Galveston, Texas weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: May – October
What is the weather like in Galveston, Texas in May?
In May, Galveston, Texas is warm: daytime highs average 27 °C, and even at night it stays warm at around 23 °C. The sea averages 25.5 °C – pleasant for swimming. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 96 mm in total. The air is often humid and muggy. All in all, May is an excellent month for a holiday in Galveston, Texas.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 36 min06:27 – 20:03
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 27 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %67 %
- Few rainy daysweight 20 %56 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Galveston, Texas in May: quick answers
Is Galveston, Texas hot in May?
Warm rather than hot: in May, daytime highs in Galveston, Texas average 27 °C and nights cool to about 23 °C.
Can you swim in Galveston, Texas in May?
Yes. In May the sea averages 25.5 °C – pleasant for swimming.
Does it rain much in Galveston, Texas in May?
Rain is frequent, with about 10 rainy days and 96 mm in total.
Galveston, Texas month by month
The whole year in Galveston, TexasAll destinations: USAWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences