Normal weather in Cornwall in August
The weather in Cornwall in August has an average temperature of around 19°C during the day. On average, August sees 114 mm of rain in Cornwall. The wind speed is 4 Beaufort and mainly comes from Southwest.
After July, August in Cornwall starts with a temperature of 19°C and ends around September at 18°C.
August averages for Cornwall
![]() | 19°C |
![]() | 20°C |
![]() | 18°C |
![]() | 114 mm |
![]() | 14 days |
Temperature per day in August in Cornwall
This graph shows the average daily maximum temperatures in August in Cornwall, indicated in degrees Celsius.
Precipitation per day in August in Cornwall
This graph shows the average daily precipitation in August in Cornwall, indicated in millimeters.
UV index per day in August in Cornwall
This graph shows the average daily UV index in August in Cornwall.
Yearly temperature in August in Cornwall
This graph shows the average yearly temperature in August in Cornwall, measured in degrees Celsius, over the past years.
Yearly total precipitation in August in Cornwall
This graph shows the average yearly precipitation in millimeters in August in Cornwall, over the past years.
Average daily weather in August
Click on a day to get more information about the average weather on that day.
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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.