Current sea water temperature:
+85.5°F
| Minimum sea water temperature in September: | 87.8°F |
| Maximum sea water temperature in September: | 81.9°F |
| Average sea water temperature in September: | 85.3°F |
| more information | |
14 days
forecast
forecast
| St. Petersburg |
monthly
weather
weather
| St. Petersburg |
Sea water temperature for the last 10 days:
| September 19 | 85.5°F | September 14 | 87.1°F |
| September 18 | 86.2°F | September 13 | 87.1°F |
| September 17 | 87.1°F | September 12 | 87.3°F |
| September 16 | 87.3°F | September 11 | 87.4°F |
| September 15 | 87.3°F | September 10 | 87.1°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 86.7°F. The highest and lowest sea temperatures during the month were 88.9°F and 84.9°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 87.9°F. The highest and lowest sea temperatures during the month were 89.2°F and 85.1°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 87.0°F. The highest and lowest sea temperatures during the month were 87.8°F and 85.5°F.
current
weather
weather
| St. Petersburg |
weather in
September
September
| 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: 05:20
September 19, saturday
0600
79°F
W
9 mph
9 mph
0900
79°F
W
9 mph
9 mph
1200
82°F
W
7 mph
7 mph
1500
84°F
W
1 mph
1 mph
1800
86°F
S
2 mph
2 mph
2100
86°F
W
9 mph
9 mph
September 20, sunday
0000
82°F
W
12 mph
12 mph
0300
81°F
W
12 mph
12 mph
