Current sea water temperature:
+59.4°F
| Minimum sea water temperature in December: | 69.1°F |
| Maximum sea water temperature in December: | 55.4°F |
| Average sea water temperature in December: | 63.2°F |
| more information | |
14 days
forecast
forecast
| Jacksonville |
monthly
weather
weather
| Jacksonville |
Sea water temperature for the last 10 days:
| December 25 | 59.4°F | December 20 | 60.1°F |
| December 24 | 59.7°F | December 19 | 59.2°F |
| December 23 | 60.6°F | December 18 | 58.6°F |
| December 22 | 60.3°F | December 17 | 59.9°F |
| December 21 | 60.4°F | December 16 | 62.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Jacksonville?
Based on the data about daily sea water temperature for the last three years the warmest sea in Jacksonville was noticed in August, September and July.
Monthly Sea Temperatures in Jacksonville, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 84.9°F. The highest and lowest sea temperatures during the month were 86.2°F and 83.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 81.1°F. The highest and lowest sea temperatures during the month were 84.7°F and 78.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 80.4°F. The highest and lowest sea temperatures during the month were 84.7°F and 76.8°F.
current
weather
weather
| Jacksonville |
weather in
December
December
| Jacksonville |
Best time for vacation in Jacksonville
Jacksonville on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Jacksonville
Local time: 12:57
December 25, thursday
1500
84°F
SE
3 mph
3 mph
1800
77°F
E
2 mph
2 mph
2100
70°F
E
2 mph
2 mph
December 26, friday
0000
64°F
SE
4 mph
4 mph
0300
61°F
E
4 mph
4 mph
0600
57°F
E
4 mph
4 mph
0900
55°F
E
4 mph
4 mph
1200
57°F
E
5 mph
5 mph
