Galveston Island (TX)
May
Weather in Galveston Island, Texas for May 2026
Your guide to Galveston Island weather in May - trends and predictions
In general, the average temperature in Galveston Island at the beginning of May is 24.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 26.4 °F by the end of May.
Galveston Island in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 204.9 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
14
Dry days
17
Rainy days
0
Snow days
25°/24°
Temperatures
32 km/h
Avg max wind
89 %
Avg humidity
Galveston Island Weather May
Move between months or click on a day
Temperatures trend during May in Galveston Island
See the weather trend as well as the moving average line
May weather in Galveston Island day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate rain at times | 24° /23° | 2.3 mm | 5 | |
| May 2 | Moderate or heavy rain shower | 24° /23° | 8.4 mm | 5 | |
| May 3 |  Patchy rain possible | 26° /22° | 0.9 mm | 6 | |
| May 4 |  Cloudy | 25° /22° | 0 mm | 6 | |
| May 5 | Moderate or heavy rain shower | 24° /23° | 29.6 mm | 5 | |
| May 6 | Moderate or heavy rain shower | 25° /23° | 75.8 mm | 6 | |
| May 7 | Moderate or heavy rain shower | 25° /24° | 25.2 mm | 6 | |
| May 8 | Moderate or heavy rain shower | 25° /23° | 7.4 mm | 6 | |
| May 9 | Patchy rain possible | 26° /22° | 17.6 mm | 6 | |
| May 10 | Patchy rain possible | 25° /21° | 4 mm | 6 | |
| May 11 | Cloudy | 23° /19° | 0.2 mm | 5 | |
| May 12 |  Partly cloudy | 25° /19° | 0 mm | 7 | |
| May 13 | Patchy rain possible | 24° /23° | 0.1 mm | 5 | |
| May 14 |  Overcast | 25° /23° | 0 mm | 6 | |
| May 15 | Overcast | 24° /24° | 0 mm | 5 | |
| May 16 | Patchy rain possible | 25° /23° | 0.2 mm | 6 | |
| May 17 | Overcast | 24° /24° | 0 mm | 5 | |
| May 18 | Overcast | 25° /24° | 0.2 mm | 6 | |
| May 19 | Overcast | 25° /24° | 0 mm | 6 | |
| May 20 | Overcast | 25° /24° | 0 mm | 6 | |
| May 21 | Moderate or heavy rain shower | 26° /24° | 7.7 mm | 6 | |
| May 22 | Patchy rain possible | 26° /24° | 0.7 mm | 6 | |
| May 23 | Moderate rain at times | 26° /24° | 2.4 mm | 6 | |
| May 24 | Moderate rain at times | 26° /25° | 4.2 mm | 6 | |
| May 25 |  Thundery outbreaks possible | 26° /25° | 0 mm | 6 | |
| May 26 | Thundery outbreaks possible | 26° /25° | 0 mm | 6 | |
| May 27 | Thundery outbreaks possible | 26° /25° | 0 mm | 6 | |
| May 28 | Light rain shower | 26° /26° | 3.2 mm | 6 | |
| May 29 |  Patchy light rain with thunder | 26° /25° | 4.9 mm | 6 | |
| May 30 | Moderate or heavy rain shower | 28° /26° | 4.3 mm | 6 | |
| May 31 | Patchy rain possible | 27° /25° | 0.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Galveston Island in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Galveston Island forecast closer to your planned date for the most up-to-date weather information.
Change Month
Galveston Island in May - FAQ
What are the expected maximum and minimum temperatures in Galveston Island during May?
During May, expect a variety of temperatures with highs around 25° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Galveston Island during May?
Significant rainfall exceeding 204.9 mm is expected in Galveston Island during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Galveston Island during May?
The average wind speed in Galveston Island during May is 32 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Galveston Island
Explore the daily rainfall trends and prepare for Galveston Islands May weather 💧
UV exposure in Galveston Island during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Quick links
More Galveston Island weather pages
You are here
Where is Galveston Island?Get accurate weather forecasts for Galveston Island, located at latitude 29.222 and longitude -94.909. Stay updated with localized weather information tailored for Galveston Island.
Found a mistake?
We appreciate your attention to details. Tell us here.