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

76.5

°F

October 26, 03:36

Trend:

decreasing

Yesterday:

76.8°F

Tomorrow:

76.1°F

Sunrise:

06:19

Sunset:

17:18

Day Length:

10 h. 59 min.

Okayama in November

Minimum:

49.9°F

Average:

53.2°F

Maximum:

58.7°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 76.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.6°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 75.2°F on 2025, while the historical minimum was 70.9°F on 2017.

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 75.2°F, the minimum temperature may reach 74.4°F, and the maximum might stay at 76.1°F.

Daily water temperature in Okayama

Date Current Year

actual* / forecast**

last year 10 years average
Oct 12 76.7°F 79.1°F 76.6°F
Oct 13 76.7°F 78.6°F 76.3°F
Oct 14 77.0°F 78.2°F 76.1°F
Oct 15 77.1°F 77.8°F 75.9°F
Oct 16 76.5°F 79.1°F 75.9°F
Oct 17 76.3°F 78.4°F 75.6°F
Oct 18 75.9°F 78.4°F 75.5°F
Oct 19 75.7°F 77.8°F 75.1°F
Oct 20 75.8°F 77.3°F 74.9°F
Oct 21 77.5°F 76.8°F 74.7°F
Oct 22 76.9°F 76.3°F 74.3°F
Oct 23 76.5°F 75.8°F 74.0°F
Oct 24 76.4°F 75.9°F 73.8°F
Oct 25 76.8°F 75.6°F 73.1°F
Oct 26 76.5°F 75.2°F 72.9°F
Oct 27 76.1°F 74.2°F 72.4°F
Oct 28 75.8°F 74.2°F 72.2°F
Oct 29 75.5°F 73.9°F 71.9°F
Oct 30 75.2°F 72.6°F 71.5°F
Oct 31 75.0°F 72.2°F 71.3°F
Nov 1 74.7°F 72.1°F 71.1°F
Nov 2 74.4°F 71.9°F 70.8°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 74.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kurashiki 75.9°F 11mi
Takamatsu 75.8°F 23mi
Marugame 75.3°F 27mi
Fukuyama 75.2°F 34mi
Himeji 78.4°F 45mi
Tokushima 77.1°F 54mi
Niihama 75.8°F 60mi
Yonago 73.5°F 64mi
Saijō 75.8°F 66mi

* current water temperature in this city

** straight line distance from Okayama