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 13.05°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.

55.5

°F

December 29, 08:05

Trend:

stable

Yesterday:

55.8°F

Tomorrow:

55.6°F

Sunrise:

07:10

Sunset:

17:02

Day Length:

9 h. 52 min.

Okayama in January

Minimum:

52.3°F

Average:

55.0°F

Maximum:

59.1°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 55.5°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 higher 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 rise 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 58.7°F on 2015, while the historical minimum was 53.0°F on 2022.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 55.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	55.3°F	54.3°F	55.0°F
Jan 2	54.9°F	53.6°F	54.6°F
Jan 3	54.8°F	53.6°F	54.5°F
Jan 4	54.8°F	54.1°F	54.5°F
Jan 5	54.8°F	54.1°F	54.5°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	57.7°F
Dec 22	56.7°F	55.2°F	57.3°F
Dec 23	56.9°F	55.1°F	57.1°F
Dec 24	57.1°F	54.4°F	56.6°F
Dec 25	57.2°F	54.6°F	56.1°F
Dec 26	56.3°F	54.8°F	56.0°F
Dec 27	55.9°F	54.2°F	55.8°F
Dec 28	55.8°F	53.9°F	55.6°F
Dec 29	55.5°F	54.3°F	55.2°F
Dec 30	55.6°F	54.8°F	55.4°F
Dec 31	55.8°F	55.1°F	55.5°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	56.0°F	11mi
Takamatsu	55.6°F	23mi
Marugame	56.7°F	27mi
Fukuyama	55.8°F	34mi
Himeji	58.2°F	45mi
Tokushima	58.6°F	54mi
Niihama	58.0°F	60mi
Yonago	60.3°F	64mi
Saijō	58.9°F	66mi

* current water temperature in this city

** straight line distance from Okayama