Our verdict
The best time to visit Galveston is March-May
The very hottest temperatures in Galveston get to around 32℃ (90℉) in the height of summer. The weather in the winter, especially around January, can reach a minimum of 9℃ (48℉).
If you’re a sun-chaser and want to visit Galveston when the days are longest, you should visit in August. The wet season in Galveston usually falls during the months surrounding September each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
Learn everything you need to know to help you decide when to go to Galveston below, and don’t forget to use the awesome travel tools we know and love to help you find the best deals and make booking your vacation a breeze!
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
Galveston seasons
Before you continue, it’s important to know when the seasons are in Galveston as they might be different to yours depending on where in the world you’re travelling from. Galveston is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Galveston
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Galveston for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Galveston climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Galveston for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Galveston in January
- Average temperature: 13℃ (56℉)
- Average high temperature: 15℃ (60℉)
- Average low temperature: 11℃ (52℉)
- Average humidity: 77%
- Average sunny days: 18 days
- Average rainfall: 31mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in January, make sure you pack a warm jacket or coat.
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Galveston in February
- Average temperature: 15℃ (59℉)
- Average high temperature: 17℃ (62℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 81%
- Average sunny days: 15 days
- Average rainfall: 19mm (1") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in February, make sure you pack a light jumper or hoodie.
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Galveston in March
- Average temperature: 18℃ (64℉)
- Average high temperature: 20℃ (67℉)
- Average low temperature: 16℃ (61℉)
- Average humidity: 81%
- Average sunny days: 18 days
- Average rainfall: 19mm (1") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in March, make sure you pack a light jumper or hoodie.
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Galveston in April
- Average temperature: 21℃ (70℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 19℃ (67℉)
- Average humidity: 79%
- Average sunny days: 17 days
- Average rainfall: 25mm (1") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in April, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Galveston in May
- Average temperature: 25℃ (77℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 79%
- Average sunny days: 18 days
- Average rainfall: 47mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in May, make sure you pack t-shirts and light clothing.
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Galveston in June
- Average temperature: 28℃ (82℉)
- Average high temperature: 30℃ (85℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 77%
- Average sunny days: 13 days
- Average rainfall: 59mm (2") over 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in June, make sure you pack t-shirts and light clothing.
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Galveston in July
- Average temperature: 29℃ (84℉)
- Average high temperature: 30℃ (87℉)
- Average low temperature: 28℃ (82℉)
- Average humidity: 76%
- Average sunny days: 10 days
- Average rainfall: 74mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Galveston in August
- Average temperature: 29℃ (85℉)
- Average high temperature: 31℃ (87℉)
- Average low temperature: 28℃ (82℉)
- Average humidity: 75%
- Average sunny days: 9 days
- Average rainfall: 84mm (3") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Galveston in September
- Average temperature: 27℃ (81℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 75%
- Average sunny days: 8 days
- Average rainfall: 109mm (4") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in September, make sure you pack t-shirts and light clothing.
Galveston in October
- Average temperature: 24℃ (75℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 22℃ (71℉)
- Average humidity: 72%
- Average sunny days: 16 days
- Average rainfall: 58mm (2") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in October, make sure you pack t-shirts and light clothing.
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Galveston in November
- Average temperature: 19℃ (65℉)
- Average high temperature: 21℃ (69℉)
- Average low temperature: 16℃ (61℉)
- Average humidity: 75%
- Average sunny days: 18 days
- Average rainfall: 38mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in November, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Galveston in December
- Average temperature: 15℃ (59℉)
- Average high temperature: 17℃ (63℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 79%
- Average sunny days: 14 days
- Average rainfall: 35mm (1") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Galveston in December, make sure you pack a light jumper or hoodie.
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