WEATHERDUCK

The UK outdoor forecast

Find the best time
for your adventure.

UK outdoor weather forecasts, including cloud inversions, stargazing and ground conditions.

Free forecasts · any UK location

A cloud inversion seen from Skiddaw, with a sea of cloud filling the valleys below sunlit fell tops
Cloud inversion from Skiddaw, Lake District. The kind of morning WeatherDuck is built to help you catch.

Cloud inversion outlook

See when the valleys fill with cloud.

Our inversion forecast combines five weather factors and how long favourable conditions are expected to last. Explore the outlook for valleys across Britain.

UnlikelyThe profile isn't there. Have a lie-in.
PossibleWorth a look if you're local and early.
LikelySet the alarm. Good odds above the cloud.
Very likelyDrive further than you normally would.

The 24-hour cloud inversion outlook is free, with no account needed. A free account adds one email alert. Premium includes a two-day cloud inversion outlook and up to 10 alerts.

What WeatherDuck does

Built for planning, not just checking.

Find the best hours to get outside and know what to expect when you get there.

  • Your best hours

    Wind, gusts, rain and cloud in one hourly score, from 0–10.

  • Cloud inversions

    See which UK valleys may fill with cloud and find the best viewing window.

  • Night sky

    Check stargazing conditions, darkness and moonlight before heading out.

  • Ground & gear

    See ground conditions from recent rainfall and what to pack for your plans.

The activity score

Pick the window, not just the day.

A day is rarely all good or all bad. WeatherDuck scores every hour from 0 to 10 — wind weighted hardest, then rain, then cloud — so you can see the three good hours hiding inside an average-looking day.

A typical Tuesday

Example
5.106
7.208
8.410
8.112
6.814
3.416

Same day, same place — but a 5-point swing between 10am and 4pm. That gap is the whole point.

Also included

Everything either side of the walk.

The hours after sunset, and the state of the ground when you get there.

Stay out after sunset

Cloud, moonlight and genuinely useful darkness — plus the wider night-sky outlook before you commit to a late one.

Ground and gear

Check rainfall from nearby Environment Agency, SEPA and Natural Resources Wales stations, plus clothing guidance. Rain gauges and rainfall history are public; ground dryness is available with a free account.

One page, four views

The detail is there when you want it.

Search once. Everything below sits behind a tab on the same page — no hopping between sites, no re-entering where you’re going.

Forecast

Hour by hour — wind, gusts, rain, cloud, visibility.

Cloud Inversion

Valley cloud likelihood for each night and dawn.

Stargazing

Darkness, moon and cloud for the night ahead.

Ground

Rainfall, dryness and the gear to match the day.

Pricing

Start free. Upgrade if it earns it.

The forecast, the score and a 24-hour inversion outlook cost nothing. Premium is for people who plan further ahead.

Free

£0

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Premium Monthly

£2.99/month

Premium Annual

£24.99/year

Cancel any time, with access to the end of the paid period. 14-day cooling-off on new subscriptions and annual renewals.

Where are you heading?

Find the best time for your adventure.

Search any UK location — the forecast, the score and tonight’s inversion outlook are free.