Measurements:
°C
°F
San Antonio
58°F
N 9 mph
Feels like: 56°F
Precip: 0%
World Resorts Chile San Antonio Weather

San Antonio Sea Water Temperature

Current Sea Water Temperature:
+59.6°F
Maximum Sea Water Temperature in February: 69.0°F
Minimum Sea Water Temperature in February: 58.6°F
Average water temperature in February: 63.1°F

Sea Water Temperature for the Last 10 Days:

February 25 59.6°F February 20 59.0°F
February 24 59.6°F February 19 60.6°F
February 23 60.4°F February 18 60.6°F
February 22 60.2°F February 17 60.2°F
February 21 61.0°F February 16 59.6°F

When is the Warmest Sea for San Antonio?

According to our data for the last three years for San Antonio the highest average sea water temperature was in February, January and March.

Average Water Temperature by Month, °F

Sea Water Temperature in February

Select Year: 2026 2025 2024

The average sea surface temperature in February 2026 for San Antonio was 62.6°F. The maximum and minimum values were 58.6°F and 68.6°F respectively.

Sea Water Temperature in January

Select Year: 2026 2025 2024

The average sea surface temperature in January 2026 for San Antonio was 61.5°F. The maximum and minimum values were 54.4°F and 66.6°F respectively.

Sea Water Temperature in March

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for San Antonio was 61.9°F. The maximum and minimum values were 58.0°F and 65.4°F respectively.

Best Time to Visit San Antonio
The most sunny months:
January 29 days
March 28 days
December 28 days
The most warm months:
February 69.9 °F
January 69.1 °F
March 68.8 °F
Warmest sea temperature:
February 63.1 °F
January 61.9 °F
March 61.5 °F
The most cold months:
July 57.1 °F
August 57.3 °F
June 58.3 °F
The most rainy months:
June 3 days
July 2 days
August 2 days
The most windy months:
October 8 mph
September 8 mph
December 8 mph

San Antonio on the Weather Map

24 Hours Weather Forecast
San Antonio
Local time: 02:57
26 feb, thursday
0300 58°F
N
9 mph
0600 58°F
N
9 mph
0900 62°F
N
7 mph
1200 70°F
NE
11 mph
1500 70°F
NE
13 mph
1800 68°F
NE
12 mph
2100 60°F
N
6 mph
27 feb, friday
0000 60°F
N
7 mph