Houston · May
Run in the morning.
Comfortable average high of 84°F, dipping to 69°F at night. Humidity averages 79% — the limiting factor on most runs. Expect 20 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
84° / 69°F
Humidity
79%
Rain days
20/mo
Wind
13 mph
What May feels like in Houston
Sunrise
06:28
Mid-month average
Sunset
20:07
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Houston in May
The kit for May in Houston: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
May vs the surrounding months
vs April
+6° avg high
+2 rain days
Houston in April →
May
84°F avg high
20 rain days
Best: morning
vs June
-5° avg high
0 rain days
Houston in June →
Frequently Asked Questions
What is the best time of day to run in Houston in May?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Houston in May?+
Average high 84°F, average low 69°F.
How does May compare to surrounding months in Houston?+
Compared to April (avg high 77°F), May is warmer. Compared to June (avg high 89°F), May is cooler.
Does it rain often in Houston in May?+
Expect about 20 measurable rain days in May, on average.