Measurements:
°C
°F
St. Petersburg
64°F
NW 7 mph
Feels like: 64°F
Precip: 0%
World Resorts USA St. Petersburg Weather

St. Petersburg Sea Water Temperature

Current Sea Water Temperature:
+70.6°F
Maximum Sea Water Temperature in December: 76.0°F
Minimum Sea Water Temperature in December: 58.6°F
Average water temperature in December: 68.5°F

Sea Water Temperature for the Last 10 Days:

December 04 70.6°F November 29 73.4°F
December 03 69.0°F November 28 75.4°F
December 02 69.2°F November 27 75.4°F
December 01 68.6°F November 26 75.6°F
November 30 71.4°F November 25 75.0°F

When is the Warmest Sea for St. Petersburg?

According to our data for the last three years for St. Petersburg the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for St. Petersburg was 93.0°F. The maximum and minimum values were 90.0°F and 96.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St. Petersburg was 91.2°F. The maximum and minimum values were 89.0°F and 94.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St. Petersburg was 87.9°F. The maximum and minimum values were 85.4°F and 90.4°F respectively.

Best Time to Visit St. Petersburg
The most sunny months:
May 19 days
March 19 days
April 19 days
The most warm months:
July 91.7 °F
August 91.5 °F
June 89.6 °F
Warmest sea temperature:
August 91.6 °F
July 91.3 °F
September 89.0 °F
The most cold months:
January 65.6 °F
December 69.7 °F
February 70.5 °F
The most rainy months:
July 4 days
September 4 days
August 3 days
The most windy months:
April 12 mph
November 12 mph
October 12 mph

St. Petersburg on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
St. Petersburg
Local time: 02:21
05 dec, friday
0300 64°F
NW
7 mph
0600 64°F
N
8 mph
0900 68°F
N
10 mph
1200 72°F
N
12 mph
1500 74°F
N
14 mph
1800 74°F
N
11 mph
2100 74°F
NE
7 mph
06 dec, saturday
0000 74°F
NE
6 mph