Climateby Month

Galveston, TX climate by month

NOAA 1991-2020 normals · 6 ft elevation

Galveston has hot and oppressively humid summers and cool winters. Highs peak at 92°F in August and fall to 63°F in January. Wet days are spread through the year, from about 6 to 10 a month. By our comfort score the best months are March, April and November.

Warmest month
92°F
August normal high
Coldest month
49°F
January normal low
Wet days a year
100
47.2 in of precipitation
Muggy days a year
200
dew point 65°F or higher

How warm is Galveston?

Normal highs range from 63°F in January to 92°F in August.

40°50°60°70°80°90°100° January: normal high 63°F (17°C), low 49°F (9°C) 63° 49° February: normal high 66°F (19°C), low 52°F (11°C) March: normal high 72°F (22°C), low 58°F (14°C) April: normal high 78°F (26°C), low 65°F (18°C) May: normal high 84°F (29°C), low 72°F (22°C) June: normal high 90°F (32°C), low 78°F (26°C) July: normal high 91°F (33°C), low 80°F (27°C) August: normal high 92°F (33°C), low 80°F (27°C) 92° 80° September: normal high 89°F (32°C), low 76°F (24°C) October: normal high 82°F (28°C), low 69°F (21°C) November: normal high 72°F (22°C), low 59°F (15°C) December: normal high 66°F (19°C), low 52°F (11°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Galveston?

January has the most wet days (about 10); the year brings about 47 in of precipitation.

January: 10 wet days 10 February: 9 wet days March: 8 wet days April: 6 wet days May: 6 wet days 6 June: 9 wet days July: 8 wet days August: 9 wet days September: 10 wet days October: 8 wet days November: 9 wet days December: 10 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Galveston?

Muggy days peak in July, at about 31 days.

January: 1 muggy days 1 February: 2 muggy days March: 9 muggy days April: 14 muggy days May: 25 muggy days June: 29 muggy days July: 31 muggy days 31 August: 31 muggy days September: 27 muggy days October: 18 muggy days November: 9 muggy days December: 4 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Scholes Intl At Glston Apt, 4.5 mi WSW of the city center.

How much daylight?

Daylight ranges from about 10.3 hours in December to 14.0 hours in June.

January: 10.5 hours of daylight February: 11.2 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.6 hours of daylight June: 14.0 hours of daylight 14.0 July: 13.8 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.4 hours of daylight November: 10.7 hours of daylight December: 10.3 hours of daylight 10.3 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Galveston, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 63°F49°F 4.3 in10 0.0 in 1 10.5 h
February 66°F52°F 2.1 in9 0.0 in 2 11.2 h
March 72°F58°F 3.0 in8 0.0 in 9 12.0 h
April 78°F65°F 2.1 in6 0.0 in 14 12.9 h
May 84°F72°F 3.0 in6 0.0 in 25 13.6 h
June 90°F78°F 4.2 in9 0.0 in 29 14.0 h
July 91°F80°F 3.4 in8 0.0 in 31 13.8 h
August 92°F80°F 4.7 in9 0.0 in 31 13.2 h
September 89°F76°F 6.7 in10 0.0 in 27 12.3 h
October 82°F69°F 5.2 in8 0.0 in 18 11.4 h
November 72°F59°F 4.3 in9 0.0 in 9 10.7 h
December 66°F52°F 4.2 in10 0.2 in 4 10.3 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Galveston

By our comfort score, the best months are March, April and November.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 56951
Feb 59930
Mar 631140
Apr 63930
May 56241
Jun 47069
Jul 400520
Aug 360524
Sep 410710
Oct 55651
Nov 601150
Dec 55950

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Galveston

The last spring frost typically comes around Jan 25, and the first fall frost around Jan 1, leaving 348 frost-free days in a typical year.

Frost and freeze dates for Galveston
Typical date1 year in 10
Last spring frost (32°F)Jan 25after Feb 21
First fall frost (32°F)Jan 1before Dec 9
Hard freeze (28°F)in about 36% of years; no typical date
Frost-free season348 daysunder 313 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Galveston (USW00012944), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Texas.

Hottest and coldest readings, 1991-2020

The highest reading was 104°F (September 5, 2000); the lowest was 25°F (January 17, 2018).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Galveston

Similar climates elsewhere

Where the numbers come from

  • Temperature and rain: Galveston Scholes Fld (USW00012923), 4.2 mi WSW of the city center, 5 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Houston Nwso (USC00414333), 21 mi NW of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
  • Frost dates: Galveston (USW00012944), 0.2 mi SW of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Houston Intercont Airport (USW00012960), 58 mi NW of the city center, 95 ft (89 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Scholes Intl At Glston Apt (722420-12923), 4.5 mi WSW of the city center, 5 ft . Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error