Temperatures in August
It's warm in August in Cornwall with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 29°C. At night, you can expect temperatures between 16°C and 19°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Cornwall in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in Cornwall with hot temperatures, averaging around 29°C during the day and nights close to 19°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-August
By mid-August, the average daytime temperature drops to around 28°C, with nights close to 19°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of August
By the end of August, the average daytime temperature in Cornwall will be around 28°C, with nights close to 18°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
Precipitation in August
In August, there is an average of 89 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
The average precipitation chance is 31% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for Cornwall. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Cornwall in August |
London | ||
|---|---|---|---|
 Average Temperature |
28°C | 22°C | |
 High Temp |
29°C | 24°C | |
| Low Temp |
26°C | 19°C | |
 Total Precipitation |
89 mm | 60 mm | |
| Rainy Days |
10 days | 10 days | |
July
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Cornwall?
Want nice weather? Then August is a great time to be in Cornwall. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Cornwall in August
With 35°C, Cornwall hit the highest temperature in the last 10 years in August 2016. The lowest daytime temperature in this month was 18°C in 2017. The extreme night temperatures ranged from a low of 10°C to a high of 26°C.
Check out the climate of Cornwall for all months and discover the best travel time
Daily Temperature in August in Cornwall
This chart shows the average daily temperatures, both day and night, for each day in August in Cornwall, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Cornwall
The chart below shows the average daily precipitation in August for Cornwall, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 10 days of rain in Cornwall.
Daily UV Index in August in Cornwall
This chart shows the average daily UV index in August in Cornwall, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Cornwall Over the Years
This chart shows the average temperature in August in Cornwall, measured in degrees Celsius, over the past years.
Total Precipitation in August in Cornwall Over the Years
This chart shows the average precipitation in August in Cornwall, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Cornwall
Click on a specific day in August for detailed info on the typical weather on that day in Cornwall. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Cornwall
Have you been to Cornwall in August?
Share your weather experience in August in Cornwall.
Average Weather in Cornwall by Month
Click on a month below to see detailed weather info for Cornwall. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
