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September 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.
September has average maximum temperatures of 17°C (63°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 41.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. September has total rainfall of 0.4cm (0.2inches) making it mostly dry with very rare light showers although there are 15.2 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 cold 16°C (61°F). September is too cold for swimming in Cornwall for any length of time, unless you have a wetsuit.
Also consider visiting Cornwall in one of the other best months of June, July, August, for the best beach weather.
Also consider one of our other suggestions for September.
No, September is not a good time for sunbathing in Cornwall.
September has average maximum temperatures of 17°C (63°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 41.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. September has total rainfall of 0.4cm (0.2inches) making it mostly dry with very rare light showers although there are 15.2 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 September temperature and sunshine.
No, September is too cold for swimming in Cornwall for any length of time, with the sea water at 16°C (61°F), unless you have a wetsuit.
More about September sea temperatures.
Yes, September is a slightly cool time for a holiday in Cornwall.
September has average maximum temperatures of 17°C (63°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 41.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. September has total rainfall of 0.4cm (0.2inches) making it mostly dry with very rare light showers although there are 15.2 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 cold 16°C (61°F). September is too cold for swimming in Cornwall for any length of time, unless you have a wetsuit.
More about the September temperatures and sunshine.
No, Cornwall is not that warm but sunbathing may be possible on some clear days in September.
The average maximum temperature in Cornwall in September is 17°C (63°F). The average maximum temperature is 18°C (65°) in the previous month and 15°C (59°F) in the next month.
The average temperature in Cornwall in September is 14°C (58°F). The average temperature is 16°C (60°F) in the previous month and 12°C (54°F) in the next month.
More info about the September temperatures and sunshine.
The average day light hours per day in Cornwall in September are 12.6. The sunshine percentage is 41.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.
More about September sunshine.
The average maximum temperature in Cornwall in September is 17°C (63°F). The average maximum temperature is 18°C (65°F) in the previous month and 15°C (59°F) in the next month.
The average temperature in Cornwall in September is 14°C (58°F). The average temperature is 16°C (60°F) in the previous month and 12°C (54°F) in the next month.
The average minimum temperature in Cornwall in September is 12°C (53°F). The minimum temperature is 13°C (56°F) in the previous month and 10°C (50°F) in the next month.
During September the average day light hours are 12.6 per day in Cornwall. The sunshine percentage is 41.4% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.
The ultraviolet index in Cornwall in September is typically 4.4 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive 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, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Cornwall in September is 16.3°C (61.3°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.
The average total rainfall in Cornwall in September is 0.4cm (0.2inches) and on average there are 15.2 rainy days in September making it a wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Cornwall in September is 14°C (58°F) which is comfortable for everyone. The dew point is 15°C (59°F) in the previous month and 13°C (13°F) in the next month.
The average maximum relative humidity in Cornwall in September is typically 96.9%. The maximum relative humidity is 97.6% in the previous month and 97.2% in the next month.
The average relative humidity in Cornwall in September is typically 86.4%. The average relative humidity is 86.4% in the previous month and 87.2% in the next month.
The average maximum wind speed in Cornwall in September is typically 27KM/H (17MPH). The average maximum wind speed is 26KM/H (16MPH) in the previous month and 30KM/H (19MPH) in the next month.
The average wind speed in Cornwall in September is typically 17KM/H (11MPH). The average wind speed is 16KM/H (10MPH) in the previous month and 20KM/H (12MPH) in the next month.
The average wind direction in Cornwall in September is from the West.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
