United States · 1991–2020

Best time to visit
Folly Beach.

April leads for comfortable weather in Folly Beach: typically 22.6°C by day, 15.5°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high22.6°C

Typical low15.5°C

Rain in April75 mm

Comfort

April

April · October · May

87climate match

Beach

May

May · June · September

82climate match

Outdoors

November

November · March · February

90climate match

The weakest month is August, scoring 38 against April’s 87 — days average 30.4°C, 6° above the 24°C the score treats as ideal, and nights stay at 24.8°C.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

4614.7° / 6.5°

Feb

5415.9° / 7.9°

Mar

6718.9° / 11.2°

Apr

8722.6° / 15.5°

May

7726.3° / 20.1°

Jun

5029.3° / 23.6°

Jul

4031.1° / 25.2°

Aug

3830.4° / 24.8°

Sep

5428.4° / 22.6°

Oct

8224.4° / 17.4°

Nov

7619.7° / 11.8°

Dec

5416.3° / 8.3°

Monthly climate evidence for Folly Beach — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 7 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14.7°C	6.5°C	65 mm	6.6	16.2°C	10 h 13	46	Strong coverage
February	15.9°C	7.9°C	65 mm	6	15.5°C	10 h 58	54	Strong coverage
March	18.9°C	11.2°C	78 mm	6.2	16.3°C	11 h 53	67	Strong coverage
April	22.6°C	15.5°C	75 mm	5.7	18.9°C	12 h 56	87	Strong coverage
May	26.3°C	20.1°C	65 mm	5.2	22.9°C	13 h 49	77	Strong coverage
June	29.3°C	23.6°C	123 mm	8	26.4°C	14 h 17	50	Strong coverage
July	31.1°C	25.2°C	129 mm	9.3	28.3°C	14 h 06	40	Strong coverage
August	30.4°C	24.8°C	154 mm	9.8	28.4°C	13 h 21	38	Strong coverage
September	28.4°C	22.6°C	135 mm	7.5	27.1°C	12 h 20	54	Strong coverage
October	24.4°C	17.4°C	103 mm	5.5	24.0°C	11 h 19	82	Strong coverage
November	19.7°C	11.8°C	56 mm	4.8	20.2°C	10 h 26	76	Strong coverage
December	16.3°C	8.3°C	73 mm	6.3	18.0°C	10 h 01	54	Strong coverage

What has changed

Folly Beach runs +0.6°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+1.5

Feb

+2.0

Mar

+0.9

Apr

+0.2

May

-0.1

Jun

0.0

Jul

-0.1

Aug

0.0

Sep

+0.4

Oct

+0.7

Nov

+0.1

Dec

+1.7

April daytime highs, 2011–2025. Last recorded: 23.2°C.

Records at DWTN CHARLESTON, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	27.8°C23 Jan 1937	-12.2°C21 Jan 1985	67 mm16 Jan 1925	195 mm1895 · driest 5 mm in 1898	134
February	28.3°C28 Feb 2023	-13.9°C14 Feb 1899	121 mm14 Feb 1944	228 mm1939 · driest 7 mm in 1950	134
March	34.4°C23 Mar 1907	-5.6°C3 Mar 1980	92 mm9 Mar 2024	267 mm1944 · driest 8 mm in 1938	134
April	34.4°C23 Apr 1980	2.2°C7 Apr 1982	93 mm28 Apr 1997	188 mm1920 · driest 0 mm in 1972	134
May	37.8°C27 May 2019	7.2°C20 May 1894	137 mm23 May 1976	303 mm1976 · driest 1 mm in 2000	134
June	40.0°C2 Jun 1985	9.4°C12 Jun 1913	264 mm11 Jun 1973	489 mm1973 · driest 7 mm in 1918	133
July	39.4°C6 Jul 1902	16.1°C4 Jul 1933	181 mm14 Jul 1921	603 mm1964 · driest 14 mm in 1986	133
August	39.4°C1 Aug 1999	15.0°C29 Aug 1986	195 mm11 Aug 1940	425 mm1940 · driest 5 mm in 1954	133
September	37.8°C5 Sep 1944	10.0°C29 Sep 1942	262 mm6 Sep 1933	413 mm1945 · driest 10 mm in 1901	133
October	35.0°C6 Oct 1919	2.8°C27 Oct 1926	235 mm3 Oct 2015	444 mm2015 · driest 0 mm in 2000	133
November	30.6°C1 Nov 1961	-8.3°C25 Nov 1950	169 mm1 Nov 1969	182 mm2015 · driest 0 mm in 2001	133
December	27.2°C7 Dec 1998	-11.1°C30 Dec 1917	100 mm17 Dec 2023	268 mm1941 · driest 5 mm in 1919	133

Typical days per month at DWTN CHARLESTON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	4	2
February	<1	0	1	2
March	2	<1	<1	3
April	7	<1	0	2
May	22	4	0	2
June	29	12	0	4
July	31	22	0	4
August	31	19	0	4
September	27	9	0	3
October	16	1	0	3
November	3	0	<1	2
December	<1	0	1	2

The best month has moved. On the 1961–1990 numbers the strongest month here was October (scoring 93); on 2011–2025 it is April (88). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in DWTN CHARLESTON’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	13%	22%	8%	21%	11.6–17.3°C
February	16%	24%	9%	25%	12.7–17.9°C
March	34%	23%	10%	20%	16.4–21.0°C
April	64%	19%	7%	14%	21.3–24.0°C
May	79%	20%	8%	18%	25.0–27.8°C
June	72%	28%	12%	33%	28.2–31.2°C
July	67%	33%	15%	44%	30.0–32.2°C
August	67%	33%	15%	40%	29.5–31.7°C
September	75%	25%	11%	25%	27.0–29.7°C
October	75%	16%	7%	12%	22.5–25.5°C
November	42%	17%	5%	12%	17.5–21.2°C
December	17%	21%	7%	19%	12.9–18.0°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1893Each stripe is one year’s mean temperature against the 132-year average. Warmest: 1998. Coolest: 1901.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4578801
NOAA station: USW00013782 · DWTN CHARLESTON
Station distance: 13.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 32.66°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 7 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from DWTN CHARLESTON is what differs

Charleston→James Island→Dupont Station→Anson Borough Homes→Ashley Forest→Ashley Hall Manor→

Or put two places side by side: Folly Beach vs Charleston

Best time to visitFolly Beach.

April

May

November

The whole year,without the guesswork.

Folly Beach runs +0.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Folly Beach.

The whole year,
without the guesswork.

Folly Beach runs +0.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.