Sea Temperature in Okayama in December

Complete information on the sea temperature range in the Seto Inland Sea in Okayama in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Okayama. 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 Okayama in December

13°C

MINIMUN

16.5°C

AVERAGE

20°C

MAXIMUM

Historical Data of Water Temperature in December in Okayama

Water Temperature Chart for Seto Inland Sea in Okayama in December

Sea Temperature Table in Okayama in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	19°C	18°C	18°C	18.0°C
Dec 2	18°C	18°C	19°C	18.0°C
Dec 3	18°C	17°C	18°C	17.5°C
Dec 4	17°C	17°C	18°C	17.3°C
Dec 5	17°C	17°C	18°C	17.3°C
Dec 6	17°C	17°C	18°C	17.0°C
Dec 7	17°C	16°C	18°C	17.0°C
Dec 8	17°C	17°C	16°C	17.0°C
Dec 9	17°C	17°C	16°C	16.8°C
Dec 10	16°C	16°C	17°C	16.5°C
Dec 11	17°C	15°C	16°C	16.0°C
Dec 12	16°C	15°C	16°C	16.0°C
Dec 13	16°C	16°C	16°C	16.0°C
Dec 14	16°C	16°C	16°C	16.0°C
Dec 15	16°C	15°C	16°C	15.5°C
Dec 16	16°C	15°C	17°C	15.8°C
Dec 17	16°C	15°C	15°C	15.3°C
Dec 18	15°C	15°C	16°C	15.3°C
Dec 19	14°C	15°C	15°C	14.5°C
Dec 20	14°C	15°C	16°C	15.0°C
Dec 21	14°C	15°C	15°C	14.5°C
Dec 22	14°C	15°C	15°C	14.5°C
Dec 23	14°C	14°C	15°C	14.5°C
Dec 24	14°C	14°C	15°C	14.5°C
Dec 25	13°C	14°C	15°C	14.0°C
Dec 26	14°C	15°C	14°C	14.3°C
Dec 27	13°C	14°C	14°C	13.8°C
Dec 28	13°C	14°C	14°C	13.8°C
Dec 29	13°C	13°C	13°C	13.0°C
Dec 30	13°C	14°C	14°C	13.5°C

Okayama Climate and Swimming Opportunities in December

12°C

Average Day Air Temperature

3°C

Average Night Air Temperature

55 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

70%

Average
humidity

Okayama lies within the Okayama Prefecture in Japan. The average daytime temperature in Okayama in December is 12°C (53°F), while the nighttime average is 3°C (37°F). There are typically 10 rainy days during the month, with a total precipitation of 55 mm (2.2 inches). The daylight duration in December in Okayama 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 70%.

The water temperature in Okayama in December ranges from 13°C to 18°C (55°F to 64°F). At the beginning of the month, the average temperature is around 17°C (63°F), shifting to 16°C (61°F) by mid-December and reaching 14°C (57°F) in the last ten days. Overall, the average sea temperature in Okayama for December is 16°C (61°F).

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Okayama

What is the sea temperature in Okayama in December?

The water temperature in the Seto Inland Sea in Okayama in December ranges from 13°C to 18°C (55°F to 64°F).

Is it possible to swim in the Pacific Ocean in Sendai in December?

The average sea temperature in Sendai in December is 15°C (59°F), and the air temperature is 12°C (53°F), so the water is cool, but many swimmers can tolerate it, especially with the sun out. Acclimatization is helpful.