Best Time to Visit Houston
The best time to visit Houston is March to June and September to November, when the average temperature is 16–28°C and rainfall is low for Houston, at 85–128 mm a month.
Houston weather by month
The wettest month in Houston is October with 128 mm of rain, and the warmest is August at an average 29°C. The coolest is January at 10°C.
| Month | Average temperature | Rainfall | Verdict |
|---|---|---|---|
| January | 10°C / 51°F | 89 mm | Cool |
| February | 13°C / 55°F | 69 mm | Cool |
| March | 17°C / 62°F | 85 mm | Best |
| April | 20°C / 69°F | 87 mm | Best |
| May | 25°C / 76°F | 119 mm | Best |
| June | 28°C / 82°F | 126 mm | Best |
| July | 29°C / 83°F | 110 mm | Hot |
| August | 29°C / 84°F | 125 mm | Hot |
| September | 26°C / 79°F | 118 mm | Best |
| October | 21°C / 71°F | 128 mm | Best |
| November | 16°C / 61°F | 94 mm | Best |
| December | 12°C / 53°F | 96 mm | Cool |
How we pick the best months
- Best: an average temperature of 15–28°C and low rainfall for Houston: under 150 mm, and no more than 129 mm, a quarter above Houston's median month (never set below 60 mm).
- If no month qualifies, we show the three driest months that average 10–30°C instead.
- Wet: 150 mm of rain or more. Rainy: more than 129 mm. Hot: 29°C or more on average. Cool: under 15°C. Cold: under 5°C.
Averages cover day and night, so afternoons are warmer than the figure shown. Weather is only one reason to pick a month: school holidays, festivals and prices matter too.
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Where these numbers come from
Monthly averages for January 2001 – December 2020 from the NASA POWER project, for the area around George Bush Intercontinental (IAH) at 29.98, -95.34. The model covers a grid about 50 km across, so a coastal or hilly spot can run a degree or two different. Retrieved 12 September 2026.
The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) Prediction of Worldwide Energy Resource (POWER) Project funded through the NASA Earth Science/Applied Science Program.