Weather in Cornwall, United Kingdom in August

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Visiting Cornwall, United Kingdom in August

August is one of the best months to visit Cornwall for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

August has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 46.3% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day. August has total rainfall of 1.3cm (0.5inches) making it mostly dry with very rare light showers although there are 17 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much. Sea temperatures are a chilly 17°C (63°F). August is a little too cold to enjoy swimming in Cornwall for prolonged periods of time.

Also consider visiting Cornwall in one of the other best months of June, July, September, for the best beach weather.

Also consider one of our other suggestions for August.

Can you sunbathe in Cornwall in August?

No, August is not a good time for sunbathing in Cornwall.

August has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 46.3% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day. August has total rainfall of 1.3cm (0.5inches) making it mostly dry with very rare light showers although there are 17 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much.

More about August temperature and sunshine.

Can you swim in Cornwall in August?

Probably not, August is a little too cold to enjoy swimming in Cornwall for prolonged periods of time with the sea water at 17°C (63°F).

More about August sea temperatures.

Is August a good time to holiday in Cornwall?

Yes, August is a good time for a holiday in Cornwall.

August has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 46.3% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day. August has total rainfall of 1.3cm (0.5inches) making it mostly dry with very rare light showers although there are 17 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much. Sea temperatures are a chilly 17°C (63°F). August is a little too cold to enjoy swimming in Cornwall for prolonged periods of time.

More about the August temperatures and sunshine.

Is Cornwall warm in August?

Yes, Cornwall is not that warm but sunbathing may be possible on some clear days in August.

The average maximum temperature in Cornwall in August is 18°C (65°F). The average maximum temperature is 19°C (65°) in the previous month and 17°C (63°F) in the next month.

The average temperature in Cornwall in August is 16°C (60°F). The average temperature is 16°C (60°F) in the previous month and 14°C (58°F) in the next month.

More info about the August temperatures and sunshine.

How sunny is Cornwall in August?

The average day light hours per day in Cornwall in August are 14.5. The sunshine percentage is 46.3% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day.

More about August sunshine.

Temperature in Cornwall in August

The average maximum temperature in Cornwall in August is 18°C (65°F). The average maximum temperature is 19°C (65°F) in the previous month and 17°C (63°F) in the next month.

The average temperature in Cornwall in August is 16°C (60°F). The average temperature is 16°C (60°F) in the previous month and 14°C (58°F) in the next month.

The average minimum temperature in Cornwall in August is 13°C (56°F). The minimum temperature is 13°C (56°F) in the previous month and 12°C (53°F) in the next month.

Sunshine in Cornwall in August

During August the average day light hours are 14.5 per day in Cornwall. The sunshine percentage is 46.3% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day.

The ultraviolet index in Cornwall in August is typically 6.6 during August. An ultraviolet index reading of 6 to 7 indicates a high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 20 minutes. Protection against skin and eye damage is needed. Tanning will be safest before 10am and after 4pm. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Cornwall in August

The average sea water temperature in Cornwall in August is 17.1°C (62.8°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Rainfall in Cornwall in August

The average total rainfall in Cornwall in August is 1.3cm (0.5inches) and on average there are 17 rainy days in August making it a wet time to visit the beach.

Humidity in Cornwall in August

The maximum dew point (an indicator of humidity) in Cornwall in August is 15°C (59°F) which is comfortable for everyone. The dew point is 15°C (59°F) in the previous month and 14°C (14°F) in the next month.

The average maximum relative humidity in Cornwall in August is typically 97.6%. The maximum relative humidity is 97.4% in the previous month and 96.9% in the next month.

The average relative humidity in Cornwall in August is typically 86.4%. The average relative humidity is 85.6% in the previous month and 86.4% in the next month.

Wind Speed in Cornwall in August

The average maximum wind speed in Cornwall in August is typically 26KM/H (16MPH). The average maximum wind speed is 26KM/H (16MPH) in the previous month and 27KM/H (17MPH) in the next month.

The average wind speed in Cornwall in August is typically 16KM/H (10MPH). The average wind speed is 16KM/H (10MPH) in the previous month and 17KM/H (11MPH) in the next month.

The average wind direction in Cornwall in August is from the West.

Monthly Averages

Suggested Beaches in August

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.