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Saint Petersburg in September

Find out everything about the water temperature in Saint Petersburg in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:

47.6 °F

Average:

56.6 °F

Maximum:

64.5 °F

Sea water temperature in Saint Petersburg in September

In the city of Saint Petersburg, the month of September is too cold for swimming. The minimum recorded temperature during this month was 47.6°F on September 30, 2021, with an average temperature being 56.6°F and a maximum temperature reaching 64.5°F on September 3, 2019.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. Throughout the month of September, the sea temperature gradually gets colder. Starting with an average temperature of 59.2°F at the beginning of the month, it steadily decreases to around 53.6°F by the end.
Date 10 years average 2023 2022
Sep 1 61.2°F 64.0°F 61.7°F
Sep 2 60.9°F 63.4°F 61.3°F
Sep 3 60.2°F 63.0°F 58.5°F
Sep 4 58.9°F 59.6°F 55.5°F
Sep 5 58.8°F 60.3°F 54.6°F
Sep 6 58.9°F 60.4°F 54.1°F
Sep 7 58.7°F 59.7°F 54.1°F
Sep 8 58.7°F 60.1°F 52.2°F
Sep 9 58.5°F 57.8°F 52.7°F
Sep 10 57.7°F 55.5°F 50.3°F
Sep 11 58.4°F 60.4°F 51.0°F
Sep 12 58.4°F 59.3°F 51.5°F
Sep 13 58.2°F 60.2°F 52.8°F
Sep 14 58.0°F 60.7°F 53.6°F
Sep 15 57.4°F 60.1°F 53.0°F
Sep 16 56.8°F 59.1°F 53.0°F
Sep 17 56.2°F 59.4°F 52.8°F
Sep 18 55.6°F 56.6°F 53.2°F
Sep 19 55.3°F 56.0°F 53.9°F
Sep 20 54.9°F 57.6°F 53.6°F
Sep 21 54.8°F 57.1°F 53.6°F
Sep 22 54.6°F 57.1°F 53.1°F
Sep 23 54.5°F 58.8°F 53.1°F
Sep 24 54.4°F 58.1°F 53.1°F
Sep 25 53.9°F 54.7°F 53.2°F
Sep 26 53.6°F 55.1°F 52.8°F
Sep 27 53.5°F 55.8°F 52.4°F
Sep 28 53.0°F 55.4°F 51.1°F
Sep 29 52.1°F 54.5°F 50.8°F
Sep 30 51.6°F 54.2°F 50.3°F

Sea water temperature in Saint Petersburg by month

In an average year, Saint Petersburg offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Saint Petersburg was recorded on July 17, 2021, reaching a 76.5°F. While the coldest temperature occurred on January 2, 2016, dipping to 32.0°F. The average readings by season are 32.7°F in Winter, 39.1°F in Spring, 62.9°F in Summer, and 47.1°F in Autumn. September's average temperature is a slight drop from August's average of 64.6°F. In October, the temperature is expected to decrease further, potentially averaging around 46.1°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kalininskiy 48.3°F 5mi
Lomonosov 51.6°F 19mi
Zelenogorsk 49.6°F 28mi

* current water temperature in this city

** straight line distance from Saint Petersburg