Amakusa — Water Temperature in March

Water Temperature Range

14°C

minimum

16°C

average

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

6°C

Average Day Air Temperature

14°C

Precipitation Amount per Month

112 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

5 hrs

Average Wind Speed

14 km/h

Average Humidity

68%

With such a ratio between the average monthly temperatures of water and air, swimming usually feels uncomfortably cold. Even a short dip can leave you chilled, especially once you get out into the cool air.