San Antonio weather

Our guide to the weather in San Antonio during July

35

Average high

8

UV Index

2mm

Monthly rainfall

32%

Humidity

We've looked at the most up-to-date weather data for San Antonio, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about San Antonio weather in July.

How hot is it in San Antonio during July?

July is typically the hottest month in San Antonio. Expect extreme heat during July, with temperatures hitting 35℃ during the day, falling away to 20℃ at night.The UV index will be very high at this time of year, so you'll need to protect your eyes and skin. Avoid sun exposure between 10am and 4pm where possible. If outdoors, find shade, wear sun-protective clothing, wear UV-blocking sunglasses and generously apply broad spectrum SPF 30+ sunscreen every hour or so. Don't be fooled by cloudy skies! Remember that bright surfaces, such as water and sand will increase UV exposure.

Does it rain in San Antonio during July?

The answer is no. San Antonio is typically bone dry in July. You're not likely to see a thunderstorm during your trip.

Is it windy in San Antonio during July?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in July. With moderate humidity, any breeze will have a very welcome cooling effect.

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Weather in San Antonio

Our month-by-month guide to the weather and climate in San Antonio

12.0

San Antonio weather in

January
13.6

San Antonio weather in

February
16.2

San Antonio weather in

March
19.6

San Antonio weather in

April
25.3

San Antonio weather in

May
30.7

San Antonio weather in

June
35.4

San Antonio weather in

July
35.2

San Antonio weather in

August
29.4

San Antonio weather in

September
24.4

San Antonio weather in

October
16.3

San Antonio weather in

November
13.8

San Antonio weather in

December