Climate and monthly weather forecastFolly Beach, SC
Climate and monthly weather forecast
The climate of Folly Beach
Folly Beach, South Carolina, USA, sits in the Köppen climate classification Cfa zone, identified by its humid subtropical climate with no dry season. Nestled along the eastern coast, Folly Beach experiences climatic characteristics typical of southeastern regions of the United States.Throughout the year, Folly Beach's climate exhibits dynamic shifts in temperatures. The average high fluctuates from 57°F (13.9°C) in January and February to 86.2°F (30.1°C) in July. Likewise, the average low temperatures vary from 46.4°F (8°C) in January to 78.4°F (25.8°C) between July and August. Relative humidity values largely remain consistent year-round, averaging between 73% to 78%.
Precipitation, on the other hand, witnesses a more pronounced variation throughout the year. The least monthly rainfall occurs in January at 0.24" (6mm), while August sees the maximum rainfall at 1.93" (49mm). The average number of rainfall days also peaks in August, at 17.3 days, before gradually reducing towards the end of the year.
The intensity of sunshine varies with the peak daily hours of sunlight extending from an average of 5.8 hours in January to 11 hours in July. The annual UV index varies from 3 in the winter months rising to 7 in the summer.
The Best Time to Visit Folly Beach
The best time for a visit to Folly Beach depends largely on the weather preferences of the visitor. For beach enthusiasts who enjoy basking in the sun, the summer months between June and August offer the perfect conditions. Temperatures surge to 84.2°F (29°C) to 86.2°F (30.1°C) during these months, and the beach water is delightfully warm, ranging from 79.3°F (26.3°C) to 83.5°F (28.6°C). The number of sunshine hours also peaks during these months, making it ideal for outdoor activities.The Worst Time to Visit Folly Beach
If extreme heat and heavy rainfall are a deterrent, then the period between July and August may not be the ideal time to visit Folly Beach. August records the highest rainfall at 1.93" (49mm) spread across 17.3 days, coupled with high temperatures that stay at 86°F (30°C). Moreover, the humidity level peaks to 77% during this period making it further uncomfortable.Spring Weather in Folly Beach
Spring in Folly Beach begins to warm, starting with an average high of 64.4°F (18°C) in March and rising to 78.1°F (25.6°C) in May. Simultaneously, average lows increase from 54.1°F (12.3°C) to 69.3°F (20.7°C). Rainfall averages from 0.39" (10mm) to 0.47" (12mm), spanning across 6.9 to 9.9 days. The daylight hours extend from 12 hours in March to 13.8 hours in May.Summer Weather in Folly Beach
Summer welcomes an escalation in temperature with an average high ranging from 84.2°F (29°C) in June to 86.2°F (30.1°C) in July and 86°F (30°C) in August. The average low hovers between 75.9°F (24.4°C) and 78.4°F (25.8°C). Rainfall also increases and peaks to 1.93" (49mm) in August, with an average of 17.3 rainfall days. The daylight hours remain longest during these months, averaging 14.3 hours in June and 13.3 hours by August.Autumn Weather in Folly Beach
During autumn, temperatures commence their downward curve. September records an average high of 82.6°F (28.1°C), subsequently decreasing to 75.2°F (24°C) by November. Average lows follow a similar pattern, gradually dropping from 74.3°F (23.5°C) to 55.6°F (13.1°C). Rainfall ranges from 1.3" (33mm) in September to 0.51" (13mm) by November, while the number of rainfall days reduces from 11.3 to 5.2 days.Winter Weather in Folly Beach
Winter months show a further dip in temperature with the average high transitioning from 65.8°F (18.8°C) in December to 57°F (13.9°C) in January and February. Simultaneously, average lows also decrease from 51.1°F (10.6°C) in December to 46.4°F (8°C) in January. December records the highest rainfall of the winter season at 1.14" (29mm) across 6.2 days. The sunshine hours reduce to a yearly low of 5.7 hours in December, with an average daylight duration of 10 hours throughout the winter.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. Weather in January »Weather in February
Entering February, Folly Beach sees a slight increase in temperature from January with values ranging from 48.9°F (9.4°C) to 59.5°F (15.3°C). February perpetuates the trend of zero snowfall days, highlighting the remarkable snowless nature of Folly Beach's weather. Weather in February »Weather in March
The pleasantness of the weather continues in March, with a noticeable rise compared to February, temperatures range from 54.1°F (12.3°C) to 64.4°F (18°C). As with the previous months, there is no snowfall in March, reinforcing the snow-free climate of Folly Beach. Weather in March »Weather in April
April's weather brings a change in comparison to March. The temperatures in April present a climb with the range increasing to 61.9°F (16.6°C) to 71.4°F (21.9°C). April stands as a testimony to Folly Beach's lack of snowfall which remains consistent throughout the year. Weather in April »Weather in May
In May, Folly Beach experiences a significant increase in temperatures compared to April. Temperatures now range from 69.3°F (20.7°C) to 78.1°F (25.6°C). Predictably, there are no days with snowfall reinforcing Folly Beach's unchanging zero-snow nature. Weather in May »Weather in June
June marks the official start of the summer season in Folly Beach, with a climb in temperatures compared to May, moving between 75.9°F (24.4°C) to 84.2°F (29°C). There is an increase in rainfall in June when compared with May, making this month the wettest yet, with 1.14" (29mm) falling on an average of 13.4 days. Weather in June »Weather in July
July sees Folly Beach at its warmest with temperatures ranging between 78.4°F (25.8°C) to 86.2°F (30.1°C), marking the peak of summer. Despite the increase in humidity and cloud cover from June, July records the same amount of rainfall i.e, 1.1" (28mm). Weather in July »Weather in August
August in Folly Beach tends to mirror July in terms of temperatures, remaining within the range of 78.4°F (25.8°C)-86°F (-65.6°C). In relation to the previous month, there is a significant rise in rainfall in August, with the city experiencing its maximum rainfall of 1.93" (49mm). Weather in August »Weather in September
September marks a change in Folly Beach's climate as temperatures start to descend from August's peaks, ranging between 74.3°F (23.5°C) to 82.6°F (28.1°C). Despite the decrease in temperatures, September records only slightly lower rainfall when compared to August, thereby contributing to the wet season. Weather in September »Weather in October
October presents a noticeable cooling from September, with the weather in Folly Beach showing temperatures ranging From 65.7°F (18.7°C) to 75.2°F (24°C). Consistent with the rest of the year, October registers zero snowfall days. Weather in October »Weather in November
The month of November sees an additional drop in temperatures from October with temperatures oscillating between 55.6°F (13.1°C) to 65.8°F (18.8°C). Taking a look at the recorded data, November experiences a further reduction in rainfall, with average falls of 0.51" (13mm). Weather in November »Weather in December
December marks the end of the year, with the weather in Folly Beach dipping further, showcasing a temperature range from 51.1°F (10.6°C) to 60.6°F (15.9°C). Winter isn't synonymous with snowfall as evidenced by the zero snowfall days in December. Weather in December »Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Folly Beach's January weather, with an average high temperature of 57°F (13.9°C) and an average low temperature of 46.4°F (8°C), tends to be the coldest of the year.
The months with the lowest humidity are January, March and October, with an average relative humidity of 73%.
The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 0.24" (6mm) of precipitation.
In Folly Beach, during the entire year, the rain falls for 113.3 days and collects up to 10" (254mm) of precipitation.
January and December are months with snowfall.
The month with the most snowfall days is January, when snow falls for 0.2 days.
Throughout the year, there are 0.3 snowfall days.
January is the month with the lowest UV index, with an average maximum UV index of 3.
In Folly Beach, snow does not fall in February through November.
The month with the coldest seawater is February, with an average ocean temperature of 62.1°F (16.7°C).
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through August, with an average maximum UV index of 7, are months with the highest UV index.
With an average of 14h and 18min of daylight, June has the longest days of the year in Folly Beach.
July tends to be the warmest month, with temperatures averaging a daily high of 86.2°F (30.1°C) and a low of 78.4°F (25.8°C).
With an average of 11h of sunshine, July has the most sunshine of the year.
The month with the most rainfall is August, when the rain falls for 17.3 days and typically aggregates up to 1.93" (49mm) of precipitation.
August is the month with the warmest seawater, with an average ocean temperature of 83.5°F (28.6°C).
With an average relative humidity of 78%, December is the most humid month.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 5.7h of sunshine.
Average temperature
Folly Beach, SC
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).
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
Folly Beach, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"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
Folly Beach, SC
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.8mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
9.4mph - Average wind speed in August:
8.8mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.2mph
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
Folly Beach, SC
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
Folly Beach, SC
- Average rainfall in January:
0.24" - Average rainfall in February:
0.35" - Average rainfall in March:
0.39" - Average rainfall in April:
0.71" - Average rainfall in May:
0.47" - Average rainfall in June:
1.14"
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
Folly Beach, SC
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
6 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
8.8 days - Average rainfall days in May:
9.9 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
6.8 days - Average rainfall days in November:
5.2 days - Average rainfall days in December:
6.2 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
Folly Beach, SC
- Average snowfall days in January:
0.2 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.1 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
Folly Beach, SC
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 / Average sunshine
Folly Beach, SC
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 48min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
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 - Average sunshine in February:
6h and 48min - Average sunshine in March:
7h and 48min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 30min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 54min - Average sunshine in September:
9h and 6min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 42min
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
Folly Beach, SC
- Average sunshine days in January:
23.9 days - Average sunshine days in February:
20.9 days - Average sunshine days in March:
23.3 days - Average sunshine days in April:
20 days - Average sunshine days in May:
18.4 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
8.5 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
22.3 days - Average sunshine days in November:
23.6 days - Average sunshine days in December:
23.5 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
Folly Beach, SC
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
Folly Beach, SC
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
Folly Beach, SC
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).
