Galveston, TX Weather
Galveston hourly forecast: next 24 hours
Today's high of 90°F (32°C) is about 3°F (2°C) above the typical July high of 87°F (30°C).
Current conditions in detail
Galveston weather tomorrow (Saturday, July 18)
Tomorrow in Galveston looks sunny, with a high of 84° and an overnight low of 80°. Rain is unlikely (8% chance). Winds top out near 14 mph, and the UV index reaches 11 (extreme).
Galveston 14-day forecast
About the weather in Galveston
Weather in Galveston is shaped by its humid subtropical climate - expect hot, humid summers and generally mild winters. August afternoons typically reach 87°F (31°C), while January highs hover near 61°F (16°C). Annual precipitation averages 66.6 inches (1691 mm) over about 156 rainy days.
Galveston weather: quick facts
- Hottest month: August - highs near 87°F (31°C)
- Coldest month: January - highs near 61°F (16°C)
- Record high: 98°F (37°C) · Record low: 21°F (-6°C) (2015–2024)
- Wettest month: September (15 rainy days) · Sunniest: June (11.4 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 87°F (31°C) and overnight lows stay near 81°F (27°C). The coolest month is January, with typical highs of 61°F (16°C) and lows around 51°F (10°C). Based on 2015–2024 weather data, temperatures have reached as high as 98°F (37°C) and dropped as low as 21°F (-6°C).
Rain, sun and snow
September is usually the wettest month. It brings about 6.9 inches (176 mm) of rain over 15 days, while February is the driest. June brings the most sunshine, averaging 11.4 hours of sun a day.
Season by season
Spring (March through May)
Spring in Galveston brings comfortable warmth, with daytime highs averaging 75°F (24°C) and nights around 67°F (20°C); expect showers on roughly 42 days across the season.
Summer (June through August)
Summer in Galveston brings hot afternoons, with daytime highs averaging 86°F (30°C) and nights around 80°F (27°C); expect showers on roughly 46 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Fall (September through November)
Fall in Galveston is mild and warm, with daytime highs averaging 78°F (25°C) and nights around 71°F (21°C); expect showers on roughly 36 days across the season.
Winter (December through February)
Winter in Galveston stays on the cool side of mild, with daytime highs averaging 63°F (17°C) and nights around 54°F (12°C); expect showers on roughly 32 days across the season.
Average temperatures in Galveston by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 61° | 51° | 10 | 5.0 in | 7.3 h/day | 77% |
| February | 63° | 54° | 11 | 3.4 in | 7.6 h/day | 82% |
| March | 69° | 61° | 12 | 4.6 in | 8.4 h/day | 80% |
| April | 74° | 67° | 14 | 5.9 in | 9.8 h/day | 78% |
| May | 80° | 74° | 16 | 6.5 in | 10.4 h/day | 80% |
| June | 85° | 79° | 15 | 6.3 in | 11.4 h/day | 78% |
| July | 87° | 81° | 14 | 5.7 in | 11.4 h/day | 78% |
| August | 87° | 81° | 16 | 6.5 in | 11.1 h/day | 76% |
| September | 85° | 78° | 15 | 6.9 in | 9.9 h/day | 75% |
| October | 79° | 71° | 11 | 5.7 in | 9.5 h/day | 73% |
| November | 70° | 62° | 10 | 5.1 in | 8.0 h/day | 76% |
| December | 65° | 56° | 11 | 4.9 in | 7.1 h/day | 80% |