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When is the Best Time to Explore San Antonio?

If you're curious when is the best time of year to visit San Antonio, you may find this information about seasonal weather useful when you are planning your trip. The warmest months in San Antonio are typically September and August, whereas the coldest months are usually January and December. The months with the most rain are April and March, whereas August and July have the least.

Here's a rundown on how much rain you can expect and what the temperatures are going to be like:

• From January to March, the average daytime temperature is 27°C and at night it is 17°C. Seasonal average rainfall is 373 mm.
• If you visit between April and June, you can expect an average temp of 26°C during the day and 17°C at night. Average rainfall during this season is 516 mm.
• The daytime average temp from July to September is 29°C and the night-time average is 17°C. Average precipitation for this season is 143 mm.
• Between October and December, the average temp during the day is 27°C and 17°C at night. Seasonal average rain is 470 mm.
• Average annual rainfall in San Antonio is 1502 mm.