San Marcos Weather Year-Round — Best Time to Visit
San Marcos, United States has mild weather year-round. The best time to visit is August (score: 96/100). Annual average high: 21.5°C, total rainfall: 354mm.
When is the best time to visit San Marcos?
96
August is the best month to visit San Marcos with a travel score of 96/100 (Excellent).
Expect highs of 27.4°C, 0 rain days, and 12.7 hours of daily sunshine.
View August weather details →Travel Score by Month
75
Jan
75
Feb
78
Mar
84
Apr
88
May
94
Jun
95
Jul
96
Aug
95
Sep
93
Oct
86
Nov
76
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in San Marcos each month?
21.5°C
Avg High
11.8°C
Avg Low
354mm
Annual Rain
How much rain does San Marcos get?
San Marcos receives 354mm of rain annually. The wettest month is typically February with 82mm, while July is the driest.
What is the weather like each month in San Marcos?
January
75
17°C
Low: 6°C
6 rain days
Good
February
75
17°C
Low: 7°C
6 rain days
Good
March
78
18°C
Low: 8°C
6 rain days
Good
April
84
19°C
Low: 10°C
4 rain days
Excellent
May
88
21°C
Low: 13°C
2 rain days
Excellent
June
94
24°C
Low: 15°C
1 rain days
Excellent
July
95
26°C
Low: 17°C
0 rain days
Excellent
August
Best time to visit96
27°C
Low: 18°C
0 rain days
Excellent
September
95
27°C
Low: 17°C
1 rain days
Excellent
October
93
24°C
Low: 14°C
2 rain days
Excellent
November
86
20°C
Low: 9°C
3 rain days
Excellent
December
76
17°C
Low: 6°C
5 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31