Fukuoka — Water Temperature in May

Water Temperature Range

11°C

minimum

17°C

average

21°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2025	2024	2023	2022
MAY 1	15°C	15°C	17°C	16°C
MAY 2	15°C	16°C	16°C	16°C
MAY 3	16°C	16°C	17°C	17°C
MAY 4	15°C	15°C	17°C	17°C
MAY 5	16°C	16°C	18°C	17°C
MAY 6	16°C	16°C	17°C	17°C
MAY 7	16°C	17°C	18°C	17°C
MAY 8	16°C	16°C	18°C	17°C
MAY 9	16°C	16°C	17°C	17°C
MAY 10	16°C	16°C	17°C	17°C
MAY 11	17°C	16°C	18°C	18°C
MAY 12	16°C	16°C	17°C	18°C
MAY 13	17°C	17°C	18°C	18°C
MAY 14	17°C	16°C	18°C	18°C
MAY 15	17°C	16°C	19°C	18°C
MAY 16	17°C	17°C	18°C	18°C
MAY 17	18°C	18°C	19°C	18°C
MAY 18	18°C	17°C	19°C	18°C
MAY 19	18°C	17°C	19°C	18°C
MAY 20	18°C	18°C	19°C	18°C
MAY 21	18°C	17°C	19°C	18°C
MAY 22	18°C	18°C	20°C	18°C
MAY 23	19°C	18°C	19°C	19°C
MAY 24	19°C	18°C	19°C	19°C
MAY 25	19°C	19°C	20°C	19°C
MAY 26	19°C	18°C	19°C	19°C
MAY 27	19°C	18°C	20°C	19°C
MAY 28	19°C	18°C	19°C	19°C
MAY 29	19°C	18°C	20°C	20°C
MAY 30	20°C	19°C	20°C	20°C
MAY 31	20°C	18°C	20°C	20°C

May: Climate and Swimming Opportunities

Average Night Air Temperature

15°C

Average Day Air Temperature

24°C

Precipitation Amount per Month

149 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

6 hrs

Average Wind Speed

11 km/h

Average Humidity

72%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.