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 14.46°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.

58.0

°F

April 9, 02:22

Trend:

stable

Yesterday:

58.3°F

Tomorrow:

58.3°F

Sunrise:

05:42

Sunset:

18:31

Day Length:

12 h. 49 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 58.0°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 2.3°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 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 58.9°F on 2016, while the historical minimum was 53.2°F on 2019.

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 58.3°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
Mar 26	53.6°F	49.8°F	52.9°F
Mar 27	53.1°F	51.1°F	53.0°F
Mar 28	53.9°F	51.7°F	53.5°F
Mar 29	53.5°F	52.3°F	54.2°F
Mar 30	53.9°F	52.8°F	54.3°F
Mar 31	54.9°F	53.2°F	54.4°F
Apr 1	54.6°F	53.6°F	54.7°F
Apr 2	54.2°F	54.0°F	54.8°F
Apr 3	54.9°F	53.0°F	54.8°F
Apr 4	55.3°F	51.5°F	54.6°F
Apr 5	57.8°F	50.5°F	55.2°F
Apr 6	57.5°F	53.6°F	55.4°F
Apr 7	57.3°F	53.5°F	55.4°F
Apr 8	58.3°F	52.8°F	55.9°F
Apr 9	58.0°F	53.6°F	55.7°F
Apr 10	58.3°F	50.7°F	56.0°F
Apr 11	58.2°F	51.7°F	55.9°F
Apr 12	58.2°F	53.3°F	55.9°F
Apr 13	58.4°F	53.5°F	56.0°F
Apr 14	58.7°F	54.1°F	56.4°F
Apr 15	58.4°F	52.9°F	56.0°F
Apr 16	58.3°F	52.5°F	55.9°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	57.1°F	11mi
Takamatsu	55.5°F	23mi
Marugame	55.8°F	27mi
Fukuyama	57.7°F	34mi
Himeji	55.9°F	45mi
Tokushima	55.8°F	54mi
Niihama	58.3°F	60mi
Yonago	57.7°F	64mi
Saijō	57.1°F	66mi

* current water temperature in this city

** straight line distance from Okayama