Average climate of Cornwall
The climate of Cornwall has an average yearly temperature of 15°C. Throughout the year, the average monthly temperature can drop to 10°C and rise to 19°C.
Annually, about 1158 mm of rain falls. This gives a good overview of how much rain to expect in Cornwall. Additionally, about 1,1 cm of snow falls each year.
The best time to visit Cornwall is June and September. During this period, you will experience pleasant temperatures and not too much rain, making it ideal to visit Cornwall.
10 to 19°C
1158 mm
1,1 cm
Table of contents
- Average yearly temperature: 15°C
- Highest temperature: 19°C in July and August
- Lowest temperature: 10°C in January and February
- Precipitation: 1158 mm per year, averaging 97 mm per month
- Driest months: 57 mm in April, 65 mm in May and June
- Wettest months: 133 mm in November, 132 mm in December and 127 mm in January
- Snowfall: 1,1 cm per year
Climate table Cornwall
The climate table for Cornwall shows the average temperatures, precipitation, snowfall, and UV index per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daytime temperature (°C) | 10 | 10 | 11 | 13 | 15 | 18 | 19 | 19 | 18 | 15 | 12 | 11 |
| Nighttime temperature (°C) | 6 | 5 | 6 | 7 | 9 | 12 | 14 | 14 | 13 | 11 | 8 | 7 |
| Precipitation (mm) | 127 | 93 | 88 | 57 | 65 | 65 | 102 | 107 | 84 | 105 | 133 | 132 |
| Snowfall (cm) | 0,1 | 0,4 | 0,5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,1 | 0 |
| UV Index | 2 | 2 | 3 | 6 | 7 | 6 | 6 | 5 | 4 | 3 | 2 | 1 |
| Best month |  |
|
|
|
|
 |
|
|
|
|
|
|
Temperature per month in Cornwall
This graph shows the average high temperatures in degrees Celsius for each month in Cornwall, England
Precipitation per month in Cornwall
This graph shows the average monthly precipitation in millimeters in Cornwall, England.
Snowfall per month in Cornwall
This graph shows the average snowfall in centimeters per month in Cornwall, England.
UV index per month in Cornwall
This graph shows the average UV index per month in Cornwall, England.
Yearly temperature in Cornwall
This graph shows the average yearly temperature in Cornwall, England, measured in degrees Celsius.
Yearly total precipitation in Cornwall
This graph shows the average yearly precipitation in millimeters in Cornwall, England.
Yearly snowfall in Cornwall
This graph shows the average yearly snowfall in Cornwall, England, measured in centimeters.
Weather experiences in Cornwall
Write your own reviewHave you ever been to Cornwall?
Share your weather experiences in Cornwall.
Average weather in Cornwall per month
Click on a month below to see in detail how the weather typically is in Cornwall and what to expect. Based on the historical weather data of Cornwall, you can view the average temperature, precipitation, wind, and UV index for each day of the month.