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 17.47°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.

63.4

°F

April 29, 23:25

Trend:

increasing

Yesterday:

60.6°F

Tomorrow:

63.9°F

Sunrise:

05:11

Sunset:

18:41

Day Length:

13 h. 30 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 63.4°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 2.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise 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 63.3°F on 2022, while the historical minimum was 58.5°F on 2020.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 64.2°F, with minimum temperature starting at 63.5°F, while the maximum might reach 65.4°F.

Daily water temperature in Osaka

Date	Current Year actual* / forecast**	last year	10 years average
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	59.8°F
Apr 23	60.7°F	62.1°F	60.0°F
Apr 24	61.2°F	60.5°F	60.1°F
Apr 25	61.4°F	59.1°F	60.5°F
Apr 26	61.2°F	57.8°F	60.3°F
Apr 27	61.2°F	58.8°F	60.4°F
Apr 28	60.6°F	59.8°F	60.5°F
Apr 29	63.4°F	59.1°F	61.2°F
Apr 30	63.9°F	58.8°F	61.7°F
May 1	63.5°F	59.9°F	61.2°F
May 2	63.8°F	60.6°F	61.6°F
May 3	63.7°F	59.6°F	61.5°F
May 4	64.2°F	60.8°F	61.9°F
May 5	64.9°F	63.3°F	62.7°F
May 6	65.4°F	63.1°F	63.1°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	62.9°F	5mi
Sakai	63.7°F	8mi
Nishinomiya-hama	62.0°F	10mi
Kobe	60.4°F	18mi
Kyoto	61.2°F	27mi
Ōtsu	61.2°F	30mi
Himeji	61.3°F	46mi
Maizuru	59.1°F	53mi
Tokushima	63.3°F	69mi

* current water temperature in this city

** straight line distance from Osaka