World Resorts USA St. Augustine Weather

St. Augustine sea water temperature

Current sea water temperature:
+63.5°F
Minimum sea water temperature in January: 68.2°F
Maximum sea water temperature in January: 52.0°F
Average sea water temperature in January: 61.5°F

Sea water temperature for the last 10 days:

January 12 63.5°F January 7 61.7°F
January 11 63.7°F January 6 62.1°F
January 10 62.8°F January 5 61.9°F
January 9 62.2°F January 4 61.7°F
January 8 62.4°F January 3 61.9°F

When is the warmest sea in St. Augustine?

Based on the data about daily sea water temperature for the last three years the warmest sea in St. Augustine was noticed in August, September and July.

Monthly Sea Temperatures in St. Augustine, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.5°F and 83.7°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 81.8°F. The highest and lowest sea temperatures during the month were 84.7°F and 78.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 84.6°F and 78.6°F.

Best time for vacation in St. Augustine

Sunniest months:
October 15 days
April 15 days
March 14 days
Warmest months:
July 88.6 °F
August 88.3 °F
June 87.0 °F
Warmest sea temp:
August 83.6 °F
September 82.8 °F
July 82.8 °F
Coldest months:
January 63.6 °F
December 66.3 °F
February 68.6 °F
Rainiest months:
July 5 days
September 4 days
August 4 days
Windiest months:
December 6.8 mph
October 6.8 mph
January 6.7 mph

St. Augustine on a weather map

St. Augustine
+52°F
S 14 mph
Feels like: +48°F
Precip.: 0%
Places in USA:
Name
°F
+34°F
+72°F
+72°F
+52°F
+61°F
+66°F
+75°F
+66°F
+30°F
+59°F
+50°F
+59°F
+55°F
+50°F
+34°F
24 Hours Forecast
St. Augustine
Local time: 00:01
January 13, tuesday
0300
54°F
S
12 mph
0600
54°F
S
11 mph
0900
55°F
S
10 mph
1200
57°F
S
10 mph
1500
61°F
S
10 mph
1800
59°F
SW
9 mph
2100
57°F
SW
4 mph
January 14, wednesday
0000
57°F
E
1 mph
Units of measurement: °C / °F