Annual mean 13°C · wettest around June · prevailing wind W
Warmest
21.0 °C
Coldest
13.2 °C
Wettest
15%
Windiest
6.6 m/s
Prevailing
W
5.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in San Antonio over the whole year is 13°C. February is the hottest month, with highs of about 21°C; July is the coldest, with lows of about 7°C. San Antonio has no sharply defined rainy season: the chance of rain on a given day runs from 0% in February, the driest month, to 11% in June, the wettest. Winds in San Antonio are highest in December, averaging 3.6 m/s (13 km/h), and lightest in May, at 2.6 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in San Antonio come in February, when the sky is typically 42% covered; June is the cloudiest month, at 61%.
Month by month San Antonio climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
21°C
14°C
18°C
0%
44%
3.4 m/s
73
10
80
February
21°C
14°C
18°C
0%
42%
3.2 m/s
76
12
77
March
20°C
13°C
16°C
2%
46%
3.3 m/s
67
6
81
April
17°C
11°C
14°C
2%
54%
3.0 m/s
47
1
86
May
16°C
9°C
13°C
6%
58%
2.6 m/s
36
1
85
June
14°C
8°C
11°C
11%
61%
3.2 m/s
20
0
78
July
14°C
7°C
10°C
6%
55%
3.1 m/s
16
0
75
August
14°C
7°C
10°C
6%
51%
3.5 m/s
15
0
76
September
15°C
9°C
11°C
3%
55%
3.1 m/s
18
0
80
October
16°C
10°C
12°C
2%
51%
3.1 m/s
24
2
84
November
18°C
11°C
14°C
1%
43%
3.5 m/s
38
5
81
December
19°C
13°C
16°C
0%
42%
3.6 m/s
54
7
82
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short San Antonio weather by season
Year round, San Antonio has days of about 14°C at their warmest in July, its coolest month, and 21°C in February, its warmest; the coolest hours of the day run from 7°C to 14°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around June and least likely around February. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
San Antonio weather in winterJune to August
High 14°CLow 7°CRain 8%
Winter in San Antonio has typical daily highs of about 14°C and lows of about 7°C, with a 8% chance of rain on a given day.
San Antonio weather in springSeptember to November
High 17°CLow 10°CRain 2%
Spring in San Antonio has typical daily highs of about 17°C and lows of about 10°C, with a 2% chance of rain on a given day.
San Antonio weather in summerDecember to February
High 20°CLow 14°CRain 0%
Summer in San Antonio has typical daily highs of about 20°C and lows of about 14°C, with a 0% chance of rain on a given day.
San Antonio weather in autumnMarch to May
High 18°CLow 11°CRain 4%
Autumn in San Antonio has typical daily highs of about 18°C and lows of about 11°C, with a 4% chance of rain on a given day.
When is the rainy season in San Antonio?
San Antonio has no sharply defined rainy season: the chance of rain on a given day runs from 0% in February, the driest month, to 11% in June, the wettest.
What time of year is San Antonio windiest?
Winds in San Antonio are highest in December, averaging 3.6 m/s (13 km/h), and lightest in May, at 2.6 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in San Antonio year round?
The average temperature in San Antonio over the whole year is 13°C. February is the hottest month, with highs of about 21°C; July is the coldest, with lows of about 7°C.