Hiroshima — Water Temperature in March

Water Temperature Range

10°C

minimum

13°C

average

15°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	2026	2025	2024	2023
MAR 1	-10°C	12°C	11°C	13°C
MAR 2	12°C	12°C	11°C	13°C
MAR 3	12°C	12°C	11°C	12°C
MAR 4	12°C	13°C	12°C	12°C
MAR 5	11°C	12°C	12°C	12°C
MAR 6	12°C	13°C	12°C	12°C
MAR 7	12°C	13°C	12°C	12°C
MAR 8	12°C	13°C	12°C	13°C
MAR 9	12°C	13°C	12°C	13°C
MAR 10	12°C	12°C	12°C	12°C
MAR 11	12°C	13°C	12°C	12°C
MAR 12	12°C	12°C	11°C	13°C
MAR 13	12°C	12°C	11°C	13°C
MAR 14	11°C	13°C	11°C	12°C
MAR 15	11°C	12°C	12°C	12°C
MAR 16	11°C	12°C	11°C	13°C
MAR 17	11°C	13°C	12°C	13°C
MAR 18	11°C	13°C	12°C	12°C
MAR 19	11°C	13°C	11°C	12°C
MAR 20	11°C	13°C	12°C	12°C
MAR 21	12°C	13°C	12°C	13°C
MAR 22	12°C	12°C	11°C	12°C
MAR 23	12°C	13°C	11°C	12°C
MAR 24	12°C	12°C	11°C	13°C
MAR 25	12°C	12°C	11°C	12°C
MAR 26	12°C	12°C	11°C	13°C
MAR 27	12°C	13°C	12°C	13°C
MAR 28	13°C	13°C	12°C	13°C
MAR 29	13°C	13°C	12°C	13°C
MAR 30	13°C	13°C	13°C	13°C
MAR 31	13°C	13°C	13°C	14°C

March: Climate and Swimming Opportunities

Average Night Air Temperature

4°C

Average Day Air Temperature

13°C

Precipitation Amount per Month

130 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

5 hrs

Average Wind Speed

13 km/h

Average Humidity

68%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.