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

74.1

°F

July 2, 06:45

Trend:

stable

Yesterday:

74.2°F

Tomorrow:

74.6°F

Sunrise:

04:49

Sunset:

19:15

Day Length:

14 h. 26 min.

Osaka in July

Minimum:

53.1°F

Average:

55.8°F

Maximum:

60.2°F

Sea water temperature in Osaka today

As of now, in Osaka, the water temperature is 74.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.3°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 rise 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 minimum temperature for this date. The maximum temperature recorded for this date was 82.5°F on 2022, while the historical minimum was 74.3°F on 2016.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 75.8°F, with minimum temperature starting at 74.6°F, while the maximum might reach 76.4°F.

Daily water temperature in Osaka

Date Current Year

actual* / forecast**

last year 10 years average
Jun 18 71.9°F 73.5°F 72.2°F
Jun 19 73.4°F 76.9°F 72.6°F
Jun 20 73.2°F 79.2°F 73.0°F
Jun 21 73.9°F 77.6°F 73.0°F
Jun 22 74.5°F 78.2°F 73.0°F
Jun 23 74.9°F 77.7°F 73.3°F
Jun 24 74.3°F 77.4°F 73.3°F
Jun 25 73.8°F 77.1°F 73.6°F
Jun 26 74.9°F 80.7°F 74.4°F
Jun 27 73.9°F 80.9°F 74.9°F
Jun 28 75.1°F 78.9°F 74.8°F
Jun 29 73.7°F 79.5°F 74.9°F
Jun 30 74.4°F 81.0°F 75.7°F
Jul 1 74.2°F 82.9°F 76.4°F
Jul 2 74.1°F 79.5°F 76.4°F
Jul 3 74.6°F 81.9°F 76.9°F
Jul 4 75.1°F 82.7°F 77.4°F
Jul 5 75.9°F 85.1°F 78.2°F
Jul 6 76.1°F 84.5°F 78.4°F
Jul 7 76.2°F 82.2°F 78.5°F
Jul 8 76.4°F 85.3°F 78.7°F
Jul 9 76.2°F 83.2°F 78.5°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 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 73.8°F 5mi
Sakai 74.7°F 8mi
Nishinomiya-hama 74.2°F 10mi
Kobe 74.8°F 18mi
Kyoto 73.9°F 27mi
Ōtsu 73.9°F 30mi
Himeji 73.7°F 46mi
Maizuru 74.8°F 53mi
Tokushima 74.2°F 69mi

* current water temperature in this city

** straight line distance from Osaka