January is a very cold and slightly rainy time for sunbathing in Charleston County, and not recommended. January 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 January.
The average maximum temperature in Charleston County in January is 15°. The average maximum temperature is 16° in the previous month and 16° in the next month.
The average temperature in Charleston County in January is 9°. The average temperature ranges is 11° in the previous month and 11° in the next month.
The average minimum temperature in Charleston County in January is 4°. The minimum temperature is 7° in the previous month and 6° in the next month.
The average day light hours per day in Charleston County in January are 10.2 and there are 6.2 hours of sunshine per day on average during January making it a quite sunny month with some cloud cover.
The ultraviolet index in Charleston County in January is typically 3.5 during January. 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 Charleston County in January is 21.5° which is comfortable for swimming though some may prefer warmer water.
The average total rainfall in Charleston County in January is 27.4cm and on average there are 9.6 rainy days in January making it a slightly wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Charleston County in January is 8° which is a bit dry for some. The dew point is 11° in the previous month and 9° in the next month.
The average maximum relative humidity in Charleston County in January is typically 89.6%. The maximum relative humidity is 93.1% in the previous month and 91.3% in the next month.
The average relative humidity in Charleston County in January is typically 70.8%. The average relative humidity is 76.1% in the previous month and 72.1% in the next month.
The average maximum wind speed in Charleston County in January is typically 24kmh. The average maximum wind speed is 22kmh in the previous month and 26kmh in the next month.
The average wind speed in Charleston County in January is typically 10kmh. The average wind speed is 10kmh in the previous month and 11kmh in the next month.
The average wind direction in Charleston County in January is from the West-Northwest.
