What is the current water temperature in Okayama?

Q: What is the current water temperature in Okayama?

As of now, in Okayama, the water temperature is 13.37°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

Japan > Okayama

Water temperature in Okayama

Detailed information about the current water temperature in Okayama. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

56.1

°F

December 22, 05:23

Trend:

decreasing

Yesterday:

56.5°F

Tomorrow:

55.9°F

Sunrise:

07:08

Sunset:

16:58

Day Length:

9 h. 50 min.

Okayama in December

Minimum:

50.4°F

Average:

53.6°F

Maximum:

59.0°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 56.1°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.3°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 60.5°F on 2015, while the historical minimum was 55.2°F on 2024.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 54.7°F, the minimum temperature may reach 53.9°F, and the maximum might stay at 55.9°F.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
Dec 8	61.2°F	60.0°F	60.9°F
Dec 9	60.9°F	59.9°F	60.4°F
Dec 10	60.2°F	59.6°F	60.1°F
Dec 11	60.0°F	59.5°F	59.8°F
Dec 12	59.4°F	59.5°F	59.6°F
Dec 13	59.3°F	59.5°F	59.3°F
Dec 14	59.0°F	59.5°F	59.2°F
Dec 15	58.5°F	59.5°F	59.1°F
Dec 16	58.9°F	58.9°F	59.1°F
Dec 17	57.9°F	57.5°F	58.7°F
Dec 18	58.1°F	57.7°F	58.6°F
Dec 19	58.6°F	56.8°F	58.3°F
Dec 20	58.4°F	57.2°F	58.2°F
Dec 21	56.5°F	57.3°F	57.8°F
Dec 22	56.1°F	55.2°F	57.3°F
Dec 23	55.9°F	55.1°F	57.1°F
Dec 24	55.3°F	54.4°F	56.6°F
Dec 25	54.7°F	54.6°F	56.0°F
Dec 26	54.6°F	54.8°F	55.9°F
Dec 27	54.5°F	54.2°F	55.8°F
Dec 28	54.3°F	53.9°F	55.6°F
Dec 29	53.9°F	54.3°F	55.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Okayama by month

In Okayama, the months July through October offer comfortable swimming conditions, which amounts to 117 swimming days.

The warmest water in Okayama was recorded on September 3, 2025, reaching a 87.6°F. While the coldest temperature occurred on March 10, 2022, dipping to 44.8°F. The average readings by season are 54.1°F in Winter, 57.6°F in Spring, 76.5°F in Summer, and 74.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kurashiki	57.5°F	11mi
Takamatsu	57.9°F	23mi
Marugame	58.2°F	27mi
Fukuyama	58.1°F	34mi
Himeji	59.7°F	45mi
Tokushima	60.2°F	54mi
Niihama	58.7°F	60mi
Yonago	60.2°F	64mi
Saijō	59.8°F	66mi

* current water temperature in this city

** straight line distance from Okayama