All data are in degrees Fahrenheit

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Water temperature in Osaka

Detailed information about the current water temperature in Osaka. 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 Osaka now

69.7

°F

October 30, 09:35

Trend:

decreasing

Yesterday:

70.1°F

Tomorrow:

69.5°F

Sunrise:

06:16

Sunset:

17:07

Day Length:

10 h. 51 min.

Osaka in November

Minimum:

49.6°F

Average:

54.8°F

Maximum:

59.6°F

Sea water temperature in Osaka today

As of now, in Osaka, 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 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 72.7°F on 2024, while the historical minimum was 68.4°F on 2020.

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 69.0°F, the minimum temperature may reach 68.6°F, and the maximum might stay at 69.5°F.

Daily water temperature in Osaka

Date Current Year

actual* / forecast**

last year 10 years average
Oct 16 76.3°F 74.4°F 73.7°F
Oct 17 75.8°F 75.6°F 73.5°F
Oct 18 75.0°F 75.2°F 73.5°F
Oct 19 74.6°F 75.9°F 73.2°F
Oct 20 74.2°F 75.7°F 73.0°F
Oct 21 73.9°F 75.0°F 72.6°F
Oct 22 73.5°F 73.8°F 72.2°F
Oct 23 74.0°F 73.7°F 72.0°F
Oct 24 72.6°F 74.1°F 71.9°F
Oct 25 72.1°F 73.7°F 71.6°F
Oct 26 71.9°F 73.4°F 71.3°F
Oct 27 72.1°F 72.6°F 71.0°F
Oct 28 71.3°F 72.4°F 70.9°F
Oct 29 70.1°F 72.2°F 70.8°F
Oct 30 69.7°F 72.7°F 70.4°F
Oct 31 69.5°F 72.4°F 70.3°F
Nov 1 69.2°F 72.3°F 70.0°F
Nov 2 69.1°F 72.0°F 69.9°F
Nov 3 68.9°F 72.4°F 69.7°F
Nov 4 68.9°F 71.3°F 69.7°F
Nov 5 68.6°F 70.8°F 69.4°F
Nov 6 68.6°F 71.3°F 69.4°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 Osaka by month

In Osaka, the months July through October offer comfortable swimming conditions, which amounts to 116 swimming days.
The warmest water in Osaka was recorded on September 1, 2025, reaching a 87.0°F. While the coldest temperature occurred on February 15, 2025, dipping to 42.4°F. The average readings by season are 55.3°F in Winter, 58.9°F in Spring, 78.1°F in Summer, and 73.5°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Amagasaki 69.9°F 5mi
Sakai 69.7°F 8mi
Nishinomiya-hama 70.3°F 10mi
Kobe 72.1°F 18mi
Kyoto 67.9°F 27mi
Ōtsu 67.9°F 30mi
Himeji 73.9°F 46mi
Maizuru 71.4°F 53mi
Tokushima 73.8°F 69mi

* current water temperature in this city

** straight line distance from Osaka