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Rui’an in May

Find out everything about the water temperature in Rui’an 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:

65.3 °F

Average:

71.2 °F

Maximum:

78.1 °F

Sea water temperature in Rui’an in May

In the city of Rui’an, the month of May is somewhat comfortable for swimming. The minimum recorded temperature during this month was 65.3°F on May 1, 2016, with an average temperature being 71.2°F and a maximum temperature reaching 78.1°F on May 19, 2018.

While some may find it enjoyable for a brief swim, others might consider it a bit too cold for extended periods in the water. Throughout the month of May, the sea temperature gradually gets warmer. Starting with an average temperature of 68.7°F at the beginning of the month, it steadily increases to around 73.5°F by the end.
Date 10 years average 2025 2024
May 1 67.4°F 66.9°F 68.7°F
May 2 67.8°F 68.7°F 68.9°F
May 3 68.1°F 69.8°F 68.9°F
May 4 68.5°F 69.2°F 69.1°F
May 5 68.6°F 69.2°F 69.1°F
May 6 69.2°F 71.2°F 69.7°F
May 7 69.4°F 71.1°F 69.7°F
May 8 69.4°F 70.9°F 70.3°F
May 9 69.3°F 70.7°F 70.3°F
May 10 69.3°F 70.7°F 70.2°F
May 11 69.3°F 70.7°F 70.3°F
May 12 69.8°F 71.2°F 70.7°F
May 13 70.0°F 71.3°F 71.0°F
May 14 70.5°F 71.5°F 71.5°F
May 15 71.1°F 72.9°F 69.8°F
May 16 71.7°F 73.0°F 69.5°F
May 17 72.0°F 73.9°F 69.9°F
May 18 72.4°F 73.9°F 70.0°F
May 19 72.9°F 73.9°F 71.1°F
May 20 72.9°F 73.9°F 71.2°F
May 21 72.9°F 73.8°F 71.3°F
May 22 73.1°F 75.9°F 71.4°F
May 23 73.1°F 75.8°F 71.6°F
May 24 73.1°F 75.8°F 71.9°F
May 25 73.1°F 75.5°F 71.9°F
May 26 73.1°F 75.3°F 72.6°F
May 27 73.4°F 73.9°F 74.2°F
May 28 73.8°F 73.9°F 75.3°F
May 29 74.0°F 73.8°F 75.1°F
May 30 74.2°F 72.3°F 75.8°F
May 31 74.8°F 73.3°F 75.8°F

Sea water temperature in Rui’an by month

In Rui’an, the months June through October offer comfortable swimming conditions, which amounts to 147 swimming days. The warmest water in Rui’an was recorded on August 11, 2022, reaching a 89.0°F. While the coldest temperature occurred on January 19, 2025, dipping to 48.0°F. The average readings by season are 55.9°F in Winter, 63.6°F in Spring, 82.1°F in Summer, and 74.8°F in Autumn. The average temperature in May is slightly warmer than April's average of 62.9°F. And in June, the temperature is expected to rise further, potentially reaching an average of 77.5°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Wenzhou 74.0°F 15mi
Taizhou 73.8°F 77mi
Jiaojiang 73.7°F 81mi

* current water temperature in this city

** straight line distance from Rui’an