The weather in Galveston in May is very hot. The average temperatures are between 23°C and 26°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Galveston during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Galveston in May 2025.
If you’re planning to visit Galveston in the near future, we highly recommend that you review the 14 day weather forecast for Galveston before you arrive.
Temperatures
26° / 23°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
93
mm
Sun Hours
11.1
Hrs
