Houston weather in August
Houston in August averages 29°C (85°F) and 122 mm of rain.
Of the twelve months in Houston, August is the warmest and the fourth wettest.
- Average temp
- 29°C (85°F)
24–35°C · 75–95°F
- Rainfall
- 122 mm
Showers likely
- Sunshine
- —
- Wind
- 9 km/h
What is Houston like in August?
Daytime
Days are hot, often above 32°C.
Rain
Some rain is likely; pack for showers.
Evening
Evenings stay warm.
What should I pack for Houston in August?
High-factor sun cream
With daytime highs around 35°C, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A light rain jacket
About 122 mm falls this month — showers rather than washouts.
A layer for the evening
The day swings about 11°C between its low and its high.
August compared with July and September
August in Houston is about the same temperature as July and 28 mm wetter than it, which averages 29°C (85°F).
August in Houston is 2.6°C warmer than September and 12 mm wetter than it, which averages 27°C (80°F).
Daylight in Houston in August
On 15 August the sun is up for 13 hours 12 minutes in Houston, rising about 06:49 and setting about 20:01 local time.
August ends 47 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 51 minutes short of June, the longest-lit month here.
Where to stay in Houston
Dates are a starting point for August.
Travel guides for Houston
What to read before you book.
Houston weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 12°C / 53°F | 96 mm |
| February | 14°C / 57°F | 74 mm |
| March | 18°C / 64°F | 89 mm |
| April | 21°C / 70°F | 101 mm |
| May | 25°C / 77°F | 130 mm |
| June | 28°C / 83°F | 151 mm |
| July | 29°C / 85°F | 94 mm |
| August | 29°C / 85°F | 122 mm |
| September | 27°C / 80°F | 110 mm |
| October | 22°C / 72°F | 139 mm |
| November | 17°C / 62°F | 98 mm |
| December | 13°C / 55°F | 103 mm |
Check another month
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FAQs about Houston in August
August climate averages for Houston, 1991–2020.
Houston averages 29°C (85°F) in August, ranging from about 24°C (75°F) at night to 35°C (95°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 122 mm falls across August, enough to need a light jacket but not enough to reshape a trip.
Yes. August averages 29°C (85°F) against 27°C (80°F) in September — 2.6°C warmer.
August is about as warm as July, and 28 mm wetter.
It is outside the easiest window. The most comfortable stretch here is March to June; August sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 12 minutes of daylight in mid-August, against 14 hours 3 minutes in June and 10 hours 15 minutes in December.
On 15 August, sunrise is about 06:49 and sunset about 20:01 local time. Both shift across the month — the month ends 47 minutes shorter than it starts.
