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Härnösand in September

Find out everything about the water temperature in Härnösand 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:

49.6 °F

Average:

55.8 °F

Maximum:

62.3 °F

Sea water temperature in Härnösand in September

In the city of Härnösand, the month of September is too cold for swimming. The minimum recorded temperature during this month was 49.6°F on September 30, 2018, with an average temperature being 55.8°F and a maximum temperature reaching 62.3°F on September 3, 2023.

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 57.9°F at the beginning of the month, it steadily decreases to around 53.4°F by the end.
Date 10 years average 2024 2023
Sep 1 58.6°F 55.1°F 61.9°F
Sep 2 58.4°F 55.6°F 61.7°F
Sep 3 58.2°F 54.5°F 62.3°F
Sep 4 58.1°F 54.7°F 61.9°F
Sep 5 58.0°F 55.1°F 61.9°F
Sep 6 58.0°F 57.4°F 61.3°F
Sep 7 57.8°F 57.8°F 61.1°F
Sep 8 57.6°F 57.5°F 59.7°F
Sep 9 57.3°F 57.3°F 60.0°F
Sep 10 57.2°F 58.1°F 60.7°F
Sep 11 57.2°F 57.5°F 61.9°F
Sep 12 57.1°F 56.9°F 61.0°F
Sep 13 56.9°F 56.5°F 60.8°F
Sep 14 56.6°F 55.7°F 60.5°F
Sep 15 56.3°F 55.5°F 59.6°F
Sep 16 56.1°F 55.4°F 59.0°F
Sep 17 55.9°F 55.4°F 59.2°F
Sep 18 55.7°F 56.0°F 58.5°F
Sep 19 55.2°F 54.8°F 57.7°F
Sep 20 55.1°F 56.2°F 57.5°F
Sep 21 54.6°F 56.5°F 56.6°F
Sep 22 54.3°F 56.2°F 56.0°F
Sep 23 54.0°F 56.0°F 56.0°F
Sep 24 53.7°F 55.7°F 55.2°F
Sep 25 53.5°F 55.2°F 56.3°F
Sep 26 53.3°F 54.4°F 55.3°F
Sep 27 53.0°F 53.2°F 55.0°F
Sep 28 52.8°F 53.3°F 54.7°F
Sep 29 52.5°F 52.6°F 54.4°F
Sep 30 52.1°F 50.9°F 54.3°F

Sea water temperature in Härnösand by month

In an average year, Härnösand offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Härnösand was recorded on July 26, 2014, reaching a 70.9°F. While the coldest temperature occurred on January 24, 2016, dipping to 32.0°F. The average readings by season are 35.2°F in Winter, 36.7°F in Spring, 57.6°F in Summer, and 48.6°F in Autumn. September's average temperature is a slight drop from August's average of 61.1°F. In October, the temperature is expected to decrease further, potentially averaging around 47.9°F.