Temperature in Cornwall in August

Daytime highs, nighttime lows and the warmest cities in Cornwall, the United Kingdom this August.

Cornwall, the United Kingdom, a region in the United Kingdom, experiences pleasant average maximum daytime temperatures in August, ranging from 19°C (66°F) in St Just to 21°C (70°F) in Truro. Nighttime temperatures generally drop to 14°C (57°F) in Truro and 16°C (61°F) in St Just. The month of August is in the summer season. On average, August is the month with the highest temperature of the year in Cornwall, the United Kingdom.

What is the temperature of the different cities in Cornwall, the United Kingdom in August?

Find the average daytime temperatures in August for the most popular destinations in Cornwall on the map below. Click on a destination dot for more detailed information.

Select a Month

Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Cornwall, check out our Cornwall's climate page.

See also: Cornwall weather by month.

Best Places to Visit in Cornwall in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Cornwall.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in August: blue is cold, red is hot.

See all August weather averages, cities and regions in Cornwall

Cornwall temperatures in August: frequently asked questions

How hot does it get in Cornwall, the United Kingdom in August?

Daytime temperatures in Newquay typically peak at 20°C (68°F) in August, putting it in the pleasant range.

How cold does it get at night in Cornwall, the United Kingdom in August?

After dark, Newquay cools to about 14°C (57°F) on an average August night.

What is the warmest city in August in Cornwall, the United Kingdom?

Truro tops the warmest city list in our database with average maximum daytime temperatures around 21°C (70°F) and a minimum nighttime temperature of around 14°C (57°F).

What is the coldest city in August in Cornwall, the United Kingdom?

The coldest city in August in Cornwall, the United Kingdom is St Just when we check our database. The maximum daytime temperatures are around 19°C (66°F) and minimum nighttime temperatures fall around 16°C (61°F).

How much sun does Cornwall, the United Kingdom get in August?

Newquay usually sees around 202 hours of sunlight, indicating many sunny days.

Interested in more climate information?

We have much more information about the climate in Cornwall.

Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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