Temperatures in May
It's warm in May in Galveston with an average temperature of 29°C. Temperatures this month range from a low of 27°C to a high of 30°C. At night, you can expect temperatures between 22°C and 26°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Galveston in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in Galveston with hot temperatures, averaging around 28°C during the day and nights close to 23°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-May
By mid-May, the average daytime temperature rises to around 29°C, with nights close to 24°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of May
By the end of May, the average daytime temperature in Galveston will be around 30°C, with nights close to 25°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Water temperature
The water temperature at Galveston is 27°C this month. Nice and warm for a swim.
Precipitation in May
In May, there is an average of 107 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 24% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for Galveston. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Galveston in May |
London | ||
|---|---|---|---|
 Average Temperature |
29°C | 18°C | |
 High Temp |
30°C | 21°C | |
| Low Temp |
27°C | 15°C | |
 Total Precipitation |
107 mm | 46 mm | |
| Rainy Days |
8 days | 8 days | |
April
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Galveston?
After some sun? Then May isn’t the best time to be in Galveston. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Galveston runs from June to November.
Temperature records for Galveston in May
With 34°C, Galveston hit the highest temperature in the last 10 years in May 2022. The lowest daytime temperature in this month was 22°C in 2014. The extreme night temperatures ranged from a low of 13°C to a high of 29°C.
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Daily Temperature in May in Galveston
This chart shows the average daily temperatures, both day and night, for each day in May in Galveston, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in Galveston
The chart below shows the average daily precipitation in May for Galveston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 8 days of rain in Galveston.
Daily UV Index in May in Galveston
This chart shows the average daily UV index in May in Galveston, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Galveston Over the Years
This chart shows the average temperature in May in Galveston, measured in degrees Celsius, over the past years.
Total Precipitation in May in Galveston Over the Years
This chart shows the average precipitation in May in Galveston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for Galveston
Click on a specific day in May for detailed info on the typical weather on that day in Galveston. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Galveston
Have you been to Galveston in May?
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Average Weather in Galveston by Month
Click on a month below to see detailed weather info for Galveston. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Galveston for all months at once
