Measurements:
°C
°F
CURRENT WEATHER
09:42
St. Petersburg
86°F
W 12 mph
Feels like: 94°F
Precip: 64%
World Resorts USA St. Petersburg Weather

7 Day Weather Forecast

09.15
tue
DAY
90°F
W 9 mph
precip
6%
NIGHT
86°F
W 21 mph
precip
21%
09.16
wed
DAY
88°F
SW 19 mph
precip
8%
NIGHT
84°F
SW 20 mph
precip
4%
09.17
thu
DAY
86°F
SW 16 mph
precip
13%
NIGHT
84°F
W 19 mph
precip
43%
09.18
fri
DAY
88°F
W 12 mph
precip
7%
NIGHT
82°F
NW 11 mph
precip
6%
09.19
sat
DAY
88°F
W 11 mph
precip
13%
NIGHT
88°F
NW 9 mph
precip
18%
09.20
sun
DAY
88°F
NW 6 mph
precip
29%
NIGHT
84°F
NW 16 mph
precip
44%
09.21
mon
DAY
86°F
NW 6 mph
precip
22%
NIGHT
84°F
NW 14 mph
precip
40%

St. Petersburg Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for St. Petersburg was 30.7°F. The maximum and minimum values were 30.2°F and 31.0°F respectively.

St. Petersburg on the Weather Map

Best Time to Visit St. Petersburg
The most sunny months:
May 20 days
March 20 days
April 20 days
The most warm months:
July 92.2 °F
August 91.8 °F
June 90.6 °F
Warmest sea temperature:
August 91.5 °F
July 91.5 °F
June 89.1 °F
The most cold months:
January 66.0 °F
February 70.5 °F
December 70.5 °F
The most rainy months:
August 4 days
July 4 days
September 4 days
The most windy months:
April 12 mph
November 12 mph
October 12 mph
more details