Current sea water temperature:
+68.5°F
| Minimum sea water temperature in December: | 73.4°F |
| Maximum sea water temperature in December: | 57.7°F |
| Average sea water temperature in December: | 66.8°F |
| more information | |
14 days
forecast
forecast
| St. Petersburg |
monthly
weather
weather
| St. Petersburg |
Sea water temperature for the last 10 days:
| December 30 | 68.5°F | December 25 | 66.9°F |
| December 29 | 68.0°F | December 24 | 66.6°F |
| December 28 | 67.3°F | December 23 | 66.9°F |
| December 27 | 67.5°F | December 22 | 66.2°F |
| December 26 | 67.3°F | December 21 | 66.2°F |
Monthly sea water temperature, °F
When is the warmest sea in St. Petersburg?
Based on the data about daily sea water temperature for the last three years the warmest sea in St. Petersburg was noticed in August, July and September.
Monthly Sea Temperatures in St. Petersburg, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.7°F. The highest and lowest sea temperatures during the month were 91.4°F and 86.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 87.0°F. The highest and lowest sea temperatures during the month were 89.6°F and 85.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.1°F. The highest and lowest sea temperatures during the month were 86.4°F and 81.9°F.
current
weather
weather
| St. Petersburg |
weather in
January
January
| St. Petersburg |
Best time for vacation in St. Petersburg
St. Petersburg on a weather map
Places in USA:
Name
°F
24 Hours Forecast
St. Petersburg
Local time: 18:24
December 30, tuesday
2100
54°F
S
17 mph
17 mph
December 31, wednesday
0000
52°F
S
13 mph
13 mph
0300
48°F
S
13 mph
13 mph
0600
45°F
S
12 mph
12 mph
0900
46°F
SW
11 mph
11 mph
1200
52°F
S
9 mph
9 mph
1500
57°F
SE
11 mph
11 mph
1800
55°F
SE
12 mph
12 mph
