San Antonio Weather

San Antonio is an ideal holiday destination for sun worshippers for much of the year, with over 300 days of sunshine and not many wet days. The climate is classed as moderate, although most summer days are boiling hot and nights are fairly cool.

Hot summers

The best time to visit San Antonio is perhaps during the spring and autumn seasons, when the sun is not too brutal and daytime temperatures average about 25C to 27C. Make sure you get a hotel with air-conditioning from June to September, as temperatures rise to the mid-30s (C).

Mild season

Even in mid-winter, temperatures are still mild, although nights can get chilly. With moderate temperatures in the winter, its still possible to partake in most of the activities and attractions around town.

Average Temperature (°C)

90 68 45 22 0

Jan 9.6

Feb 11.9

Mar 16.5

Apr 20.7

May 24.1

Jun 27.8

Jul 29.4

Aug 29.3

Sep 26.2

Oct 21.2

Nov 15.7

Dec 11.2

Rainfall (mm)

110 82 55 28 0

Jan 41.6

Feb 44.1

Mar 44.1

Apr 74.1

May 101.9

Jun 78.3

Jul 53.6

Aug 54.9

Sep 82.8

Oct 71.6

Nov 50.0

Dec 45.1