San Antonio weather by month

Check out San Antonio weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in San Antonio (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
61°F maximum daytime temperature in January in San Antonio61
66°F maximum daytime temperature in February in San Antonio66
73°F maximum daytime temperature in March in San Antonio73
81°F maximum daytime temperature in April in San Antonio81
86°F maximum daytime temperature in May in San Antonio86
91°F maximum daytime temperature in June in San Antonio91
95°F maximum daytime temperature in July in San Antonio95
95°F maximum daytime temperature in August in San Antonio95
90°F maximum daytime temperature in September in San Antonio90
82°F maximum daytime temperature in October in San Antonio82
72°F maximum daytime temperature in November in San Antonio72
64°F maximum daytime temperature in December in San Antonio64
Min temperature (night-time)
37°F minimum night-time temperature in January in San Antonio37
41°F minimum night-time temperature in February in San Antonio41
50°F minimum night-time temperature in March in San Antonio50
59°F minimum night-time temperature in April in San Antonio59
66°F minimum night-time temperature in May in San Antonio66
72°F minimum night-time temperature in June in San Antonio72
73°F minimum night-time temperature in July in San Antonio73
73°F minimum night-time temperature in August in San Antonio73
70°F minimum night-time temperature in September in San Antonio70
59°F minimum night-time temperature in October in San Antonio59
48°F minimum night-time temperature in November in San Antonio48
41°F minimum night-time temperature in December in San Antonio41
Heat & Humidity
No heat & humidity in January in San Antonio0
No heat & humidity in February in San Antonio0
No heat & humidity in March in San Antonio0
Low heat & humidity in April in San AntonioL
High heat & humidity in May in San AntonioH
Very high heat & humidity in June in San AntonioVH
Very high heat & humidity in July in San AntonioVH
Very high heat & humidity in August in San AntonioVH
High heat & humidity in September in San AntonioH
Low heat & humidity in October in San AntonioL
No heat & humidity in November in San Antonio0
No heat & humidity in December in San Antonio0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in San Antonio

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in San Antonio11
11 hours of daylight per day in February in San Antonio11
12 hours of daylight per day in March in San Antonio12
13 hours of daylight per day in April in San Antonio13
14 hours of daylight per day in May in San Antonio14
14 hours of daylight per day in June in San Antonio14
14 hours of daylight per day in July in San Antonio14
13 hours of daylight per day in August in San Antonio13
12 hours of daylight per day in September in San Antonio12
11 hours of daylight per day in October in San Antonio11
11 hours of daylight per day in November in San Antonio11
10 hours of daylight per day in December in San Antonio10
UV Index (Maximum)
UV (maximum) index 4 (Moderate) in January in San Antonio4
UV (maximum) index 6 (High) in February in San Antonio6
UV (maximum) index 8 (Very High) in March in San Antonio8
UV (maximum) index 10 (Very High) in April in San Antonio10
UV (maximum) index 11 (Extreme) in May in San Antonio11
UV (maximum) index 11 (Extreme) in June in San Antonio11
UV (maximum) index 11 (Extreme) in July in San Antonio11
UV (maximum) index 11 (Extreme) in August in San Antonio11
UV (maximum) index 10 (Very High) in September in San Antonio10
UV (maximum) index 7 (High) in October in San Antonio7
UV (maximum) index 5 (Moderate) in November in San Antonio5
UV (maximum) index 4 (Moderate) in December in San Antonio4

Rainfall in San Antonio

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
7 days with some rainfall in January in San Antonio7
7 days with some rainfall in February in San Antonio7
6 days with some rainfall in March in San Antonio6
7 days with some rainfall in April in San Antonio7
8 days with some rainfall in May in San Antonio8
6 days with some rainfall in June in San Antonio6
5 days with some rainfall in July in San Antonio5
5 days with some rainfall in August in San Antonio5
7 days with some rainfall in September in San Antonio7
6 days with some rainfall in October in San Antonio6
6 days with some rainfall in November in San Antonio6
7 days with some rainfall in December in San Antonio7
Average monthly rainfall (inches)
1.5 inches monthly rainfall in January in San Antonio1.5
2.1 inches monthly rainfall in February in San Antonio2.1
1.5 inches monthly rainfall in March in San Antonio1.5
2.3 inches monthly rainfall in April in San Antonio2.3
3.7 inches monthly rainfall in May in San Antonio3.7
2.9 inches monthly rainfall in June in San Antonio2.9
1.5 inches monthly rainfall in July in San Antonio1.5
2.2 inches monthly rainfall in August in San Antonio2.2
3.5 inches monthly rainfall in September in San Antonio3.5
2.9 inches monthly rainfall in October in San Antonio2.9
2.0 inches monthly rainfall in November in San Antonio2.0
1.5 inches monthly rainfall in December in San Antonio1.5

More about San Antonio

San Antonio by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Texas (San Antonio) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in San Antonio?

San Antonio has a temperate climate with hot summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: San Antonio, Texas hurricane season

% of month affected by tropical storms
0
0
0
0
0
1.2%
<1%
1.3%
2.1%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the USA

Compare San Antonio with the USA

Below the San Antonio chart shows average maximum daytime temperature for San Antonio, Texas, USA and the USA (Washington).

Maximum daytime temperature (°F)

San Antonio, Texas, USA
USA (Washington)
61
41
66
45
73
55
81
66
86
75
91
84
95
88
95
86
90
79
82
68
72
57
64
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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