Measurements:
°C
°F
St. Augustine
80°F
NE 8 mph
Feels like: 82°F
Precip: 0%
World Resorts USA St. Augustine Weather

St. Augustine Sea Water Temperature

Current Sea Water Temperature:
+58.2°F
Maximum Sea Water Temperature in February: 70.2°F
Minimum Sea Water Temperature in February: 54.6°F
Average water temperature in February: 61.1°F

Sea Water Temperature for the Last 10 Days:

February 21 58.2°F February 16 58.0°F
February 20 57.2°F February 15 57.2°F
February 19 57.6°F February 14 57.4°F
February 18 58.0°F February 13 58.2°F
February 17 58.4°F February 12 58.2°F

When is the Warmest Sea for St. Augustine?

According to our data for the last three years for St. Augustine the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for St. Augustine was 88.5°F. The maximum and minimum values were 87.4°F and 89.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St. Augustine was 85.3°F. The maximum and minimum values were 82.0°F and 88.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St. Augustine was 84.4°F. The maximum and minimum values were 81.8°F and 88.4°F respectively.

Best Time to Visit St. Augustine
The most sunny months:
October 15 days
April 15 days
March 14 days
The most warm months:
July 92.9 °F
August 92.6 °F
June 91.1 °F
Warmest sea temperature:
August 87.4 °F
September 86.4 °F
July 86.4 °F
The most cold months:
January 64.6 °F
December 68.2 °F
February 70.7 °F
The most rainy months:
July 5 days
September 4 days
August 4 days
The most windy months:
January 7 mph
December 6 mph
October 6 mph

St. Augustine on the Weather Map

USA Resorts:
NAME
Chicago +28
Hawaii +70
Honolulu +70
Houston +74
Las Vegas +42
Los Angeles +48
Maui +66
Miami +86
Miami Beach +78
New York +42
San Diego +50
San Francisco +46
Sarasota +74
Tampa +78
Washington +48
24 Hours Weather Forecast
St. Augustine
Local time: 10:55
21 feb, saturday
1200 80°F
NE
8 mph
1500 86°F
NE
6 mph
1800 84°F
NE
6 mph
2100 78°F
NE
8 mph
22 feb, sunday
0000 72°F
NE
9 mph
0300 66°F
NE
9 mph
0600 66°F
NE
11 mph
0900 64°F
E
12 mph