Toyama — Water Temperature in May

Water Temperature Range

10°C

minimum

15°C

average

19°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

10°C

Average Day Air Temperature

24°C

Precipitation Amount per Month

86 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

6 hrs

Average Wind Speed

9 km/h

Average Humidity

67%

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.