All data are in degrees Fahrenheit

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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

86.2

°F

July 30, 10:24

Trend:

stable

Yesterday:

85.7°F

Tomorrow:

86.0°F

Sunrise:

05:06

Sunset:

19:03

Day Length:

13 h. 57 min.

Osaka in August

Minimum:

52.9°F

Average:

55.4°F

Maximum:

59.8°F

Sea water temperature in Osaka today

As of now, in Osaka, the water temperature is 86.2°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 2.8°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 86.9°F on 2024, while the historical minimum was 80.2°F on 2016.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Osaka

Date Current Year

actual* / forecast**

 last year 10 years average
Jul 16 83.0°F 84.5°F 80.5°F
Jul 17 83.7°F 83.7°F 80.5°F
Jul 18 83.3°F 83.6°F 81.0°F
Jul 19 83.7°F 85.2°F 81.2°F
Jul 20 83.7°F 83.4°F 81.4°F
Jul 21 85.4°F 82.9°F 81.5°F
Jul 22 86.7°F 84.8°F 82.4°F
Jul 23 86.9°F 84.9°F 82.3°F
Jul 24 87.2°F 85.7°F 82.3°F
Jul 25 86.2°F 85.0°F 82.7°F
Jul 26 85.3°F 85.9°F 82.7°F
Jul 27 85.4°F 85.6°F 82.4°F
Jul 28 85.4°F 84.6°F 82.7°F
Jul 29 85.7°F 84.8°F 82.8°F
Jul 30 86.2°F 86.2°F 83.4°F
Jul 31 86.0°F 85.0°F 83.1°F
Aug 1 85.8°F 85.4°F 83.0°F
Aug 2 86.6°F 86.0°F 83.7°F
Aug 3 86.5°F 85.8°F 83.6°F
Aug 4 86.6°F 85.5°F 83.7°F
Aug 5 87.0°F 86.0°F 84.1°F
Aug 6 87.1°F 85.7°F 84.3°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 July 24, 2026, reaching a 87.2°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, 58.7°F in Spring, 78.3°F in Summer, and 73.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Amagasaki 86.1°F 5mi
Sakai 86.3°F 8mi
Nishinomiya-hama 85.5°F 10mi
Kobe 84.7°F 18mi
Kyoto 87.3°F 27mi
Ōtsu 87.3°F 30mi
Himeji 84.2°F 46mi
Maizuru 83.7°F 53mi
Tokushima 83.8°F 69mi

* current water temperature in this city

** straight line distance from Osaka