What is the current water temperature in Osaka?

Q: What is the current water temperature in Osaka?

As of now, in Osaka, the water temperature is 17.8°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

64.0

°F

May 13, 23:49

Trend:

decreasing

Yesterday:

64.2°F

Tomorrow:

63.9°F

Sunrise:

04:57

Sunset:

18:52

Day Length:

13 h. 55 min.

Osaka in May

Minimum:

51.4°F

Average:

55.4°F

Maximum:

60.4°F

Sea water temperature in Osaka today

As of now, in Osaka, the water temperature is 64.0°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 0.4°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

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 66.1°F on 2023, while the historical minimum was 63.1°F on 2018.

latest data

last year

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 64.7°F, with minimum temperature starting at 63.9°F, while the maximum might reach 65.2°F.

Daily water temperature in Osaka

Date	Current Year actual* / forecast**	last year	10 years average
Apr 29	63.4°F	59.1°F	61.4°F
Apr 30	63.7°F	58.8°F	61.9°F
May 1	64.2°F	59.9°F	61.5°F
May 2	62.9°F	60.6°F	61.7°F
May 3	64.6°F	59.6°F	61.8°F
May 4	64.8°F	60.8°F	62.2°F
May 5	64.9°F	63.3°F	62.9°F
May 6	65.3°F	63.1°F	63.3°F
May 7	62.1°F	65.4°F	63.4°F
May 8	64.0°F	62.0°F	63.0°F
May 9	62.7°F	61.8°F	62.8°F
May 10	63.0°F	61.7°F	62.7°F
May 11	64.0°F	62.3°F	63.3°F
May 12	64.2°F	62.9°F	63.9°F
May 13	64.0°F	63.3°F	64.5°F
May 14	63.9°F	63.1°F	64.3°F
May 15	64.4°F	66.2°F	64.8°F
May 16	64.3°F	65.9°F	64.8°F
May 17	64.9°F	66.1°F	65.4°F
May 18	65.1°F	66.1°F	65.5°F
May 19	65.2°F	65.8°F	65.6°F
May 20	65.1°F	67.2°F	65.6°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, 58.6°F in Spring, 78.3°F in Summer, and 73.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Amagasaki	63.9°F	5mi
Sakai	64.2°F	8mi
Nishinomiya-hama	63.9°F	10mi
Kobe	64.0°F	18mi
Kyoto	65.9°F	27mi
Ōtsu	65.9°F	30mi
Himeji	63.0°F	46mi
Maizuru	61.6°F	53mi
Tokushima	63.6°F	69mi

* current water temperature in this city

** straight line distance from Osaka