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 11.91°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.

53.4

°F

March 26, 00:25

Trend:

increasing

Yesterday:

53.2°F

Tomorrow:

53.7°F

Sunrise:

06:01

Sunset:

18:20

Day Length:

12 h. 19 min.

Okayama in April

Minimum:

51.4°F

Average:

54.1°F

Maximum:

59.1°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 53.4°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 0.7°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming 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 58.9°F on 2016, while the historical minimum was 49.8°F on 2025.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 54.8°F, with minimum temperature starting at 53.7°F, while the maximum might reach 55.5°F.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
Mar 12	50.1°F	49.1°F	50.9°F
Mar 13	50.4°F	49.6°F	51.2°F
Mar 14	50.2°F	47.6°F	51.2°F
Mar 15	50.2°F	48.8°F	51.5°F
Mar 16	50.3°F	49.3°F	51.7°F
Mar 17	51.2°F	49.7°F	51.8°F
Mar 18	52.7°F	50.2°F	52.1°F
Mar 19	52.9°F	49.6°F	52.2°F
Mar 20	50.6°F	49.3°F	51.9°F
Mar 21	51.2°F	49.3°F	52.2°F
Mar 22	52.0°F	49.9°F	52.3°F
Mar 23	53.0°F	50.4°F	52.4°F
Mar 24	53.1°F	51.9°F	52.4°F
Mar 25	53.2°F	51.3°F	52.6°F
Mar 26	53.4°F	49.8°F	52.8°F
Mar 27	53.7°F	51.1°F	53.0°F
Mar 28	54.2°F	51.7°F	53.5°F
Mar 29	55.0°F	52.3°F	54.3°F
Mar 30	55.0°F	52.8°F	54.3°F
Mar 31	55.0°F	53.2°F	54.3°F
Apr 1	55.4°F	53.6°F	54.8°F
Apr 2	55.5°F	54.0°F	54.9°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	54.5°F	11mi
Takamatsu	52.9°F	23mi
Marugame	52.4°F	27mi
Fukuyama	53.3°F	34mi
Himeji	52.3°F	45mi
Tokushima	55.6°F	54mi
Niihama	54.1°F	60mi
Yonago	54.6°F	64mi
Saijō	55.0°F	66mi

* current water temperature in this city

** straight line distance from Okayama