Measurements:
°C
°F
San Antonio
60°F
SW 2 mph
Feels like: 60°F
Precip: 0%
World Resorts Chile San Antonio Weather

San Antonio Sea Water Temperature

Current Sea Water Temperature:
+61.8°F
Maximum Sea Water Temperature in March: 67.2°F
Minimum Sea Water Temperature in March: 53.0°F
Average water temperature in March: 61.5°F

Sea Water Temperature for the Last 10 Days:

March 19 61.8°F March 14 63.2°F
March 18 60.8°F March 13 63.6°F
March 17 61.8°F March 12 65.0°F
March 16 62.8°F March 11 64.2°F
March 15 62.2°F March 10 63.4°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 62.5°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: 2026 2025 2024

The average sea surface temperature in March 2026 for San Antonio was 62.0°F. The maximum and minimum values were 59.4°F and 65.0°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 70.1 °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: 03:54
20 mar, friday
0600 60°F
N
2 mph
0900 62°F
N
9 mph
1200 60°F
NE
12 mph
1500 58°F
N
9 mph
1800 58°F
NW
2 mph
2100 60°F
N
7 mph
21 mar, saturday
0000 58°F
N
9 mph
0300 58°F
N
8 mph