Annual mean 22°C · wettest around January · prevailing wind SE
Warmest
31.5 °C
Coldest
13.7 °C
Wettest
41%
Windiest
5.8 m/s
Prevailing
SE
4.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Galveston over the whole year is 22°C. August is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 12°C. The rainy (wet) season in Galveston runs from January, peaking in January with a 38% chance of rain on a given day. The dry season is June to December; October is the driest month, at 17%. Winds in Galveston are highest in April, averaging 5.2 m/s (19 km/h), and lightest in July, at 3.8 m/s (14 km/h). The prevailing wind is from the SE. The clearest skies in Galveston come in August, when the sky is typically 31% covered; February is the cloudiest month, at 59%.
Month by month Galveston climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
14°C
12°C
12°C
38%
52%
4.5 m/s
37
4
61
February
16°C
14°C
15°C
22%
59%
4.6 m/s
53
8
62
March
20°C
17°C
19°C
28%
57%
4.9 m/s
68
21
58
April
23°C
20°C
23°C
30%
54%
5.2 m/s
72
35
44
May
27°C
24°C
28°C
32%
52%
5.1 m/s
37
63
11
June
30°C
27°C
33°C
19%
39%
4.5 m/s
7
45
1
July
31°C
27°C
35°C
18%
32%
3.8 m/s
3
26
0
August
31°C
28°C
35°C
20%
31%
3.8 m/s
3
24
0
September
29°C
26°C
32°C
19%
34%
3.8 m/s
14
48
3
October
25°C
22°C
26°C
17%
34%
4.3 m/s
42
52
25
November
19°C
16°C
19°C
17%
47%
4.2 m/s
59
24
54
December
16°C
14°C
15°C
20%
55%
4.3 m/s
50
11
62
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Galveston weather by season
Year round, Galveston has days of about 14°C at their warmest in January, its coolest month, and 31°C in August, its warmest; the coolest hours of the day run from 12°C to 28°C through the year, and the average temperature over the year is 22°C around the clock. Rain is most likely around January and least likely around October. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Galveston weather in winterDecember to February
High 16°CLow 13°CRain 27%
Winter in Galveston has typical daily highs of about 16°C and lows of about 13°C, with a 27% chance of rain on a given day.
Galveston weather in springMarch to May
High 23°CLow 20°CRain 30%
Spring in Galveston has typical daily highs of about 23°C and lows of about 20°C, with a 30% chance of rain on a given day.
Galveston weather in summerJune to August
High 30°CLow 27°CRain 19%
Summer in Galveston has typical daily highs of about 30°C and lows of about 27°C, with a 19% chance of rain on a given day.
Galveston weather in autumnSeptember to November
High 24°CLow 21°CRain 18%
Autumn in Galveston has typical daily highs of about 24°C and lows of about 21°C, with a 18% chance of rain on a given day.
When is the rainy season in Galveston?
The rainy (wet) season in Galveston runs from January, peaking in January with a 38% chance of rain on a given day. The dry season is June to December; October is the driest month, at 17%.
What time of year is Galveston windiest?
Winds in Galveston are highest in April, averaging 5.2 m/s (19 km/h), and lightest in July, at 3.8 m/s (14 km/h). The prevailing wind is from the SE.
What is the average temperature in Galveston year round?
The average temperature in Galveston over the whole year is 22°C. August is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 12°C.