January weather forecastFolly Beach, SC
January
Weather in January
Starting the year, Folly Beach enjoys a relatively mild weather in January. The temperatures oscillate between 46.4°F (8°C) and 57°F (13.9°C), providing the city with a gentle start. A notable feature of January is the infrequency of snowfall, with only approximately 0.2 snowfall days in the month, marking January as the start of a snowless stretch. Despite being on the cooler side, can expect a healthy dose of sunlight with a sea temperature well into the 60s°F mark. Compared to December, the sunlight hours are shorter in January while the cloud cover is slightly less.Temperature
In Folly Beach, January records the lowest average temperatures, peaking at 57°F (13.9°C) and reaching a low of 46.4°F (8°C).Humidity
January, March and October, with an average relative humidity of 73%, are the least humid months in Folly Beach.Rainfall
January is the month with the least rainfall. Rain falls for 5.7 days and accumulates 0.24" (6mm) of precipitation.Snowfall
Months with snowfall are January and December. The month with the most snowfall days is January, when snow falls for 0.2 days.Ocean temperature
In Folly Beach, South Carolina, in January, the average water temperature is 63.1°F (17.3°C).Note: Swimming in water at 63.1°F (17.3°C) is not a pleasing experience for the majority. As the temperature descends from 69.8°F (21°C) to 59°F (15°C), controlling breathing becomes increasingly hard.
Daylight
In Folly Beach, the average length of the day in January is 10h and 17min.On the first day of January, sunrise is at 7:21 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:51 pm EST.
Sunshine
The average sunshine in January in Folly Beach is 5.8h.UV index
The month with the lowest UV index is January, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 3 during January morphs into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Folly Beach, SC
- Average high temperature in January: 57°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in January: 46.4°F
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in January
Folly Beach, SC
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in January
Folly Beach, SC
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in January
Folly Beach, SC
- Average humidity in January: 73%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January, March and October (73%).
Average rainfall in January
Folly Beach, SC
- Average rainfall in January: 0.24"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in January
Folly Beach, SC
- Average rainfall days in January: 5.7 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (5.2 days).
Average snowfall days in January
Folly Beach, SC
- Average snowfall days in January: 0.2 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in January
Folly Beach, SC
- Average sea temperature in January: 63.1°F
The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (61.9°F).
Average daylight in January /
Average sunshine in January
Folly Beach, SC
- Average daylight in January: 10h and 18min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 5h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Folly Beach, SC
- Average sunshine days in January: 23.9 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in January
Folly Beach, SC
- Average UV index in January: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in January
Folly Beach, SC
- Average cloud cover in January: 34
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in January
Folly Beach, SC
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
