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San Antonio Weather and Climate: A Comprehensive Guide

The temperature in San Antonio can vary greatly throughout the year. The temperatures shift from very warm to mild. San Antonio has a dry climate with relatively low precipitation levels. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from very warm to moderate in San Antonio. Average maximum daytime temperatures range from a very warm 31°C in August, the warmest time of the year, to a moderate 16°C during cooler months like February.

At night, temperatures typically drop to an average of around 11°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

With annual rainfall averaging 350 mm, San Antonio maintains relatively low precipitation levels throughout the seasons. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, November receives moderate rainfall, averaging 51 mm of precipitation, recorded across 11 rainy days. In contrast, the drier season, July brings less rainfall, with 3.3 mm over 3 rainy days. For more details, please visit our San Antonio Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in San Antonio. While July receives considerable daily sunshine with up to 11.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.1 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Ibiza, Spain (14 KM, 8 Miles).

Daily hours of sunshine

Data from: Ibiza, Spain (14 KM, 8 Miles).

Average water temperature

The mean water temperature over the year ranges from 14°C in February to 26°C in August.

Water temperature over the year

Data from: Ibiza, Spain (14 KM, 8 Miles).

Forecast for San Antonio

Sat   Dec 21
16°C | 3°C
NW 4 m/s
almost clear and no rain

almost clear and no rain

Sun   Dec 22
17°C | 9°C
W 6 m/s
clear and no rain

clear and no rain

Mon   Dec 23
17°C | 10°C
NW 8 m/s
clear and no rain

clear and no rain

The best time of year to visit San Antonio in Spain

During the months of April, May, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does San Antonio have a dry season?
    Yes, the months of June, July and August are very dry.
  • Which is the warmest month in San Antonio?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in San Antonio?
    The coldest month is February with an average maximum temperature of 16°C.
  • Which is the wettest month in San Antonio?
    November tops the wettest month list with 51 mm of rainfall.
  • Which is the driest month in San Antonio?
    July is the driest month with 3 mm of precipitation.
  • Which is the sunniest month in San Antonio?
    July is the sunniest month with an average of 340 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.