Sea Temperature in Sumoto in December

Complete information on the sea temperature range in the Seto Inland Sea in Sumoto in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Sumoto. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Sumoto in December

14°C

MINIMUN

17°C

AVERAGE

20°C

MAXIMUM

Historical Data of Water Temperature in December in Sumoto

Water Temperature Chart for Seto Inland Sea in Sumoto in December

Sea Temperature Table in Sumoto in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	19°C	19°C	19°C	18.8°C
Dec 2	19°C	19°C	19°C	18.5°C
Dec 3	19°C	18°C	19°C	18.3°C
Dec 4	19°C	18°C	19°C	18.5°C
Dec 5	19°C	18°C	19°C	18.5°C
Dec 6	19°C	18°C	19°C	18.5°C
Dec 7	18°C	17°C	19°C	17.8°C
Dec 8	18°C	18°C	17°C	17.8°C
Dec 9	18°C	18°C	17°C	17.8°C
Dec 10	18°C	17°C	18°C	17.5°C
Dec 11	18°C	16°C	18°C	17.3°C
Dec 12	18°C	17°C	18°C	17.5°C
Dec 13	18°C	17°C	18°C	17.5°C
Dec 14	18°C	17°C	18°C	17.5°C
Dec 15	18°C	16°C	17°C	17.0°C
Dec 16	17°C	17°C	18°C	17.0°C
Dec 17	18°C	17°C	17°C	17.3°C
Dec 18	17°C	17°C	17°C	17.0°C
Dec 19	17°C	16°C	17°C	16.5°C
Dec 20	17°C	16°C	17°C	16.8°C
Dec 21	17°C	16°C	16°C	16.5°C
Dec 22	16°C	16°C	16°C	16.0°C
Dec 23	17°C	16°C	17°C	16.5°C
Dec 24	16°C	16°C	16°C	16.0°C
Dec 25	16°C	16°C	16°C	16.0°C
Dec 26	15°C	15°C	16°C	15.5°C
Dec 27	15°C	16°C	16°C	15.8°C
Dec 28	15°C	16°C	16°C	15.8°C
Dec 29	16°C	15°C	16°C	15.8°C
Dec 30	15°C	15°C	15°C	15.0°C

Sumoto Climate and Swimming Opportunities in December

12°C

Average Day Air Temperature

4°C

Average Night Air Temperature

44 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

10 hrs

Daylight
per Day

4 hrs

Sunshine
per Day

12 km/h

Average Wind Speed

66%

Average
humidity

Sumoto lies within the Hyōgo Prefecture in Japan. The average daytime temperature in Sumoto in December is 12°C (53°F), while the nighttime average is 4°C (39°F). There are typically 10 rainy days during the month, with a total precipitation of 44 mm (1.8 inches). The daylight duration in December in Sumoto is 10 hours, with an average of 4 hours of sunshine per day. The average wind speed in December is 12 km/h (7 mph), and the humidity level is around 66%.

The water temperature in Sumoto in December ranges from 15°C to 19°C (59°F to 66°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 17°C (63°F) by mid-December and reaching 16°C (61°F) in the last ten days. Overall, the average sea temperature in Sumoto for December is 17°C (63°F).

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Sumoto

What is the sea temperature in Sumoto in December?

The water temperature in the Seto Inland Sea in Sumoto in December ranges from 15°C to 19°C (59°F to 66°F).

Is it possible to swim in the Sea of Japan in Tomakomai in December?

The average sea temperature in Tomakomai in December is 10°C (50°F), and the air temperature is 2°C (35°F), so very cold water with low air temperature creates extreme swimming conditions. Hypothermia can occur quickly, making it unsafe for most people.