Cornwall Weather Forecast
Cornwall weather: 53°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Cornwall weather in March
Weather map for Cornwall
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Climate in Cornwall month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 47° | 39° | 6,5 in | ★★☆☆☆ |
| February | 51° | 43° | 6,6 in | ★★☆☆☆ |
| March | 52° | 42° | 4,2 in | ★★★☆☆ |
| April | 56° | 45° | 4,1 in | ★★★☆☆ |
| May | 61° | 50° | 2,9 in | ★★★★☆ |
| June | 64° | 55° | 3,0 in | ★★★★☆ |
| July | 69° | 57° | 2,4 in | ★★★★☆ |
| August | 67° | 57° | 2,4 in | ★★★★☆ |
| September | 64° | 53° | 5,2 in | ★★★★☆ |
| October | 59° | 51° | 4,6 in | ★★★☆☆ |
| November | 53° | 46° | 6,0 in | ★★★☆☆ |
| December | 51° | 44° | 5,7 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit Cornwall
Go in May, June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- A packable rain shell - 5 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
How Cornwall compares with nearby places
Annual averages, and the difference against Cornwall.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Devon | 74 mi | 53°F | about the same | 44 in |
| Somerset | 110 mi | 54°F | about the same | 37 in |
| South Wales | 117 mi | 53°F | about the same | 55 in |
| Cardiff | 117 mi | 53°F | about the same | 55 in |
| Dorset | 124 mi | 53°F | about the same | 48 in |
See the Cornwall forecast by time range
Cornwall weather - more answers
Explore Cornwall
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Cornwall?
Cornwall is a county in England. Its coordinates are 50.266, -5.0527. It lies in Europe.
What is the weather like in Cornwall right now?
It is currently 53°F (12°C) with mainly clear. Humidity is 88% and wind is 3 mph.
When is the best time to visit Cornwall?
May, June, July and August offer the most comfortable conditions in Cornwall, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Cornwall in?
Cornwall observes Europe/London (UTC+01:00). The local time is 2:14 PM.
How many people live in Cornwall?
Cornwall has a population of approximately 570.000.
What is the nearest airport to Cornwall?
The closest airports are London Heathrow Airport (LHR), 217 mi away, London Gatwick Airport (LGW), 222 mi away and Dublin Airport (DUB), 224 mi away.
What are the top things to do in Cornwall?
Popular options include Stonehenge, Stonehenge, Avebury and Associated Sites, Snowdonia National Park, Mont-Saint-Michel and its Bay, Mont-Saint-Michel and Big Ben and the Houses of Parliament.
What places are in Cornwall?
Cornwall covers 1 places in this atlas, including St Ives.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (uk-regions) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 2:14 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
