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 20.07°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

68.1

°F

May 24, 05:19

Trend:

increasing

Yesterday:

67.6°F

Tomorrow:

68.6°F

Sunrise:

04:56

Sunset:

19:06

Day Length:

14 h. 10 min.

Okayama in May

Minimum:

51.0°F

Average:

54.1°F

Maximum:

59.1°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 68.1°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.6°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 66.7°F on 2016, while the historical minimum was 64.3°F on 2018.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 68.6°F, with minimum temperature starting at 68.2°F, while the maximum might reach 68.9°F.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
May 10	63.5°F	61.8°F	61.6°F
May 11	62.3°F	62.2°F	62.0°F
May 12	63.8°F	62.3°F	62.1°F
May 13	63.3°F	61.8°F	62.2°F
May 14	65.5°F	62.7°F	62.6°F
May 15	66.5°F	63.7°F	63.5°F
May 16	66.1°F	62.7°F	63.4°F
May 17	67.3°F	62.4°F	63.4°F
May 18	66.9°F	65.1°F	64.1°F
May 19	67.8°F	64.8°F	64.4°F
May 20	67.3°F	64.8°F	64.4°F
May 21	66.6°F	64.5°F	64.5°F
May 22	67.8°F	64.4°F	64.9°F
May 23	67.6°F	65.7°F	65.0°F
May 24	68.1°F	65.6°F	65.6°F
May 25	68.6°F	65.6°F	66.1°F
May 26	68.5°F	64.6°F	65.9°F
May 27	68.2°F	64.4°F	65.7°F
May 28	68.5°F	65.2°F	65.9°F
May 29	68.6°F	65.3°F	66.1°F
May 30	68.8°F	65.2°F	66.3°F
May 31	68.9°F	66.6°F	66.3°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, 57.4°F in Spring, 76.7°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kurashiki	67.3°F	11mi
Takamatsu	67.3°F	23mi
Marugame	67.1°F	27mi
Fukuyama	68.0°F	34mi
Himeji	68.2°F	45mi
Tokushima	67.2°F	54mi
Niihama	68.2°F	60mi
Yonago	67.4°F	64mi
Saijō	67.7°F	66mi

* current water temperature in this city

** straight line distance from Okayama