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 20.96°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.

69.7

°F

November 9, 02:05

Trend:

decreasing

Yesterday:

70.1°F

Tomorrow:

69.4°F

Sunrise:

06:32

Sunset:

17:04

Day Length:

10 h. 32 min.

Okayama in November

Minimum:

49.9°F

Average:

53.8°F

Maximum:

59.1°F

Sea water temperature in Okayama today

As of now, in Okayama, the water temperature is 69.7°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 0.8°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 is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 70.4°F on 2023, while the historical minimum was 68.1°F on 2017.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 68.6°F, the minimum temperature may reach 67.9°F, and the maximum might stay at 69.4°F.

Daily water temperature in Okayama

Date	Current Year actual* / forecast**	last year	10 years average
Oct 26	75.2°F	75.1°F	72.8°F
Oct 27	74.2°F	74.7°F	72.3°F
Oct 28	74.2°F	74.2°F	72.1°F
Oct 29	73.9°F	73.8°F	71.8°F
Oct 30	72.6°F	73.5°F	71.4°F
Oct 31	72.2°F	73.8°F	71.2°F
Nov 1	72.1°F	73.3°F	70.9°F
Nov 2	71.9°F	72.9°F	70.6°F
Nov 3	70.8°F	73.0°F	70.3°F
Nov 4	70.7°F	72.1°F	70.1°F
Nov 5	70.4°F	71.5°F	69.8°F
Nov 6	70.1°F	71.9°F	69.8°F
Nov 7	70.3°F	71.5°F	69.5°F
Nov 8	70.1°F	71.3°F	69.3°F
Nov 9	69.7°F	71.0°F	69.0°F
Nov 10	69.4°F	70.7°F	68.7°F
Nov 11	69.2°F	70.4°F	68.4°F
Nov 12	68.8°F	70.1°F	68.1°F
Nov 13	68.5°F	69.7°F	67.7°F
Nov 14	68.3°F	69.5°F	67.5°F
Nov 15	68.2°F	69.5°F	67.4°F
Nov 16	67.9°F	69.2°F	67.1°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 117 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 54.1°F in Winter, 57.6°F in Spring, 76.5°F in Summer, and 74.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kurashiki	68.4°F	11mi
Takamatsu	70.0°F	23mi
Marugame	68.8°F	27mi
Fukuyama	69.4°F	34mi
Himeji	69.4°F	45mi
Tokushima	70.4°F	54mi
Niihama	68.6°F	60mi
Yonago	68.9°F	64mi
Saijō	68.9°F	66mi

* current water temperature in this city

** straight line distance from Okayama