World Resorts USA St. Petersburg Weather

St. Petersburg sea water temperature

Current sea water temperature:
+66.7°F
Minimum sea water temperature in January: 72.0°F
Maximum sea water temperature in January: 52.9°F
Average sea water temperature in January: 63.4°F

Sea water temperature for the last 10 days:

January 10 66.7°F January 5 65.1°F
January 9 66.0°F January 4 63.9°F
January 8 66.2°F January 3 64.0°F
January 7 66.2°F January 2 64.8°F
January 6 65.5°F January 1 66.6°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.

Best time for vacation in St. Petersburg

Sunniest months:
May 19 days
March 19 days
April 19 days
Warmest months:
July 87.5 °F
August 87.4 °F
June 85.6 °F
Warmest sea temp:
August 87.5 °F
July 87.2 °F
September 85.1 °F
Coldest months:
January 64.0 °F
December 68.4 °F
February 68.5 °F
Rainiest months:
July 4 days
September 4 days
August 3 days
Windiest months:
April 12.3 mph
November 12.1 mph
October 12.1 mph

St. Petersburg on a weather map

St. Petersburg
+73°F
NE 9 mph
Feels like: +75°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+77°F
+77°F
+59°F
+70°F
+77°F
+77°F
+70°F
+41°F
+70°F
+55°F
+75°F
+77°F
+55°F
+36°F
24 Hours Forecast
St. Petersburg
Local time: 18:26
January 10, saturday
2100
66°F
E
6 mph
January 11, sunday
0000
66°F
SE
2 mph
0300
64°F
W
2 mph
0600
63°F
NW
2 mph
0900
63°F
W
0 mph
1200
64°F
E
3 mph
1500
66°F
SE
14 mph
1800
66°F
S
20 mph
Units of measurement: °C / °F