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 11.54°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.

52.8

°F

January 12, 08:38

Trend:

decreasing

Yesterday:

52.9°F

Tomorrow:

52.5°F

Sunrise:

07:12

Sunset:

17:13

Day Length:

10 h. 1 min.

Okayama in January

Minimum:

52.3°F

Average:

54.8°F

Maximum:

59.1°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 52.8°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 0.3°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 58.6°F on 2016, while the historical minimum was 50.4°F on 2021.

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 52.1°F, the minimum temperature may reach 51.9°F, and the maximum might stay at 52.5°F.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	56.4°F	54.3°F	54.8°F
Jan 2	55.3°F	53.6°F	54.4°F
Jan 3	53.4°F	53.6°F	54.1°F
Jan 4	53.8°F	54.1°F	54.1°F
Jan 5	53.9°F	54.1°F	54.1°F
Jan 6	54.3°F	54.6°F	54.2°F
Jan 7	54.7°F	53.3°F	54.2°F
Jan 8	54.3°F	52.8°F	53.8°F
Jan 9	54.0°F	52.4°F	53.6°F
Jan 10	54.7°F	51.0°F	53.3°F
Jan 11	52.9°F	50.9°F	53.3°F
Jan 12	52.8°F	51.4°F	53.1°F
Jan 13	52.5°F	51.6°F	52.8°F
Jan 14	52.2°F	52.1°F	52.5°F
Jan 15	52.1°F	51.3°F	52.4°F
Jan 16	52.0°F	51.1°F	52.4°F
Jan 17	52.1°F	51.6°F	52.4°F
Jan 18	52.0°F	49.9°F	52.3°F
Jan 19	51.9°F	50.3°F	52.2°F
Dec 29	56.1°F	54.3°F	55.0°F
Dec 30	56.4°F	54.8°F	55.1°F
Dec 31	56.3°F	55.1°F	55.3°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 118 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 53.7°F in Winter, 57.3°F in Spring, 76.7°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kurashiki	54.8°F	11mi
Takamatsu	53.8°F	23mi
Marugame	54.8°F	27mi
Fukuyama	52.9°F	34mi
Himeji	54.4°F	45mi
Tokushima	55.3°F	54mi
Niihama	55.1°F	60mi
Yonago	57.2°F	64mi
Saijō	57.0°F	66mi

* current water temperature in this city

** straight line distance from Okayama