Houston weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: October – April
What is the weather like in Houston in May?
In May, Houston is hot: daytime highs average 29 °C, and even at night it stays warm at around 21 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 103 mm in total. On about 13 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a good month for a holiday in Houston.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 37 min06:29 – 20:06
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 24 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 13 days30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 50 %71 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 30 %57 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Houston in May: quick answers
Is Houston hot in May?
Yes. In May, Houston is hot: daytime highs average 29 °C and nights stay around 21 °C. On about 13 days the thermometer climbs to 30 °C or more.
Does it rain much in Houston in May?
Rain is frequent, with about 10 rainy days and 103 mm in total.
Houston month by month
The whole year in HoustonAll destinations: USAWhere to go 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