Galveston Weather in May
Average highs run from 81°F on May 1 to 87°F on May 31, and lows from 69°F to 76°F. Normal precipitation for the month is 3.04 in over about 5 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 84°F
- Average low
- 72°F
- Precipitation
- 3.04 in
- Record high
- 93°FMay 13, 2011
- Record low
- 50°FMay 3, 2013
- Chance of a freeze
- 0%
- Days of 90°F or more
- 0.5
- Daylight
- 13 h 19 min to 13 h 54 min
- Cloud cover
- 54%
- Humidity
- 79%
- Dew point
- 69°F
- Wind
- 10.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 81°F | 69°F | 86°F 1955 | 57°F 2005 | 17% | 0% |
| May 2 | 81°F | 69°F | 86°F 2010 | 54°F 2013 | 17% | 0% |
| May 3 | 81°F | 69°F | 86°F 2022 | 50°F 2013 | 17% | 0% |
| May 4 | 81°F | 69°F | 88°F 1948 | 52°F 1954 | 17% | 0% |
| May 5 | 82°F | 70°F | 86°F 2022 | 58°F 1957 | 17% | 0% |
| May 6 | 82°F | 70°F | 86°F 2018 | 59°F 1957 | 17% | 0% |
| May 7 | 82°F | 70°F | 87°F 2018 | 57°F 1960 | 17% | 0% |
| May 8 | 82°F | 70°F | 88°F 2022 | 60°F 1960 | 17% | 0% |
| May 9 | 82°F | 71°F | 88°F 2002 | 61°F 1949 | 17% | 0% |
| May 10 | 83°F | 71°F | 88°F 2022 | 60°F 1961 | 17% | 0% |
| May 11 | 83°F | 71°F | 87°F 2009 | 62°F 1952 | 17% | 0% |
| May 12 | 83°F | 71°F | 90°F 2017 | 56°F 1960 | 17% | 0% |
| May 13 | 83°F | 72°F | 93°F 2011 | 60°F 1960 | 17% | 0% |
| May 14 | 84°F | 72°F | 90°F 2024 | 61°F 2014 | 18% | 0% |
| May 15 | 84°F | 72°F | 89°F 2022 | 55°F 2014 | 18% | 0% |
| May 16 | 84°F | 73°F | 90°F 2022 | 66°F 2006 | 18% | 0% |
| May 17 | 84°F | 73°F | 90°F 1948 | 65°F 2008 | 18% | 0% |
| May 18 | 84°F | 73°F | 90°F 2022 | 62°F 2009 | 18% | 0% |
| May 19 | 85°F | 73°F | 90°F 2022 | 56°F 2002 | 18% | 0% |
| May 20 | 85°F | 74°F | 91°F 2003 | 62°F 1952 | 18% | 0% |
| May 21 | 85°F | 74°F | 92°F 2005 | 63°F 1947 | 18% | 0% |
| May 22 | 85°F | 74°F | 90°F 2005 | 66°F 2001 | 19% | 0% |
| May 23 | 86°F | 74°F | 88°F 1996 | 62°F 1947 | 19% | 0% |
| May 24 | 86°F | 75°F | 90°F 2025 | 63°F 2017 | 19% | 0% |
| May 25 | 86°F | 75°F | 89°F 1958 | 63°F 1951 | 20% | 0% |
| May 26 | 86°F | 75°F | 93°F 2011 | 67°F 1961 | 20% | 0% |
| May 27 | 87°F | 75°F | 93°F 2022 | 57°F 1961 | 20% | 0% |
| May 28 | 87°F | 76°F | 90°F 1953 | 64°F 1952 | 21% | 0% |
| May 29 | 87°F | 76°F | 90°F 1959 | 68°F 1947 | 21% | 0% |
| May 30 | 87°F | 76°F | 91°F 2011 | 67°F 1947 | 21% | 0% |
| May 31 | 87°F | 76°F | 92°F 1948 | 68°F 1997 | 22% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 6:37 AM, sunset 7:56 PM
- May 31
- sunrise 6:20 AM, sunset 8:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00012923 (Galveston Scholes Fld), public domain. Records: NOAA GHCN-Daily, station USW00012923, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.