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San Antonio weather in August 2025
Expect 95°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in San Antonio in August. Check more long-term weather averages for San Antonio in August before you book your next holiday to Texas in 2025/2026.
- 95°F max day temperature
95 - 9 hours of sunshine per day
- 5 days with some rainfall
5 - 73°F min night temperature
73 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 2.2 inches of monthly rainfall
2.2 - 11 (Extreme) UV index
11
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Expires at 23:59 on Tuesday 3rd Dec 2024
The August weather guide for Texas (San Antonio) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C) | Imperial (°F)
More about the USA
How hot is it in San Antonio in August?
Daytime temperatures usually reach 95°F in San Antonio in August with very high heat and humidity, falling to 73°F at night.
How sunny is it in San Antonio in August?
There are normally 9 hours of bright sunshine each day in San Antonio in August - that's 71% of daylight hours.
Does it rain in San Antonio in August?
There are usually 5 days with some rain in San Antonio in August and the average monthly rainfall is 2.2 inches.
What is the chance of a hurricane in San Antonio in August?
On average less than 1 day in August in San Antonio is likely to be affected by the passage of one or more tropical storms.
San Antonio August sunrise & sunset times
Browse the sunrise and sunset times for San Antonio in August 2025. Select a month to view San Antonio sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:54 | 19:26 |
| Saturday, 16th August 2025 | 06:03 | 19:13 |
| Sunday, 31st August 2025 | 06:11 | 18:57 |
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