Galveston climate — normals and trends

Q: What is the climate of Galveston?

Galveston has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,228 mm of precipitation per year.

Q: What is the hottest day ever recorded in Galveston?

The hottest day measured in Galveston between 1940 and 2025 was 27 August 2023, reaching 33.9 °C.

Q: What is the coldest day in Galveston?

The coldest day measured in Galveston between 1940 and 2025 was 23 December 1989, at -6.7 °C.

Q: Does it snow in Galveston?

Almost never: Galveston sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Galveston warmed?

Yes: Galveston warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Galveston?

The wettest day measured in Galveston between 1940 and 2025 was 27 August 1945, with 269 mm of rain in 24 hours.

Q: What was the windiest day in Galveston?

The windiest day measured in Galveston between 1940 and 2025 was 11 September 1961, with winds reaching 108.0 km/h.

Q: What is the warmest month in Galveston?

The warmest month in Galveston is August (28.1 °C on average); the coldest is January (13.1 °C).

Q: How much does it rain in Galveston?

Galveston receives on average 1,228 mm of precipitation per year, spread over about 121 rainy days.

Q: Is it sunny in Galveston?

Galveston gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.

Galveston (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.3 °C and it receives 1,228 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is August (28.1 °C on average) and the coldest is January (13.1 °C). Rainfall peaks in September.

Galveston averages 1 frost days, 12 hot days (≥ 30 °C) and 121 rainy days per year.

Galveston has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 33.9 °C (on 27 August 2023) and the coldest -6.7 °C (on 23 December 1989).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

GalvestonTexas

coords: 29.30°, -94.80°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthSeptemberDriest monthMarch

Mean daily temperature

21.3°C

Average daily high

22.7°C

Average daily low

19.8°C

Annual rainfall

1,228mm

Sunshine / day

9.9h

Mean relative humidity

79%

Average peak wind

27.0km/h

Seasonal range

15.0°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

12 d/yr

Rainy days (≥ 1 mm)

121 d/yr

Annual snowfall

0.5 cm

Average feels-like high

24.2 °C

Average feels-like low

19.4 °C

Average peak gust

38.0 km/h

Tropical nights (≥ 20 °C)

200 d/yr

Solar radiation

17.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.26 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

33.9 °C

27 August 2023

Coldest day

-6.7 °C

23 December 1989

Wettest day

269 mm

27 August 1945

Windiest day

108.0 km/h

11 September 1961

Strongest gust

163.8 km/h

12 September 2008

Hottest feels-like

41.1 °C

30 August 1954

Coldest feels-like

-15.0 °C

23 December 1989

Snowiest day

12.5 cm

30 January 1949

Sunniest day

13.4 h

12 June 2020

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	31.5 °C30 July 2025	-0.5 °C22 January 2025	22.4 °C	1,346 mm	24	1
2024	32.5 °C19 August 2024	-2.1 °C16 January 2024	22.7 °C	1,723 mm	37	1
2023	33.9 °C27 August 2023	6.1 °C11 February 2023	22.6 °C	995 mm	56	0
2022	31.7 °C22 September 2022	-2.5 °C23 December 2022	21.6 °C	1,182 mm	18	2
2021	31.3 °C13 June 2021	-5.6 °C16 February 2021	21.9 °C	1,427 mm	31	2
2020	31.7 °C15 September 2020	4.8 °C6 February 2020	22.4 °C	1,241 mm	30	0
2019	32.8 °C12 July 2019	3.1 °C5 March 2019	21.8 °C	1,432 mm	27	0
2018	31.5 °C22 August 2018	-1.9 °C17 January 2018	21.7 °C	1,744 mm	14	2
2017	30.7 °C29 July 2017	0.2 °C7 January 2017	22.5 °C	1,766 mm	15	0
2016	31.8 °C1 September 2016	4.4 °C19 December 2016	22.5 °C	1,441 mm	38	0
2015	31.7 °C31 July 2015	1.7 °C8 January 2015	21.8 °C	1,609 mm	16	0
2014	31.2 °C12 August 2014	1.2 °C6 January 2014	20.9 °C	1,170 mm	4	0
2013	31.7 °C30 June 2013	4.7 °C16 January 2013	21.2 °C	1,079 mm	5	0
2012	32.4 °C25 June 2012	4.1 °C26 December 2012	22.4 °C	1,366 mm	20	0
2011	32.0 °C27 August 2011	-1.0 °C2 February 2011	21.7 °C	589 mm	33	1
2010	32.5 °C16 August 2010	-1.4 °C9 January 2010	21.2 °C	906 mm	32	1
2009	31.0 °C12 August 2009	3.5 °C25 December 2009	21.6 °C	1,201 mm	10	0
2008	32.1 °C1 September 2008	4.3 °C11 December 2008	21.6 °C	1,127 mm	9	0
2007	33.7 °C12 August 2007	1.5 °C16 February 2007	21.5 °C	1,420 mm	10	0
2006	31.9 °C29 August 2006	4.2 °C8 December 2006	21.9 °C	1,268 mm	6	0
2005	33.1 °C29 August 2005	5.0 °C23 January 2005	21.7 °C	1,070 mm	19	0
2004	31.6 °C16 September 2004	2.5 °C25 December 2004	21.7 °C	1,407 mm	15	0
2003	30.8 °C7 August 2003	2.3 °C24 January 2003	21.1 °C	1,177 mm	4	0
2002	31.8 °C14 June 2002	1.1 °C3 January 2002	21.2 °C	1,610 mm	14	0
2001	30.7 °C5 August 2001	1.2 °C3 January 2001	21.3 °C	1,235 mm	5	0
2000	33.4 °C4 September 2000	3.8 °C30 December 2000	21.6 °C	902 mm	17	0
1999	32.1 °C4 August 1999	2.5 °C4 January 1999	22.0 °C	820 mm	18	0
1998	32.1 °C2 September 1998	4.7 °C25 December 1998	21.9 °C	1,487 mm	23	0
1997	31.7 °C5 July 1997	3.1 °C13 January 1997	21.0 °C	1,438 mm	10	0
1996	30.7 °C12 August 1996	-0.5 °C4 February 1996	20.9 °C	898 mm	8	2
1995	32.0 °C29 August 1995	4.8 °C10 December 1995	21.6 °C	1,627 mm	38	0
1994	30.1 °C15 August 1994	4.0 °C10 February 1994	21.6 °C	1,083 mm	1	0
1993	31.2 °C1 September 1993	4.9 °C23 December 1993	21.2 °C	1,368 mm	19	0
1992	31.7 °C26 August 1992	3.0 °C16 January 1992	21.3 °C	1,539 mm	6	0
1991	31.1 °C15 July 1991	5.4 °C22 January 1991	21.7 °C	1,548 mm	17	0
1990	33.0 °C27 August 1990	-0.1 °C24 December 1990	21.9 °C	1,093 mm	17	1
1989	31.4 °C3 September 1989	-6.7 °C23 December 1989	21.0 °C	1,398 mm	7	3
1988	31.3 °C16 August 1988	2.1 °C12 February 1988	20.8 °C	1,100 mm	7	0
1987	31.1 °C26 June 1987	5.0 °C19 January 1987	21.1 °C	1,224 mm	9	0
1986	31.8 °C18 August 1986	3.8 °C12 February 1986	21.5 °C	1,071 mm	12	0
1985	32.0 °C15 August 1985	-2.3 °C21 January 1985	21.2 °C	1,410 mm	10	2
1984	31.5 °C18 August 1984	1.4 °C19 January 1984	21.1 °C	993 mm	6	0
1983	31.6 °C31 August 1983	-5.7 °C25 December 1983	20.5 °C	1,556 mm	5	3
1982	30.1 °C1 August 1982	-1.5 °C11 January 1982	21.4 °C	1,147 mm	4	2
1981	31.8 °C10 July 1981	-0.1 °C11 February 1981	21.2 °C	1,163 mm	18	1
1980	31.6 °C15 September 1980	-0.2 °C2 March 1980	21.2 °C	1,086 mm	14	1
1979	30.6 °C6 August 1979	-2.1 °C2 January 1979	20.5 °C	1,723 mm	6	2
1978	30.5 °C13 June 1978	0.3 °C20 January 1978	20.8 °C	1,016 mm	9	0
1977	31.6 °C4 September 1977	-1.9 °C10 January 1977	21.0 °C	1,105 mm	4	1
1976	30.6 °C7 August 1976	-0.5 °C8 January 1976	20.5 °C	973 mm	3	1
1975	30.9 °C3 September 1975	1.2 °C13 January 1975	21.5 °C	1,050 mm	6	0
1974	30.5 °C14 July 1974	4.1 °C4 January 1974	21.5 °C	1,127 mm	5	0
1973	31.0 °C21 August 1973	0.8 °C12 January 1973	21.1 °C	1,470 mm	7	0
1972	30.8 °C19 June 1972	1.7 °C5 January 1972	21.4 °C	966 mm	3	0
1971	31.7 °C6 September 1971	2.1 °C8 February 1971	21.5 °C	1,063 mm	6	0
1970	32.1 °C11 August 1970	-0.8 °C7 January 1970	20.5 °C	1,002 mm	9	1
1969	30.9 °C8 September 1969	3.6 °C5 January 1969	20.9 °C	769 mm	7	0
1968	30.1 °C27 August 1968	2.3 °C14 January 1968	20.7 °C	1,134 mm	2	0
1967	30.5 °C11 August 1967	3.3 °C7 February 1967	21.4 °C	1,051 mm	10	0
1966	30.6 °C17 August 1966	-1.0 °C30 January 1966	20.7 °C	1,201 mm	8	1
1965	32.0 °C10 September 1965	2.0 °C17 January 1965	21.5 °C	928 mm	3	0
1964	32.0 °C5 August 1964	-0.8 °C13 January 1964	20.9 °C	842 mm	20	1
1963	31.3 °C14 August 1963	-2.5 °C24 January 1963	21.0 °C	876 mm	7	3
1962	32.5 °C9 August 1962	-5.0 °C11 January 1962	21.3 °C	654 mm	16	3
1961	30.6 °C3 August 1961	1.1 °C29 January 1961	20.7 °C	1,445 mm	4	0
1960	31.7 °C28 July 1960	0.1 °C25 February 1960	20.7 °C	1,046 mm	5	0
1959	30.5 °C8 August 1959	1.2 °C22 January 1959	20.7 °C	1,402 mm	4	0
1958	30.9 °C13 August 1958	0.9 °C13 February 1958	20.7 °C	1,287 mm	4	0
1957	31.2 °C11 July 1957	1.2 °C17 January 1957	21.6 °C	1,231 mm	8	0
1956	30.7 °C24 September 1956	3.1 °C4 February 1956	21.5 °C	831 mm	2	0
1955	30.8 °C25 August 1955	1.6 °C11 February 1955	21.4 °C	1,067 mm	4	0
1954	32.8 °C30 August 1954	0.9 °C22 January 1954	21.6 °C	650 mm	15	0
1953	31.1 °C21 September 1953	2.0 °C24 December 1953	21.5 °C	1,367 mm	8	0
1952	29.7 °C16 August 1952	2.9 °C15 December 1952	21.2 °C	1,029 mm	0	0
1951	31.2 °C4 August 1951	-4.4 °C2 February 1951	21.3 °C	971 mm	12	3
1950	30.3 °C30 August 1950	0.9 °C7 December 1950	21.9 °C	826 mm	3	0
1949	32.0 °C1 July 1949	-2.7 °C31 January 1949	21.7 °C	1,590 mm	9	2
1948	31.2 °C4 September 1948	0.2 °C24 January 1948	21.3 °C	1,126 mm	8	0
1947	31.4 °C1 September 1947	1.1 °C4 January 1947	20.6 °C	1,694 mm	10	0
1946	30.6 °C12 July 1946	4.7 °C16 January 1946	21.5 °C	1,989 mm	4	0
1945	30.7 °C2 September 1945	4.1 °C20 December 1945	21.7 °C	1,458 mm	4	0
1944	30.8 °C26 July 1944	3.1 °C9 January 1944	21.7 °C	1,436 mm	12	0
1943	31.8 °C28 August 1943	1.5 °C3 March 1943	21.2 °C	1,513 mm	10	0
1942	30.5 °C21 July 1942	2.4 °C8 January 1942	21.2 °C	1,075 mm	3	0
1941	31.3 °C19 August 1941	5.9 °C8 February 1941	20.8 °C	1,732 mm	4	0
1940	31.8 °C8 September 1940	-1.7 °C19 January 1940	20.2 °C	1,397 mm	3	1

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

23.8 °C

+1.1 °C

Hot days (≥ 30 °C)

24 d/yr

+12

Frost days (< 0 °C)

1 d/yr

Annual rainfall

1346 mm

+118 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	13.8 °C	-1.3 °C	174 mm	+60 mm
Feb	16.8 °C	+1.0 °C	72 mm	-18 mm
Mar	20.3 °C	+1.8 °C	97 mm	+16 mm
Apr	23.5 °C	+1.7 °C	76 mm	-8 mm
May	26.5 °C	+1.2 °C	217 mm	+129 mm
Jun	28.9 °C	+0.9 °C	158 mm	+60 mm
Jul	29.7 °C	+0.7 °C	82 mm	-12 mm
Aug	29.8 °C	+0.6 °C	149 mm	+36 mm
Sep	28.8 °C	+0.8 °C	80 mm	-76 mm
Oct	26.4 °C	+1.7 °C	66 mm	-26 mm
Nov	22.5 °C	+2.2 °C	61 mm	-48 mm
Dec	18.2 °C	+1.1 °C	115 mm	+7 mm

The year's extremes

Hottest day

31.5 °C

30 Jul 2025

Coldest day

-0.5 °C

22 Jan 2025

Wettest day

92.4 mm

6 May 2025

Windiest day

49.7 km/h

21 Jan 2025

Strongest gust

96.8 km/h

10 Jan 2025

Hottest feels-like

39.4 °C

18 Aug 2025

Coldest feels-like

-8.3 °C

21 Jan 2025

Snowiest day

7.1 cm

21 Jan 2025

Sunniest day

13.3 h

2 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Galveston?

Galveston has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,228 mm of precipitation per year.

What is the hottest day ever recorded in Galveston?

The hottest day measured in Galveston between 1940 and 2025 was 27 August 2023, reaching 33.9 °C.

What is the coldest day in Galveston?

The coldest day measured in Galveston between 1940 and 2025 was 23 December 1989, at -6.7 °C.

Does it snow in Galveston?

Almost never: Galveston sees virtually no snow, with about 1 frost days per year.

Has the climate of Galveston warmed?

Yes: Galveston warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Galveston?

The wettest day measured in Galveston between 1940 and 2025 was 27 August 1945, with 269 mm of rain in 24 hours.

What was the windiest day in Galveston?

The windiest day measured in Galveston between 1940 and 2025 was 11 September 1961, with winds reaching 108.0 km/h.

What is the warmest month in Galveston?

The warmest month in Galveston is August (28.1 °C on average); the coldest is January (13.1 °C).

How much does it rain in Galveston?

Galveston receives on average 1,228 mm of precipitation per year, spread over about 121 rainy days.

Is it sunny in Galveston?

Galveston gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.

What is the biggest single-day snowfall in Galveston?

The heaviest 24-hour snowfall measured in Galveston between 1940 and 2025 was 30 January 1949, with 12.5 cm.

Are there tropical nights in Galveston?

Yes: Galveston has on average 200 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Galveston?

In Galveston, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 30 August 1954, and the lowest was -15.0 °C on 23 December 1989.

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