15.09
tue
tue
Day
59°F
E 4 mph
Precip.
3%
3%
Night
48°F
N 5 mph
Precip.
23%
23%
16.09
wed
wed
Day
61°F
N 9 mph
Precip.
12%
12%
Night
55°F
N 10 mph
Precip.
28%
28%
17.09
thu
thu
Day
63°F
NE 12 mph
Precip.
36%
36%
Night
55°F
NE 9 mph
Precip.
55%
55%
18.09
fri
fri
Day
57°F
NE 11 mph
Precip.
20%
20%
Night
55°F
NE 9 mph
Precip.
29%
29%
19.09
sat
sat
Day
61°F
NE 12 mph
Precip.
54%
54%
Night
52°F
NE 10 mph
Precip.
32%
32%
20.09
sun
sun
Day
55°F
NE 14 mph
Precip.
55%
55%
Night
52°F
NE 14 mph
Precip.
28%
28%
21.09
mon
mon
Day
54°F
SE 16 mph
Precip.
33%
33%
Night
46°F
S 6 mph
Precip.
29%
29%
sea water
temperature
temperature
| St Petersburg |
monthly
weather
weather
| St Petersburg |
current
weather
weather
| St Petersburg |
14 days
forecast
forecast
| St Petersburg |
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 56.8°F. The highest and lowest sea temperatures during the month were 63.0°F and 45.9°F.
Air temperature in St Petersburg, °F
Precipitation total in St Petersburg, in.
* Charts above show average data for the last 3 years.
Best time for vacation in St Petersburg
St Petersburg on a weather map
Places in Russia:
Name
°F
24 Hours Forecast
St Petersburg
Local time: 02:18
September 15, tuesday
0300
46°F
SE
2 mph
2 mph
0600
45°F
SE
2 mph
2 mph
0900
52°F
E
2 mph
2 mph
1200
59°F
E
4 mph
4 mph
1500
59°F
E
5 mph
5 mph
1800
55°F
SE
3 mph
3 mph
2100
50°F
N
2 mph
2 mph
September 16, wednesday
0000
48°F
N
5 mph
5 mph
