, about 200 km (125 mi) away from the Gulf of Mexico.
of the coldest month (January) is of 11.2 °C (52 °F), that of the warmest month (August) is of 29.7 °C (86 °F).
amounts to 820 millimeters (32.3 inches) per year. The rainiest seasons are spring and autumn, due to the clash of air masses.
, from December to February, is mild, but there may be variations in temperature. Even in the middle of winter, there can be hot days, with highs of 25 °C (77 °F) and more. In other circumstances, it can get cold at night, and the temperature can drop below freezing.
, which last a few days, during which the temperature can drop to -10 °C (14 °F) or below. The record is -18 °C (0 °F), set in January 1949. After 1980, the lowest values were -14.5 °C (6 °F) in December 1989 and -13 °C (8.5 °F) in February 2021.
in San Antonio is rare. Normally you have to wait a few years between a snowfall with a slight accumulation and another. In December 2017, 5 centimeters (2 inches) of snow fell. In February 2021, snow reached 15 cm (6 in), as it had not happened for decades. The record belongs to January 1985 with 33 cm (13 in).
, from June to September, the combination of high temperature and humidity makes the heat very unpleasant. On the hottest days, it can reach and exceed 40 °C (104 °F). The record is 44 °C (111 °F), set in early September 2000.
, coming from the Gulf of Mexico or the Pacific. In general, hurricanes weaken when they penetrate inland, however, they can still bring abundant rains. The hurricane season runs from June to November, although they are more likely from August to October, with a peak in September.
can occasionally occur in the period April-June (and more rarely in autumn).
To visit San Antonio, you can choose spring and autumn (in particular, from mid-March to mid-April and from mid-October to mid-November), to avoid the summer heat. In winter, there are long mild periods, but some very cold days cannot be excluded.
. Here are the average temperatures.
January, the coldest month of the year, is generally a mild month. The average temperature is of
11.2 °C, with a minimum of
5 °C and a maximum of
17.4 °C.
On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-8.9 °C in January 2010.
On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
30 °C in January 2006.
Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 63%.
The average wind speed is of
12.1 kph.
February is generally a mild month. The average temperature is of
13.5 °C, with a minimum of
7.3 °C and a maximum of
19.7 °C.
On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-8.3 °C in February 2002.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
37.8 °C in February 1996.
Precipitation amounts to
45 mm, distributed over 7 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 63%.
The average wind speed is of
12.9 kph.
March is generally a very mild month. The average temperature is of
17.1 °C, with a minimum of
11 °C and a maximum of
23.2 °C.
On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-7.2 °C in March 2002.
On the warmest days of the month, the temperature usually reaches around
31.5 °C. However, it reached
37.2 °C in March 1991.
Precipitation amounts to
60 mm, distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 64%.
The average wind speed is of
14.4 kph.
April is generally a warm month. The average temperature is of
20.8 °C, with a minimum of
14.7 °C and a maximum of
26.8 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
1.7 °C in April 1996.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
38.3 °C in April 1996.
Precipitation amounts to
60 mm, distributed over 6 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 64%.
The average wind speed is of
15.3 kph.
May is generally a warm to hot month. The average temperature is of
24.7 °C, with a minimum of
19.1 °C and a maximum of
30.3 °C.
On the coldest nights of the month, the temperature usually drops to around
11.5 °C. However, it dropped to
5.6 °C in May 2013.
On the warmest days of the month, the temperature usually reaches around
35.5 °C. However, it reached
40 °C in May 2004.
Precipitation amounts to
110 mm, distributed over 8 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 68%.
The average wind speed is of
15.5 kph.
June is generally a very hot month. The average temperature is of
28.1 °C, with a minimum of
22.6 °C and a maximum of
33.6 °C.
On the coldest nights of the month, the temperature usually drops to around
18.5 °C. However, it dropped to
14.4 °C in June 1995.
On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
42.2 °C in June 2013.
Precipitation amounts to
85 mm, distributed over 7 days.
The day lasts on average 14 hours and 0 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 9 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 66%.
The average wind speed is of
15.2 kph.
July is generally a very hot month. The average temperature is of
29.3 °C, with a minimum of
23.7 °C and a maximum of
34.9 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
17.8 °C in July 2019.
On the warmest days of the month, the temperature usually reaches around
38 °C. However, it reached
41.7 °C in July 2020.
Precipitation amounts to
60 mm, distributed over 5 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 63%.
The average wind speed is of
14.5 kph.
August, the hottest month of the year, is generally a very hot month. The average temperature is of
29.7 °C, with a minimum of
23.8 °C and a maximum of
35.6 °C.
On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
16.1 °C in August 1992.
On the warmest days of the month, the temperature usually reaches around
39 °C. However, it reached
43.3 °C in August 2011.
Precipitation amounts to
55 mm, distributed over 5 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 60%.
The average wind speed is of
13.2 kph.
September is generally a warm to hot month. The average temperature is of
26.6 °C, with a minimum of
20.9 °C and a maximum of
32.3 °C.
On the coldest nights of the month, the temperature usually drops to around
14 °C. However, it dropped to
8.9 °C in September 2000.
On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
43.9 °C in September 2000.
Precipitation amounts to
100 mm, distributed over 7 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 64%.
The average wind speed is of
11.6 kph.
October is generally a warm month. The average temperature is of
21.8 °C, with a minimum of
15.8 °C and a maximum of
27.9 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
-2.8 °C in October 1993.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37.2 °C in October 1991.
Precipitation amounts to
95 mm, distributed over 6 days.
The day lasts on average 11 hours and 25 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 65%.
The average wind speed is of
12.1 kph.
November is generally a very mild month. The average temperature is of
16 °C, with a minimum of
9.9 °C and a maximum of
22.1 °C.
On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-5 °C in November 1993.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
32.8 °C in November 2017.
Precipitation amounts to
55 mm, distributed over 6 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 66%.
The average wind speed is of
12 kph.
December is generally a mild month. The average temperature is of
12 °C, with a minimum of
5.8 °C and a maximum of
18.2 °C.
On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-7.2 °C in December 1996.
On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
30 °C in December 2007.
Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 10 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 64%.
The average wind speed is of
11.6 kph.