Miyakojima — Water Temperature in December

Water Temperature Range

17°C

minimum

21°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

14°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

160 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

3 hrs

Average Wind Speed

12 km/h

Average Humidity

78%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.

Water Temperature in Nearby Locations

Ishigaki