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Niigata in May

Find out everything about the water temperature in Niigata 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:

52.8 °F

Average:

59.4 °F

Maximum:

66.9 °F

Sea water temperature in Niigata in May

In the city of Niigata, the month of May is too cold for swimming. The minimum recorded temperature during this month was 52.8°F on May 2, 2022, with an average temperature being 59.4°F and a maximum temperature reaching 66.9°F on May 29, 2019.

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 56.5°F at the beginning of the month, it steadily increases to around 62.6°F by the end.
Date 10 years average 2024 2023
May 1 55.2°F 56.1°F 55.9°F
May 2 55.6°F 56.2°F 55.7°F
May 3 55.7°F 53.7°F 56.2°F
May 4 56.1°F 56.3°F 56.3°F
May 5 56.4°F 59.1°F 57.1°F
May 6 56.9°F 59.2°F 57.4°F
May 7 57.1°F 59.5°F 57.9°F
May 8 57.3°F 59.6°F 58.1°F
May 9 57.4°F 59.7°F 57.0°F
May 10 57.6°F 58.4°F 55.2°F
May 11 57.5°F 58.2°F 56.4°F
May 12 57.9°F 58.7°F 57.5°F
May 13 58.0°F 58.8°F 57.8°F
May 14 57.8°F 58.6°F 58.0°F
May 15 58.5°F 61.2°F 58.2°F
May 16 59.0°F 61.6°F 59.0°F
May 17 59.3°F 61.2°F 60.1°F
May 18 59.7°F 61.4°F 61.8°F
May 19 60.1°F 61.4°F 61.8°F
May 20 60.6°F 61.4°F 62.8°F
May 21 60.8°F 61.4°F 61.9°F
May 22 61.1°F 61.2°F 62.1°F
May 23 61.8°F 61.3°F 62.4°F
May 24 62.3°F 63.3°F 63.3°F
May 25 62.4°F 62.9°F 62.1°F
May 26 62.6°F 62.9°F 60.3°F
May 27 63.0°F 62.6°F 60.7°F
May 28 62.9°F 62.5°F 61.2°F
May 29 63.7°F 61.4°F 61.8°F
May 30 63.8°F 59.2°F 62.3°F
May 31 64.0°F 59.9°F 62.9°F

Sea water temperature in Niigata by month

In Niigata, the months July through September offer comfortable swimming conditions, which amounts to 93 swimming days. The warmest water in Niigata was recorded on August 6, 2023, reaching a 86.6°F. While the coldest temperature occurred on March 16, 2014, dipping to 46.6°F. The average readings by season are 54.5°F in Winter, 53.6°F in Spring, 75.1°F in Summer, and 71.5°F in Autumn. The average temperature in May is slightly warmer than April's average of 52.0°F. And in June, the temperature is expected to rise further, potentially reaching an average of 67.8°F.