Galveston Weather in August
With daytime temperatures of 33°C (91°F) and nighttime lows of 27°C (81°F), August in Galveston brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 123 mm (4.8 in) falls on average.
Rainfall in Galveston in August
Typically around 13 days of rainfall are expected, averaging 123 mm (4.8 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Galveston in August
In August, Galveston gets very high temperatures, with highs of 33°C (91°F). Nights cool to around 27°C (81°F). Mornings and evenings are often more comfortable than the peak afternoon hours. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down. Average temperatures can be deceiving; some days will be hotter. Wear breathable fabrics and drink plenty of water to stay cool.
Sunshine in Galveston in August
Expect sunny days throughout the month, with an estimated 282 hours of sunshine. This makes it a pleasant time to visit Galveston.August in Galveston has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Galveston's climate page.
Galveston Temperature in August
Min Temperature
27°C (81°F)
Max Temperature
33°C (91°F)
Chance of Rain
42%
Precipitation
123 mm (4.8 in)
Rainy days
13 days
Sunshine
282 hours
Percentage Sunshine
70%
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Galveston typically stay consistent throughout August, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in August
Historical weather for Galveston in August
Browse day-by-day weather records for Galveston spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Galveston historical weather extremes in August
Based on 28 years of weather observations in Galveston between 1997 and 2025, these are the recorded extremes.
- The warmest day in August was on August 27, 2023, with a maximum of 38°C (100°F).
- On August 29, 2017, Galveston saw its coldest August day with temperatures maxing out at 24°C (75°F).
- Galveston registered its coldest August night on August 30, 2017, with temperatures dropping to 21°C (70°F).
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
perfect weather
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tolerable
unpleasant
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What to Wear in Galveston in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Galveston in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Galveston's climate page.
See the full Galveston climate overview or explore weather in the United States of America.
