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Climate · Houston

Houston in May

Hot and damp, as the days lengthen.

Typical weather, averaged over 30 years

May in Houston is hot: highs near 88°F, lows near 69°F. Rain falls on about three days a week, and the days lengthen by 34 minutes from the first week to the last.May in Houston is hot: highs near 31°C, lows near 21°C. Rain falls on about three days a week, and the days lengthen by 34 minutes from the first week to the last.

High
88°F31°Caverage
Low
69°F21°Caverage
Wet days
3a week · 36% of days
Daylight
13h 38mon average

Is May a good time to visit Houston?

May sits outside Houston's best months, which run in two parts: March to April, or November. Expect hot days and rain on about three days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How May sits in the year

week by week

Temperature

Highs near 88°F in May, against 66°F to 96°F through the year.Highs near 31°C in May, against 19°C to 36°C through the year.

Chance of a wet day

36% of days in May, against 31% to 46% through the year.

Cloud cover

42% cover in May, against 32% to 52% through the year.

Daylight

13h 38m in May, against 10h 16m to 14h 01m through the year.

Week by week, lightly smoothed, with May shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. April81°27°low 61°low 16°2 wet days a weekRain on about two days a week.
  2. May88°31°low 69°low 21°3 wet days a weekRain on about three days a week.
  3. June93°34°low 75°low 24°3 wet days a weekRain on about three days a week.

Where Houston sits, in May

America/Chicago
this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
6:29 AMsets 8:06 PM
Above the sea
10 mlow-lying
Latitude
29.8°Nnorthern hemisphere
Nearest of ours
San Antonio322 km west

The land around Houston, shaded by its typical high in May, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in May

high · low · wet days
See May on the planning mapThe whole year in Houston

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Houston. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.