All data are in degrees Fahrenheit

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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.
Sea temperature in Okayama now

82.4

°F

August 16, 15:33

Trend:

stable

Yesterday:

82.3°F

Tomorrow:

82.0°F

Sunrise:

05:25

Sunset:

18:52

Day Length:

13 h. 27 min.

Okayama in August

Minimum:

50.5°F

Average:

53.8°F

Maximum:

58.8°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 82.4°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.6°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 86.0°F on 2025, while the historical minimum was 80.6°F on 2021.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.2°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
Aug 2 83.8°F 84.4°F 81.6°F
Aug 3 84.3°F 84.7°F 82.1°F
Aug 4 85.2°F 85.1°F 82.3°F
Aug 5 84.6°F 85.1°F 82.5°F
Aug 6 85.3°F 85.7°F 82.4°F
Aug 7 84.8°F 85.9°F 82.7°F
Aug 8 84.5°F 85.3°F 82.6°F
Aug 9 84.3°F 85.2°F 82.5°F
Aug 10 83.4°F 84.6°F 81.9°F
Aug 11 83.6°F 84.7°F 82.0°F
Aug 12 82.7°F 82.5°F 82.3°F
Aug 13 82.9°F 82.3°F 82.4°F
Aug 14 82.3°F 85.1°F 82.8°F
Aug 15 82.3°F 85.3°F 82.9°F
Aug 16 82.4°F 86.0°F 83.0°F
Aug 17 82.0°F 86.3°F 82.6°F
Aug 18 81.9°F 86.1°F 82.5°F
Aug 19 82.0°F 85.0°F 82.6°F
Aug 20 82.0°F 84.7°F 82.6°F
Aug 21 82.4°F 85.9°F 83.0°F
Aug 22 82.4°F 85.6°F 83.0°F
Aug 23 82.5°F 86.0°F 83.1°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, 76.8°F in Summer, and 74.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kurashiki 84.2°F 11mi
Takamatsu 80.7°F 23mi
Marugame 81.7°F 27mi
Fukuyama 83.2°F 34mi
Himeji 83.3°F 45mi
Tokushima 80.7°F 54mi
Niihama 82.3°F 60mi
Yonago 82.8°F 64mi
Saijō 81.3°F 66mi

* current water temperature in this city

** straight line distance from Okayama