Current sea water temperature:
+64.8°F
| Minimum sea water temperature in December: | 70.9°F |
| Maximum sea water temperature in December: | 57.9°F |
| Average sea water temperature in December: | 64.9°F |
| more information | |
14 days
forecast
forecast
| St. Augustine |
monthly
weather
weather
| St. Augustine |
Sea water temperature for the last 10 days:
| December 16 | 64.8°F | December 11 | 63.9°F |
| December 15 | 64.8°F | December 10 | 65.1°F |
| December 14 | 64.2°F | December 9 | 66.4°F |
| December 13 | 64.2°F | December 8 | 66.0°F |
| December 12 | 63.9°F | December 7 | 65.7°F |
Monthly sea water temperature, °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.
current
weather
weather
| St. Augustine |
weather in
December
December
| St. Augustine |
Best time for vacation in St. Augustine
St. Augustine on a weather map
Places in USA:
Name
°F
24 Hours Forecast
St. Augustine
Local time: 08:58
December 16, tuesday
0900
48°F
S
8 mph
8 mph
1200
57°F
SW
9 mph
9 mph
1500
59°F
SW
7 mph
7 mph
1800
59°F
S
9 mph
9 mph
2100
59°F
SW
6 mph
6 mph
December 17, wednesday
0000
59°F
NW
2 mph
2 mph
0300
59°F
NW
5 mph
5 mph
0600
57°F
N
3 mph
3 mph
