Weather in Charleston County, United States in December

So you're interested in going to Charleston County, United States in December

December is a cold and slightly rainy time for sunbathing in Charleston County and not really recommended. December is a good month for swimming in Charleston County with warm sea temperatures. Consider visiting Charleston County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for December.

Temperature in Charleston County in December

The average maximum temperature in Charleston County in December is 16°. The average maximum temperature is 20° in the previous month and 15° in the next month.

The average temperature in Charleston County in December is 12°. The average temperature ranges is 14° in the previous month and 10° in the next month.

The average minimum temperature in Charleston County in December is . The minimum temperature is in the previous month and in the next month.

Sunshine in Charleston County in December

The average day light hours per day in Charleston County in December are 10 and there are 6.5 hours of sunshine per day on average during December making it a quite sunny month with some cloud cover.

The ultraviolet index in Charleston County in December is typically 3.2 during December. 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.

Sea Temperature in Charleston County in December

The average sea water temperature in Charleston County in December is 22.3° which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in Charleston County in December

The average total rainfall in Charleston County in December is 28.9cm and on average there are 9.6 rainy days in December making it a slightly wet time to visit the beach.

Humidity in Charleston County in December

The maximum dew point (an indicator of humidity) in Charleston County in December is 11° which is very comfortable. The dew point is 13° in the previous month and in the next month.

The average maximum relative humidity in Charleston County in December is typically 93.6%. The maximum relative humidity is 94.4% in the previous month and 90.1% in the next month.

The average relative humidity in Charleston County in December is typically 76.6%. The average relative humidity is 75.7% in the previous month and 71.3% in the next month.

Wind Speed in Charleston County in December

The average maximum wind speed in Charleston County in December is typically 21kmh. The average maximum wind speed is 22kmh in the previous month and 23kmh in the next month.

The average wind speed in Charleston County in December is typically 9kmh. The average wind speed is 10kmh in the previous month and 10kmh in the next month.

The average wind direction in Charleston County in December is from the North-Northwest.

Monthly Averages

Suggested Beaches in December

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