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Climate · United States

San Antonio

Very hot and mostly dry from June to September; mild and mostly dry from December to February.

Typical weather, averaged over 30 years29.5°N250 m above the sea
  1. Jan66°19°44°7°Rain on about two days a week.
  2. Feb70°21°46°8°Rain on about two days a week.
  3. Mar77°25°53°12°Rain on about two days a week.
  4. Apr83°28°60°16°Rain on about two days a week.
  5. May89°32°67°19°Rain on about three days a week.
  6. Jun95°35°73°23°Rain on about two days a week.
  7. Jul97°36°75°24°Rain on about two days a week.
  8. Aug99°37°76°24°Rain on about two days a week.
  9. Sep93°34°72°22°Rain on about two days a week.
  10. Oct86°30°65°18°Rain on about two days a week.
  11. Nov76°24°55°13°Rain on about two days a week.
  12. Dec68°20°47°8°Rain on about two days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The hot season runs from June to September, with highs near 96°F and nights near 74°F. From December to February, highs are nearer 68°F. The rain comes from May to June, on about three days a week. August is the driest month, with rain on about two days a week. Daylight runs from about 10½ hours in December to 14 hours in June.The hot season runs from June to September, with highs near 36°C and nights near 23°C. From December to February, highs are nearer 20°C. The rain comes from May to June, on about three days a week. August is the driest month, with rain on about two days a week. Daylight runs from about 10½ hours in December to 14 hours in June.

Where San Antonio sits

America/Chicago
this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
29.5°Nnorthern hemisphere
Above the sea
250 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
7:30 AM7:15 AM7:46 AM7:09 AM6:43 AM6:34 AM6:44 AM7:02 AM7:19 AM7:35 AM6:59 AM7:22 AMsets 5:57 PMsets 6:23 PMsets 7:43 PMsets 8:01 PMsets 8:19 PMsets 8:35 PMsets 8:37 PMsets 8:17 PMsets 7:41 PMsets 7:05 PMsets 5:41 PMsets 5:38 PM
Nearest of ours
Houston322 km east

The land around San Antonio, shaded by its typical high in January, the planning map's own layer.The land around San Antonio, shaded by its typical high in February, the planning map's own layer.The land around San Antonio, shaded by its typical high in March, the planning map's own layer.The land around San Antonio, shaded by its typical high in April, the planning map's own layer.The land around San Antonio, shaded by its typical high in May, the planning map's own layer.The land around San Antonio, shaded by its typical high in June, the planning map's own layer.The land around San Antonio, shaded by its typical high in July, the planning map's own layer.The land around San Antonio, shaded by its typical high in August, the planning map's own layer.The land around San Antonio, shaded by its typical high in September, the planning map's own layer.The land around San Antonio, shaded by its typical high in October, the planning map's own layer.The land around San Antonio, shaded by its typical high in November, the planning map's own layer.The land around San Antonio, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 66°F in January to 99°F in August.Highs from 19°C in January to 37°C in August.

Chance of a wet day

Wettest in May (40% of days), driest in August (22%).

Cloud cover

Clearest in October (31% cover), cloudiest in August (50%).

Daylight

From 10h 17m in December to 14h 00m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C
San Antonio, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryCool season
44°7°66°19°
2 days43%10h 29m
FebruaryCool season
46°8°70°21°
2 days44%11h 06m
MarchAt its best
53°12°77°25°
2 days45%11h 57m
April
60°16°83°28°
2 days42%12h 51m
May
67°19°89°32°
3 days40%13h 37m
JuneHot season
73°23°95°35°
2 days35%14h 00m
JulyHot season
75°24°97°36°
2 days48%13h 49m
AugustHot season
76°24°99°37°
2 days50%13h 10m
SeptemberHot season
72°22°93°34°
2 days40%12h 17m
October
65°18°86°30°
2 days31%11h 23m
NovemberAt its best
55°13°76°24°
2 days36%10h 38m
DecemberCool season
47°8°68°20°
2 days42%10h 17m

When is the best time to visit San Antonio?

The best months are March, or November: highs near 76°F, nights near 54°F, and rain on about two days a week.The best months are March, or November: highs near 24°C, nights near 12°C, and rain on about two days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions

What is the warmest month in San Antonio?

August, with highs near 99°F and lows near 76°F. The coolest is January, with highs near 66°F.August, with highs near 37°C and lows near 24°C. The coolest is January, with highs near 19°C.

When does it rain most in San Antonio?

May, with rain on about three days a week. August is the driest, with rain on about two days a week.

How long are the days in San Antonio?

From about 10½ hours in December to 14 hours in June.

When are the skies clearest in San Antonio?

October, when cloud covers about 31% of the sky on average. August is the cloudiest, at about 50%.

Places with a year like San Antonio's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to San Antonio's through the year, one place a country. “Six months apart”: their winter is San Antonio's summer.

Elsewhere in United States

All of United States

Where to stay

1 in our collection
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Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest San Antonio. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.