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Ruhnu in May

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

36.9 °F

Average:

47.0 °F

Maximum:

63.5 °F

Sea water temperature in Ruhnu in May

In the city of Ruhnu, the month of May is too cold for swimming. The minimum recorded temperature during this month was 36.9°F on May 1, 2018, with an average temperature being 47.0°F and a maximum temperature reaching 63.5°F on May 29, 2024.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. Throughout the month of May, the sea temperature gradually gets warmer. Starting with an average temperature of 42.1°F at the beginning of the month, it steadily increases to around 51.7°F by the end.
Date 10 years average 2024 2023
May 1 40.8°F 41.2°F 42.4°F
May 2 40.9°F 40.9°F 41.4°F
May 3 41.1°F 40.9°F 41.8°F
May 4 41.3°F 43.6°F 42.0°F
May 5 41.9°F 45.4°F 42.6°F
May 6 42.1°F 45.2°F 42.3°F
May 7 42.7°F 44.0°F 42.7°F
May 8 42.7°F 44.3°F 42.6°F
May 9 43.8°F 44.8°F 46.4°F
May 10 43.9°F 43.4°F 46.2°F
May 11 44.5°F 44.0°F 48.6°F
May 12 44.9°F 44.3°F 51.6°F
May 13 45.6°F 45.0°F 54.6°F
May 14 46.3°F 45.7°F 56.8°F
May 15 47.1°F 49.7°F 59.2°F
May 16 47.7°F 51.3°F 58.8°F
May 17 48.0°F 54.2°F 57.3°F
May 18 47.9°F 55.5°F 54.1°F
May 19 47.6°F 56.3°F 51.3°F
May 20 48.2°F 57.5°F 51.6°F
May 21 48.7°F 54.6°F 52.4°F
May 22 49.4°F 53.3°F 49.8°F
May 23 50.5°F 52.9°F 54.2°F
May 24 51.1°F 53.7°F 57.7°F
May 25 52.2°F 55.0°F 60.5°F
May 26 52.2°F 55.3°F 57.0°F
May 27 52.4°F 57.3°F 55.1°F
May 28 52.4°F 60.3°F 54.0°F
May 29 53.1°F 63.5°F 54.1°F
May 30 53.1°F 61.6°F 54.0°F
May 31 53.6°F 62.1°F 55.4°F

Sea water temperature in Ruhnu by month

In an average year, Ruhnu offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Ruhnu was recorded on July 17, 2021, reaching a 77.4°F. While the coldest temperature occurred on February 3, 2014, dipping to 32.0°F. The average readings by season are 37.5°F in Winter, 39.4°F in Spring, 63.6°F in Summer, and 54.4°F in Autumn. The average temperature in May is slightly warmer than April's average of 37.1°F. And in June, the temperature is expected to rise further, potentially reaching an average of 58.4°F.