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Anchorage in September

Find out everything about the water temperature in Anchorage 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:

48.3 °F

Average:

53.4 °F

Maximum:

58.5 °F

Sea water temperature in Anchorage in September

In the city of Anchorage, the month of September is too cold for swimming. The minimum recorded temperature during this month was 48.3°F on September 30, 2021, with an average temperature being 53.4°F and a maximum temperature reaching 58.5°F on September 1, 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 55.3°F at the beginning of the month, it steadily decreases to around 51.4°F by the end.
Date 10 years average 2024 2023
Sep 1 56.2°F 54.5°F 56.9°F
Sep 2 56.0°F 54.2°F 56.7°F
Sep 3 55.8°F 54.2°F 55.5°F
Sep 4 55.7°F 54.1°F 55.5°F
Sep 5 55.4°F 54.1°F 55.4°F
Sep 6 55.3°F 54.1°F 55.0°F
Sep 7 54.9°F 54.0°F 54.6°F
Sep 8 55.0°F 54.1°F 54.4°F
Sep 9 54.7°F 54.0°F 52.6°F
Sep 10 54.6°F 53.9°F 52.6°F
Sep 11 54.5°F 53.8°F 52.7°F
Sep 12 54.3°F 53.5°F 52.6°F
Sep 13 54.1°F 53.5°F 52.1°F
Sep 14 54.0°F 53.4°F 52.1°F
Sep 15 53.7°F 53.2°F 52.1°F
Sep 16 53.7°F 54.0°F 51.9°F
Sep 17 53.4°F 53.1°F 51.8°F
Sep 18 53.0°F 51.7°F 51.6°F
Sep 19 52.7°F 51.6°F 51.4°F
Sep 20 52.4°F 51.5°F 50.2°F
Sep 21 52.2°F 51.3°F 50.1°F
Sep 22 52.1°F 51.4°F 50.1°F
Sep 23 51.9°F 50.6°F 50.1°F
Sep 24 51.8°F 50.7°F 50.2°F
Sep 25 51.8°F 50.7°F 50.4°F
Sep 26 51.5°F 50.7°F 50.0°F
Sep 27 51.1°F 50.6°F 49.4°F
Sep 28 50.8°F 50.5°F 49.5°F
Sep 29 50.4°F 49.8°F 49.4°F
Sep 30 50.2°F 50.0°F 49.4°F

Sea water temperature in Anchorage by month

In an average year, Anchorage offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Anchorage was recorded on July 11, 2019, reaching a 62.4°F. While the coldest temperature occurred on February 1, 2014, dipping to 32.0°F. The average readings by season are 36.3°F in Winter, 38.1°F in Spring, 56.3°F in Summer, and 45.8°F in Autumn. September's average temperature is a slight drop from August's average of 58.0°F. In October, the temperature is expected to decrease further, potentially averaging around 45.5°F.