Current sea water temperature:
+64.8°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 18 | 64.8°F | December 13 | 67.1°F |
| December 17 | 65.5°F | December 12 | 68.2°F |
| December 16 | 66.4°F | December 11 | 68.0°F |
| December 15 | 67.8°F | December 10 | 69.4°F |
| December 14 | 67.3°F | December 9 | 70.0°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
December
December
| 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: 15:02
December 18, thursday
1800
73°F
N
16 mph
16 mph
2100
72°F
N
14 mph
14 mph
December 19, friday
0000
72°F
N
15 mph
15 mph
0300
70°F
NE
11 mph
11 mph
0600
72°F
NE
11 mph
11 mph
0900
72°F
E
11 mph
11 mph
1200
73°F
E
12 mph
12 mph
1500
73°F
SE
13 mph
13 mph
