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Japan > Osaka

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

60.1

°F

April 22, 22:45

Trend:

stable

Yesterday:

61.2°F

Tomorrow:

60.3°F

Sunrise:

05:19

Sunset:

18:35

Day Length:

13 h. 16 min.

Osaka in April

Minimum:

50.6°F

Average:

55.6°F

Maximum:

60.2°F

Sea water temperature in Osaka today

As of now, in Osaka, the water temperature is 60.1°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 0.3°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 62.3°F on 2025, while the historical minimum was 57.5°F on 2020.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 60.7°F, with minimum temperature starting at 60.3°F, while the maximum might reach 61.5°F.

Daily water temperature in Osaka

Date Current Year

actual* / forecast**

 last year 10 years average
Apr 8 58.2°F 55.3°F 56.9°F
Apr 9 55.6°F 55.7°F 56.9°F
Apr 10 56.8°F 56.0°F 57.1°F
Apr 11 58.6°F 56.6°F 57.0°F
Apr 12 60.4°F 56.3°F 57.3°F
Apr 13 60.7°F 56.5°F 57.3°F
Apr 14 59.5°F 58.9°F 58.1°F
Apr 15 59.8°F 56.0°F 57.5°F
Apr 16 62.0°F 54.9°F 58.2°F
Apr 17 60.2°F 54.6°F 58.5°F
Apr 18 59.6°F 57.7°F 58.7°F
Apr 19 60.5°F 60.2°F 59.2°F
Apr 20 60.8°F 60.1°F 59.1°F
Apr 21 61.2°F 60.5°F 59.6°F
Apr 22 60.1°F 62.3°F 59.7°F
Apr 23 60.3°F 62.1°F 60.0°F
Apr 24 60.3°F 60.5°F 60.0°F
Apr 25 60.7°F 59.1°F 60.4°F
Apr 26 60.6°F 57.8°F 60.2°F
Apr 27 60.6°F 58.8°F 60.3°F
Apr 28 60.8°F 59.8°F 60.5°F
Apr 29 61.5°F 59.1°F 61.2°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

January

February

March

April

May

June

July

August

September

October

November

December

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 54.7°F in Winter, 58.6°F in Spring, 78.3°F in Summer, and 73.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Amagasaki 60.0°F 5mi
Sakai 60.2°F 8mi
Nishinomiya-hama 60.0°F 10mi
Kobe 60.4°F 18mi
Kyoto 62.9°F 27mi
Ōtsu 62.9°F 30mi
Himeji 64.1°F 46mi
Maizuru 57.7°F 53mi
Tokushima 61.1°F 69mi

* current water temperature in this city

** straight line distance from Osaka