Nagasaki — Water Temperature in March

Water Temperature Range

13°C

minimum

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