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Sea
21°
Swim
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21°
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21°
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20°
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23°
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26°
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28°
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Sea
29°
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28°
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26°
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23°
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22°
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The annual average maximum daily temperature is 24.1°C (75.3°F) which is warm and makes sunbathing pleasant on clear days. The annual average water temperature is typically 24.0°C (75.2°F) which is warm and pleasant for relaxing and swimming for long periods. Annually there are on average 9.1 days of rain per month and 6.9 hours of sun per day.
The best months to visit Charleston are June, July, August, September, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.
The weather is perfect for sunbathing in the months from May to September when the maximum temperature reaches above 26°C (72°F)
The sea is best for swimming between June and October when the sea temperature is above the average 24°C (75°F) which is warm and pleasant for relaxing and swimming for long periods.
No, you can't sunbathe in Charleston all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.
The weather is best for sunbathing in the months from May to September when the maximum temperature reaches above 26°C (72°F)
More info about the annual temperatures and sunshine.
Yes, you can swim in Charleston all year round.
The warmest sea water temperatures in Charleston are found in August when they peak at 29°C (83°F) and lowest in April when they dip to 20°C (69°F).
The sea temperature is above average for swimming between June and October when the sea temperature is above 24°C (75°F) which is warm and pleasant for relaxing and swimming for long periods.
For perfect swimming and lounging all day, try the months from June to September when the sea temperature is above 26°C (79°F)
More info about the annual sea temperatures
The hottest month in Charleston is July when the average maximum temperature is very hot and perfect for sunbathing on clear days 32°C (89°F), average temperature is 28°C (82°F) and average minimum temperature is 24°C (76°F).
More info about the annual temperatures and sunshine.
The coolest month in Charleston is January when the average maximum temperature is 15°C (59°F), average temperature is 10°C (49°F) and average minimum temperature is 5°C (40°F).
More info about the annual temperatures and sunshine
The driest month in Charleston is March with 7.8cm (3.1inches) of rain and October has the fewest days of rain with 6.8 days with some rain, a quite rainy time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in Charleston are found in April when they dip to 20°C (69°F) which is comfortable for swimming though some may prefer warmer water.
More info about the annual sea temperatures.
The warmest sea water temperatures in Charleston are found in August when they peak at 29°C (83°F) which is very warm and ideal for relaxing and swimming for the whole day.
More info about the annual sea temperatures.
The most humid month in Charleston is August with a dew point (an indicator of humidity) of 26°C (78°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.
More info about the annual humidity.
The least humid month in Charleston is January with a dew point of 8°C (46°F) which is a bit dry for some.
More info about the annual humidity.
The most windy month in Charleston is April when the average maximum windspeed is 27KM/H (17MPH) and the average wind speed is 12KM/H (7MPH).
More info about the annual wind conditions.
The hottest month in Charleston is July when the average maximum temperature is 32°C (89°F), average temperature is 28°C (82°F) and average minimum temperature is 24°C (76°F).
The coolest month in Charleston is January when the average maximum temperature is 15°C (15°F), average temperature is 10°C (49°F) and average minimum temperature is 5°C (40°F).
The longest days in Charleston are in June, with an average of 14.3 hours of daylight per day. December has the shortest days with an average of 10 hours of daylight per day.
The sunniest days in Charleston are in August which has the most hours of sunshine per day. The sunshine percentage is 73% making it sunny and pleasant most of the time. The hours of sunshine per day are 9.8hrs making the days long and bright.
March has the least sunshine. The sunshine percentage is 33% making it very cloudy and overcast with some periods of sunshine. There are 3.9 hours of sunshine per day.
The ultraviolet index is the highest in July when it reaches 11.1 and lowest in December when it reaches 3.1.
An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. 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.
The warmest sea water temperatures in Charleston are found in August when they peak at 29°C (83°F) and lowest in April when they dip to 20°C (69°F).
The sea is best for swimming between June and October when the temperature is above 24°C (75°F) which is warm and pleasant for relaxing and swimming for long periods.
The wettest month in Charleston is August with 15.7cm (6.2inches) of rain and the most days of rain with 10.8 days with some rain, a pretty wet time to visit the beach.
The driest month in Charleston is March with 7.8cm (3.1inches) of rain and October has the fewest days of rain with 6.8 days with some rain, a quite rainy time to visit the beach.
The most humid month in Charleston is August with a dew point (an indicator of humidity) of 26°C (78°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.
The least humid month in Charleston is January with a dew point of 8°C (46°F) which is a bit dry for some.
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.
