Active location

Helvellyn, Cumbria

54.53°N, 3.02°W · ~900m · 06:26 – 19:53

Updated 12:28

Temp

8°C

→ steady / 1hr

Wind

13.6

↓ 2.0 / 1hr

Condition

Overcast

Score

4.4

Fair


Time
Condition
Precip mm
Precip %
Temp & Wind
Temp °C
Feels °C
Direction
Wind mph
Gust mph
Detail
Humidity %
Pressure
Vis km
UV Index
CAPE J/kg
Score

Sat 5 Sep												Sun 6 Sep																								Mon 7 Sep																								Tue 8 Sep																								Wed 9 Sep																								Thu 10 Sep																								Fri 11 Sep																								Sat 12 Sep
12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00	00:00

-	0.2	0.1	-	-	-	-	0.2	0.1	-	-	-	-	-	-	-	-	-	-	-	-	0.1	0.2	0.2	-	-	-	-	-	-	-	-	-	-	0.6	0.7	0.9	0.9	0.9	0.6	-	-	0.2	-	-	-	-	-	-	-	1.2	1.2	1.2	0.9	0.9	0.9	-	-	-	0.1	0.1	0.1	0.4	0.4	0.4	0.1	0.1	0.1	0.3	0.3	0.3	1	1	1	0.3	0.3	0.3	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.1	0.1	0.1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.1	0.1	0.1	-	-	-	-	-	-	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	-	-	-	-	-
55%	100%	90%	25%	30%	25%	25%	100%	100%	35%	35%	25%	30%	25%	30%	25%	35%	35%	35%	30%	25%	90%	100%	100%	50%	30%	35%	25%	10%	20%	20%	30%	35%	65%	95%	95%	95%	95%	95%	95%	65%	55%	95%	55%	30%	25%	25%	15%	5%	35%	75%	90%	100%	90%	75%	70%	35%	0%	0%	55%	65%	65%	65%	70%	75%	75%	70%	65%	70%	75%	85%	100%	100%	100%	65%	65%	55%	10%	10%	15%	10%	0%	0%	5%	10%	15%	10%	10%	10%	10%	15%	10%	5%	0%	10%	65%	70%	80%	25%	15%	15%	15%	15%	10%	15%	15%	20%	25%	25%	30%	35%	35%	35%	35%	35%	35%	25%	15%	10%	10%	20%	25%	75%	65%	70%	15%	10%	0%	15%	25%	30%	70%	75%	75%	85%	85%	85%	85%	85%	85%	85%	85%	85%	85%	85%	80%	80%	70%	70%	70%	70%	70%	25%	25%	25%	30%	35%

8°	8°	9°	9°	9°	9°	9°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	8°	9°	10°	10°	11°	11°	12°	13°	13°	13°	12°	12°	12°	12°	12°	12°	12°	11°	9°	9°	9°	9°	8°	8°	8°	8°	9°	10°	10°	10°	10°	9°	9°	8°	8°	8°	7°	7°	7°	7°	7°	7°	7°	6°	6°	6°	6°	6°	6°	7°	7°	7°	7°	7°	8°	9°	8°	8°	7°	7°	7°	6°	6°	6°	5°	5°	5°	5°	5°	4°	5°	5°	6°	7°	8°	9°	9°	9°	9°	9°	9°	8°	8°	7°	5°	5°	5°	5°	5°	5°	5°	4°	5°	5°	6°	6°	7°	8°	9°	10°	11°	11°	11°	10°	10°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	9°	9°	9°	8°	8°	7°
4°	4°	4°	4°	5°	5°	6°	5°	5°	5°	5°	5°	5°	5°	5°	4°	4°	4°	4°	4°	4°	4°	5°	6°	5°	6°	7°	8°	9°	8°	8°	8°	8°	8°	9°	8°	9°	9°	9°	6°	6°	6°	5°	4°	4°	4°	4°	4°	4°	5°	5°	5°	4°	4°	3°	3°	2°	2°	2°	2°	2°	2°	2°	2°	1°	1°	1°	1°	1°	1°	1°	2°	2°	3°	3°	3°	3°	3°	3°	3°	2°	2°	1°	1°	1°	0°	0°	0°	0°	0°	0°	0°	1°	2°	3°	4°	4°	5°	5°	5°	5°	4°	4°	4°	3°	2°	2°	2°	2°	3°	2°	2°	2°	2°	3°	3°	4°	5°	6°	6°	7°	8°	8°	7°	7°	7°	6°	6°	6°	6°	6°	5°	5°	5°	6°	6°	7°	7°	8°	8°	8°	8°	7°	7°	7°	7°	7°	7°	7°	7°	7°	7°	7°	6°	6°	6°	6°
W	W	W	W	W	W	WSW	WSW	WSW	SW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	S	S	S	S	SSW	S	S	S	S	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SW	SW	SW	W	W	W	W	WSW	WSW	WSW	SW	WSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	W	W	W	W	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	W	W	W	WSW	WSW	WSW	WSW	WSW	SW	SW	SSW	SSW	SSW	S	S	S	S	SSW	SSW	SSW	SSW	SSW	SSW	SSW	S	S	S	S	S	S	S	S	SSW	SSW	SW	SW	WSW	W	W	W	W	W	W	W	W	W	W	W	W	W	W	WSW	WSW	SW	SW
14	12	17	16	13	12	11	10	9	8	7	9	11	11	11	13	14	14	16	15	15	17	16	16	19	18	17	18	20	19	19	19	19	15	15	18	17	15	14	11	8	9	12	12	13	14	17	17	18	19	20	19	19	18	17	17	17	18	18	18	17	16	16	16	16	16	16	16	16	16	16	15	14	13	14	16	18	17	16	15	15	15	15	15	15	15	14	13	12	11	11	11	11	12	13	13	13	13	13	13	13	13	12	11	9	7	6	5	5	6	6	5	5	4	4	4	4	5	6	8	9	10	10	11	11	10	9	9	9	9	10	13	13	14	13	13	12	11	10	9	9	10	11	11	12	12	12	11	10	10	9	8	7	6	5	4	3
28	24	33	32	25	23	21	20	18	17	15	21	23	24	25	28	30	30	33	33	34	36	34	34	39	37	36	38	41	40	40	40	39	32	32	38	35	32	28	24	19	19	25	24	27	28	33	34	34	35	35	34	33	32	32	31	32	33	33	32	30	29	29	29	29	29	29	29	29	30	29	28	25	24	26	30	32	31	29	28	28	27	27	27	27	27	25	23	21	20	19	19	20	22	23	24	24	23	24	24	24	23	21	19	15	12	9	8	9	9	8	8	7	6	6	6	8	10	12	15	17	19	19	20	20	18	16	15	15	16	17	22	23	24	24	22	21	19	17	17	17	18	19	20	21	21	21	20	19	17	16	14	12	10	8	6	4

95	99	92	87	90	87	84	99	98	96	96	97	96	97	97	96	98	99	93	91	94	98	97	99	95	93	95	88	79	83	84	88	94	98	100	100	100	100	100	99	96	99	100	99	98	94	90	85	76	70	73	83	90	91	89	87	87	86	86	85	85	85	86	89	90	90	89	88	88	88	89	90	92	91	86	80	76	78	82	85	85	84	84	85	87	89	89	89	89	89	90	89	85	81	77	77	78	77	72	65	62	65	71	77	82	87	90	90	89	88	90	92	94	94	93	91	88	85	82	79	76	75	76	78	80	81	82	84	87	91	94	91	92	93	94	94	94	94	94	94	93	93	92	90	90	89	89	89	89	89	90	90	90	90	91	91	91
917	917	917	917	918	918	918	918	918	919	918	918	918	918	918	917	916	916	916	915	915	915	915	914	913	913	913	912	912	911	911	911	911	911	910	910	910	910	910	909	909	909	909	909	909	909	909	909	909	908	908	907	906	906	905	904	904	904	903	903	903	902	902	902	901	901	901	901	901	901	901	901	901	901	901	901	902	902	902	903	903	904	904	904	905	905	905	905	905	906	906	906	907	908	909	909	910	910	910	910	910	910	910	910	909	909	908	908	909	909	908	908	908	908	908	908	909	909	910	910	911	911	911	911	910	910	910	909	909	909	908	907	907	907	906	906	906	906	906	906	907	907	908	908	909	910	910	910	911	911	912	912	912	913	913	913	913
14.2	11.4	25.3	30.5	23.7	30.1	32.4	4.4	8.3	21.5	19.9	17.8	21.6	18.4	18.5	19	12.6	6.8	18.3	17.3	11.2	7	6.4	5.2	13.4	14.4	17.2	22.9	27.1	23.8	24.1	25.5	20.7	10.9	1.4	0.1	0.1	0.1	0	9.5	30.1	18.9	1.6	14.7	18.8	27.4	32.9	30.8	29.6	27	16.1	9.2	2.4	8.2	14	19.9	19.7	19.5	19.3	17	14.7	12.3	11.6	10.9	10.2	12.1	14	15.8	12.4	9	5.6	4.9	4.1	3.4	9.3	15.2	21.2	19.2	17.2	15.2	17.5	19.8	22	21.4	20.9	20.3	20.4	20.6	20.7	20.8	20.8	20.8	21.9	23.1	24.2	20.3	16.3	12.4	16.9	21.5	26	22.1	18.2	14.3	16.3	18.2	20.2	20.6	21	21.4	20.1	18.9	17.6	15.7	13.7	11.7	14.2	16.6	19.1	17.7	16.3	14.9	17.7	20.6	23.4	23.1	22.8	22.4	18.2	14	9.8	8.8	7.8	6.8	6.8	6.8	6.9	6.9	6.9	6.9	6.9	6.9	6.8	6.8	6.8	6.8	9.1	11.3	13.6	15.8	18.1	20.3	20.2	20.1	20	19.9	19.7
0.7	1.5	2.5	1.5	0.7	0.5	0.2	-	-	-	-	-	-	-	-	-	-	-	-	-	0.1	0.2	0.6	2.1	2.8	2.8	1.9	1.5	1.3	0.5	0.2	-	-	-	-	-	-	-	-	-	-	-	-	-	0.2	0.5	1.2	1.5	2.2	2.8	2.9	2.1	1.5	1.3	0.9	0.4	-	-	-	-	-	-	-	-	-	-	-	0.3	1.1	1.6	1.8	1.7	1.9	2	3.2	3.7	3.4	2.5	1.5	0.5	-	-	-	-	-	-	-	-	-	-	-	0.3	1.2	2.1	2.8	3	2.9	2.6	2.5	2.5	2.3	1.8	1.1	0.4	-	-	-	-	-	-	-	-	-	-	-	0.1	0.8	1.7	2.7	3	2.8	2.5	2.4	2.2	1.9	1.8	1.4	0.5	-	-	-	-	-	-	-	-	-	-	-	0.1	0.7	1.2	1.7	2.1	2.3	2.4	2.5	2.6	2.4	1.9	1.2	0.4	-	-	-	-	-
50	60	50	20	20	20	20	10	10	20	10	0	0	0	0	0	0	0	0	0	0	0	0	0	0	10	10	10	10	0	0	0	0	0	0	10	30	30	10	0	0	10	60	50	50	30	50	50	35	28	60	110	140	120	80	40	30	20	20	10	0	0	20	40	60	50	30	20	30	40	50	50	50	50	60	80	80	60	30	10	0	0	0	0	10	10	10	0	0	0	0	0	10	40	60	100	130	150	120	80	40	30	20	20	10	10	0	0	0	0	0	0	0	0	0	0	0	10	20	60	100	130	120	80	50	30	10	0	0	0	0	0	0	0	0	0	0	0	10	10	20	30	40	60	70	70	70	60	60	50	40	30	20	20	10	10	0
3.4	4.1	2.1	2.5	4.0	5.6	6.0	5.0	5.4	5.7	6.0	6.3	4.6	4.3	4.2	3.5	3.1	3.1	2.4	2.5	2.4	1.6	2.2	2.1	1.0	1.5	1.7	1.3	0.6	0.8	0.8	0.9	1.1	2.6	2.3	0.8	1.3	2.0	2.8	3.8	5.5	5.3	3.9	4.1	3.6	3.4	2.2	2.0	3.0	2.6	1.7	2.0	1.0	1.4	1.6	2.9	3.4	3.2	3.1	3.2	3.6	3.9	3.7	3.7	3.7	4.0	4.0	4.0	3.8	3.7	2.5	2.5	3.0	3.2	4.5	3.7	3.2	3.5	3.9	4.3	4.4	4.4	4.5	4.5	4.4	4.5	4.9	5.3	5.7	6.0	6.2	6.2	6.0	5.6	5.3	5.2	5.2	4.1	4.1	4.0	5.2	5.5	5.8	6.3	6.9	7.7	7.1	7.2	7.1	7.1	7.1	7.2	7.3	7.5	8.8	8.8	8.6	8.2	7.7	7.3	6.8	5.3	5.0	4.8	4.8	6.4	6.8	7.0	7.0	6.8	6.5	5.5	5.2	3.8	3.9	4.2	4.6	5.0	5.3	5.5	5.5	5.3	5.0	4.7	4.5	4.5	4.6	5.9	6.2	6.5	6.9	7.2	7.7	8.1	8.5	10.0	8.8

Best Activity Window

WeatherDuck score

Day average: 4.4/10

Best window: 17:00-20:00 · Avg 5.5

What this shows

The selected day from 06:00 to 21:00, scored from 0-10. The top line gives the day average and strongest window; the bars show how conditions rise and fall through that activity window. WeatherDuck score — Wind up to 5 mph (matters a lot) · Rain none at all (matters a fair bit) · Sky At least Mostly cloudy (matters a fair bit).

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These factors shape your score — set a comfy range for each, and how much it matters. Add more from the tray, or remove ones you don't care about. The bars update instantly.

Wind

Comfy range up to 5 mph

How much it matters

matters a lot

Rain

Comfy range none at all

How much it matters

matters a fair bit

Sky

Comfy range At least Mostly cloudy

How much it matters

matters a fair bit

Temperature

Comfy range 0 – 25°C

How much it matters

matters a fair bit

Time of day

Comfy range any time of day

How much it matters

matters a fair bit

Comfy range any UV level

How much it matters

matters a fair bit

Wind direction

Comfy range any direction

How much it matters

matters a fair bit

Visibility

Comfy range at least 5 km

How much it matters

matters a fair bit

Not counted — tap to add

Overcast

9° / 6° · Today · Sat 5

Light showers most likely in morning, midday, and afternoon / evening. Westerly winds averaging around 16 mph with peaks near 25 mph, gusting to 51 mph. Temperatures range from 6C to 9C with largely cloudy skies.

1.5 mm

Rain total

25 mph W

Wind max

gusts 51 mph

2.5

UV max

peak 14:00

Low

Pollen

Grass

Air quality

Fair

Very low

Thunder

CAPE 60

Atmosphere

Cloud avg 94%

Freezing level 2,370 mup to 3,650 m

Fog risk Low

Sun & Moon

06:26 / 19:53

Sun ↑↓

13 h 27 m

Daylight

23:16 / 17:37

Moon ↑↓

Waning Crescent

Moon phase

39% lit

Overcast

13° / 8° · Tomorrow · Sun 6

Light showers most likely in morning. South-southwesterly winds averaging around 16 mph with peaks near 20 mph, gusting to 41 mph. Temperatures range from 8C to 13C, trending warmer later with largely cloudy skies.

1.8 mm

Rain total

20 mph SSW

Wind max

gusts 41 mph

2.8

UV max

peak 12:00

Low

Pollen

Grass

Fair

Air quality

Very low

Thunder

CAPE 10

Atmosphere

Cloud avg 98%

Freezing level 3,560 mup to 3,840 m

Fog risk Low

Sun & Moon

06:28 / 19:51

Sun ↑↓

13 h 23 m

Daylight

00:43 / 18:19

Moon ↑↓

Waning Crescent

Moon phase

29% lit

Wet and windy for much of the day

12° / 7° · Mon 7 Sep

Persistent rain most likely in midday and afternoon / evening. Southwesterly winds averaging around 16 mph with peaks near 20 mph, gusting to 35 mph. Temperatures range from 7C to 12C, turning cooler later with largely cloudy skies.

9.9 mm

Rain total

20 mph SW

Wind max

gusts 35 mph

2.9

UV max

peak 14:00

Pollen

Air quality

Very low

Thunder

CAPE 140

Atmosphere

Cloud avg 81%

Freezing level 2,300 mup to 3,800 m

Fog risk Low

Sun & Moon

06:29 / 19:48

Sun ↑↓

13 h 18 m

Daylight

-- / 18:44

Moon ↑↓

Waning Crescent

Moon phase

20% lit

Light drizzle

9° / 6° · Tue 8 Sep

Persistent rain most likely in morning, midday, and afternoon / evening. Westerly winds averaging around 16 mph with peaks near 18 mph, gusting to 32 mph. Temperatures range from 6C to 9C with a mix of sun and cloud. Watch for moderate uv in brighter breaks.

6.5 mm

Rain total

18 mph W

Wind max

gusts 32 mph

3.7

UV max

peak 15:00

Pollen

Air quality

Very low

Thunder

CAPE 80

Atmosphere

Cloud avg 50%

Freezing level --

Fog risk Low

Sun & Moon

06:31 / 19:46

Sun ↑↓

13 h 14 m

Daylight

02:18 / 19:01

Moon ↑↓

Waning Crescent

Moon phase

12% lit

Clear sky

9° / 4° · Wed 9 Sep

Patchy precipitation is possible, but coverage looks limited. West-northwesterly winds averaging around 11 mph with peaks near 15 mph, gusting to 27 mph. Temperatures range from 4C to 9C with a mix of sun and cloud. Watch for moderate uv in brighter breaks.

0.3 mm

Rain total

15 mph WNW

Wind max

gusts 27 mph

UV max

peak 11:00

Pollen

Air quality

Very low

Thunder

CAPE 150

Atmosphere

Cloud avg 50%

Freezing level --

Fog risk Low

Sun & Moon

06:33 / 19:43

Sun ↑↓

13 h 10 m

Daylight

03:54 / 19:13

Moon ↑↓

Waning Crescent

Moon phase

6% lit

Overcast

11° / 4° · Thu 10 Sep

Patchy precipitation is possible, but coverage looks limited. Southerly winds averaging around 8 mph with peaks near 13 mph, gusting to 22 mph. Temperatures range from 4C to 11C, trending warmer later with largely cloudy skies. Watch for moderate uv in brighter breaks.

0.4 mm

Rain total

13 mph S

Wind max

gusts 22 mph

UV max

peak 11:00

Pollen

Air quality

Very low

Thunder

CAPE 130

Atmosphere

Cloud avg 76%

Freezing level --

Fog risk Low

Sun & Moon

06:35 / 19:41

Sun ↑↓

13 h 5 m

Daylight

05:25 / 19:23

Moon ↑↓

Waning Crescent

Moon phase

2% lit

Light drizzle

10° / 8° · Fri 11 Sep

Spells of rain most likely in morning, midday, and afternoon / evening. Southerly winds averaging around 10 mph with peaks near 14 mph, gusting to 24 mph. Temperatures range from 8C to 10C with largely cloudy skies.

2.0 mm

Rain total

14 mph S

Wind max

gusts 24 mph

2.6

UV max

peak 15:00

Pollen

Air quality

Very low

Thunder

CAPE 70

Atmosphere

Cloud avg 83%

Freezing level --

Fog risk Low

Sun & Moon

06:37 / 19:38

Sun ↑↓

13 h 1 m

Daylight

06:53 / 19:31

Moon ↑↓

New Moon

Moon phase

0% lit

Live rain radar

LIVE

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Light Moderate Heavy

Radar data by RainViewer

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Ground conditions

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1.1 mm

Last 24 h

80.6 mm

Last 7 days

Measured at Glenridding rain gauge, 3.2 km away

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Layer	Item	Material	Why
Base	Thermal base layer	Heavyweight merino or synthetic thermal; avoid cotton	0°C feels temp
Mid	Heavy fleece	Heavy fleece or synthetic fill; not down (rain forecast)	Wind chill feels like 0°C
Outer	Windproof shell	Hardshell or softshell; wind protection is the priority today	22 mph, gusts 45 mph
Lower	Insulated trousers	Softshell or fleece-lined walking trousers	Sub-zero wind chill on exposed legs
Feet	Insulated waterproof boots	Stiff sole for frozen ground, thick socks (wool blend)	Frozen ground, ice risk
Extras	Warm hat, thick gloves, balaclava	Windproof gloves, spare pair. Consider microspikes for ice	Feels like 0°C with a risk to exposed skin

Layer up. Plan to wear the main protection from the start.

Wear from the start 5 pieces

Add before you go Weather protection

Tap an item to see why

Essential Recommended Guidance

Guidance based on the forecast, not professional safety advice. Always use your own judgement. BMC layering guide →

Inversion Outlook Lake District, Howgills & Eden Valley region

Unlikely

Saturday afternoon BEST

No clear window yet.

SAT AFTERNOON

No clear window

Unlikely

SUN MORNING

No clear window

Unlikely

Tap a period for detail

Key Factors

Temperature lid

Valley moisture

21%

Layer contrast

Summit clarity

Wind speed

Duration

No temperature inversion detected

Marginal moisture below

No moisture contrast, diffuse profile

Saturated above, no clear cap

Too windy, mixing likely

No sustained favourable window

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Example email alert

Glenridding Very likely

A Very likely inversion is about 28 km from your chosen location — tomorrow, best window 6–9am.

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Email alerts sent up to 24h ahead.

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Cloud Inversion Heatmap

Atmospheric Profile · Glenridding · 145 m

Region Anchor

Loading… Timeline

Surface Pressure

Humidity at Pressure Levels

Temperature at Pressure Levels

Golden Hour

Today

DARKNESS

DAYLIGHT

05:41

06:06

06:26 Sunrise

06:46

07:11

Golden Hour · 40 min

Be at your summit by 06:06

Allow time to set up before the light show begins.

Monthly Inversion Chance

Illustrative relative chance by season

Illustrative — typical UK pattern

~2 proper inversion days per year. Mostly late autumn to spring. Free accounts get one 24-hour alert; Premium alerts can warn you up to 48 hours ahead.

Cloud inversions explained

What is a cloud inversion near Helvellyn, Cumbria?

A cloud inversion happens when cool, moist air becomes trapped in valleys beneath warmer air above. If the trapped moisture turns into fog or low cloud, the hills can rise through it into clearer air and sunshine. From a summit, the result can look like a wide sea of cloud with only the higher peaks visible.

The best chance near Helvellyn, Cumbria is a calm, settled night with moist valley air, a warm lid above and clearer, drier air over the tops. The bands on this page, from Unlikely to Very likely, describe the strength of that overall signal rather than a percentage promise, so always check timing, estimated cloud height and wind before setting off.

How to read this page. The headline outlook covers the surrounding region. Key Factors and the Atmospheric Profile describe the nearest available atmospheric profile.

See the dedicated Helvellyn cloud inversion page Read the full UK cloud inversion guide See how WeatherDuck forecasts inversions

Common questions

When are cloud inversions most likely near Helvellyn?

Late October to early March, most often in the hours around dawn. They need a long, calm, clear night so cold air can pool in the valleys, which is why they are rare in summer.

How high do you need to climb to get above the cloud?

It depends on the cloud top, which most often sits between 200m and 800m. This page estimates the cloud top for each night, so check it against the height of the summit you have in mind.

How far ahead can a cloud inversion be forecast?

The signal usually firms up inside 48 hours. Beyond that the outlook tells you whether the pattern looks favourable rather than giving a firm call.

Does a Likely band mean an inversion is guaranteed?

No. The bands describe how strongly the ingredients line up, not a percentage chance, so always check the timing, estimated cloud height and wind before setting off.

Tonight's Stargazing

Very poor conditions Skies look closed in — best to wait it out.

Moon Waning Crescent 34%

Cloud Cover Overcast 93%

Moon Times Set 17:37 · Rise 23:16

Sky Clarity 17 km Clear

Lunar Day Day 23.6

Light Pollution View map ↓

Tonight's Aurora

Aurora & Solar Wind NOAA

3.0 Planetary Kp No Data

Solar wind data unavailable right now.

Nightly Outlook

Swipe or tap a day · cream arc = moon altitude · red dotted = horizon · orange = sun · green band = best stargazing window

Tonight

Waning Crescent · 34% illuminated

6 out of 100

60° 30° 0°

▲Moonrise 23:16

☀ Sunset 19:53

☀ Sunrise 06:28

182022000204060810

Cloud cover92% avg

100

Moonrise23:16

MoonsetPast dawn

Peak alt62° @ 09:00

Lunar day23.6

Sun

Waning Crescent · 25% illuminated

1 out of 100

60° 30° 0°

▲Moonrise 00:43

▼Moonset 18:19

☀ Sunset 19:51

☀ Sunrise 06:29

182022000204060810

Cloud cover99% avg

100

Moonrise00:43

Moonset18:19

Peak alt59° @ 10:00

Lunar day24.6

Mon

Waning Crescent · 16% illuminated

53 out of 100

60° 30° 0°

▲Moonrise 02:18

▼Moonset 18:44

☀ Sunset 19:48

☀ Sunrise 06:31

182022000204060810

Cloud cover50% avg

Moonrise02:18

Moonset18:44

Peak alt53° @ 10:00

Lunar day25.6

Tue

Waning Crescent · 9% illuminated

87 out of 100

60° 30° 0°

▲Moonrise 03:54

▼Moonset 19:01

☀ Sunset 19:46

☀ Sunrise 06:33

182022000204060810

Cloud cover15% avg

Moonrise03:54

Moonset19:01

Peak alt45° @ 10:00

Lunar day26.6

Wed

Waning Crescent · 4% illuminated

8 out of 100

60° 30° 0°

▲Moonrise 05:25

▼Moonset 19:13

☀ Sunset 19:43

☀ Sunrise 06:35

182022000204060810

Cloud cover87% avg

Moonrise05:25

Moonset19:13

Peak alt34° @ 10:00

Lunar day27.6

Thu

New Moon · 1% illuminated

23 out of 100

60° 30° 0°

▲Moonrise 06:53

▼Moonset 19:23

☀ Sunset 19:41

☀ Sunrise 06:37

182022000204060810

Cloud cover73% avg

Moonrise06:53

Moonset19:23

Peak alt24° @ 10:00

Lunar day28.6

Fri

New Moon · 0% illuminated

0 out of 100

60° 30° 0°

▼Moonset 19:31

☀ Sunset 19:38

☀ Sunrise 05:38

182022000204060810

Cloud cover66% avg

MoonriseAlready up

Moonset19:31

Peak alt13° @ 10:00

Lunar day0.1

Swipe / scroll, or tap a day above

Aurora Kp · 3-Day Forecast

NOAA SWPC · 3-hourly

Higher Kp = stronger geomagnetic activity = better aurora chances. For UK observers, Kp 4+ means aurora is possible from N. Scotland; Kp 5+ brings it across the whole UK.

Today

Sat 5 Sep

Quiet

Peak Kp 2.7 at 03:00 UTC

No aurora expected — geomagnetic field calm.

9630

2.7 · 03:00

0003060912151821

Tomorrow

Sun 6 Sep

Quiet

Peak Kp 1.7 at 00:00 UTC

No aurora expected — geomagnetic field calm.

9630

1.7 · 00:00

0003060912151821

Mon 7

Mon 7 Sep

Unsettled

Peak Kp 3.7 at 12:00 UTC

Slightly unsettled — minor activity, no aurora expected.

9630

3.7 · 12:00

0003060912151821

Aurora Forecast Map

Global — OVATION Model

UK Focus

Your Night Sky

Meteor Showers

Coming up this year

Orionids Oct 21

Oct 2 – Nov 7

Fast, with persistent trains.

Leonids Nov 17

Nov 6 – Nov 30

Occasional storms. Fast, bright.

Geminids Dec 14

Dec 4 – Dec 20

Best of the year. Bright, multi-coloured.

Earlier this year

Quadrantids Jan 4

Jan 1 – Jan 6

Strong, short-lived peak. Bright fireballs.

Lyrids Apr 22

Apr 16 – Apr 25

Sparse, sometimes glowing trails.

Eta Aquariids May 6

Apr 19 – May 28

Best before dawn. Fast meteors.

Delta Aquariids Jul 30

Jul 12 – Aug 23

Steady rates, faint. Best late night.

Perseids Aug 12

Jul 17 – Aug 24

Bright, reliable. Best summer shower.

Light Pollution Map

Understanding the stargazing score

The stargazing score combines cloud cover and moon illumination to estimate how good conditions are for observing the night sky. Cloud cover is the dominant factor — even the darkest location is useless under heavy cloud.

The Bortle scale measures light pollution from 1 (pristine dark sky) to 9 (inner-city sky). In the UK, the best accessible sites reach Bortle 2 to 3, found in areas like Northumberland International Dark Sky Park, parts of the Lake District, Snowdonia, the Brecon Beacons, and the Scottish Highlands. At Bortle 3, the Milky Way is clearly visible and dozens of deep-sky objects are observable with binoculars.

Moon phase matters: A new moon (0% illumination) provides the darkest sky. A full moon floods the sky with light, washing out everything except planets and the brightest stars. The best stargazing combines a new or thin crescent moon with clear skies.

Practical tips: Give your eyes 20 to 30 minutes to dark-adapt after arriving at your spot. Avoid looking at phone screens (use a red-light torch instead). The hours after midnight are often best, as the atmosphere settles and any remaining cloud may clear.

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This uses Environment Agency rainfall data from the real-time data API (Beta). Rainfall data from the Scottish Environment Protection Agency (SEPA), licensed under the Open Government Licence v3.0. Natural Resources Wales data is licensed under the Open Government Licence v3.0. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.

Planning aid, not a safety service. Check official warnings before you go. Safety information

Weather data by Open-Meteo.com (UK Met Office Seamless) · Map data © OpenStreetMap contributors · Data sources & licences