Cornwall Climate and Average Weather
Climate of Cornwall: average temperatures, rainfall and seasons month by month.
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).
Recent extremes in Cornwall
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
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 |
Climate by city in Cornwall
1 cities mapped in this atlas
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 this means for Cornwall
Today is about average for August. The forecast high of 67°F is in line with the 67°F typical for this month.
A 84% chance means rain is expected over most of the area. Plan indoor alternatives.
Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 52°F.
What to pack, what to skip
- Layers - the daily swing is 56°F, so mornings feel nothing like afternoons
- 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.
Summary
Cornwall is a county in England. Cornwall is a county or metropolitan area in the United Kingdom. It has a population of about 570.000.
Right now it is 53°F (11°C) in Cornwall with clear sky. It feels like 51°F. Today runs from 49°F to 67°F. Chance of precipitation is 84%. Sightseeing conditions score 7.1/10 - good conditions.
The best time to visit Cornwall is May, June, July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 69°F, while January is the coldest with lows near 39°F.
The closest major airport is London Heathrow Airport (LHR), about 217 mi away. Nearby highlights include Stonehenge, Stonehenge, Avebury and Associated Sites, Snowdonia National Park and Mont-Saint-Michel and its Bay.
In plain terms. Today is about average for August. The forecast high of 67°F is in line with the 67°F typical for this month. The best window to be outside is roughly 11 AM to 2 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Cornwall today at 8.7/10. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Cornwall
| Type | County |
|---|---|
| Region | England |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 50°15′57.6″N 5°3′9.7″W (50.266, -5.0527) |
| Population | 570.000 |
| Local time | 7:23 PM (UTC+01:00) |
| Best months | May, June, July and August |
| Climate | Temperate |
Weather map for Cornwall
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Cornwall
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 (11°C) with clear sky. Humidity is 85% 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 7:23 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 22, 2026 at 7:23 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
