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 19.27°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

66.7

°F

May 28, 00:53

Trend:

increasing

Yesterday:

66.3°F

Tomorrow:

67.1°F

Sunrise:

04:48

Sunset:

19:03

Day Length:

14 h. 15 min.

Osaka in June

Minimum:

52.1°F

Average:

55.7°F

Maximum:

60.2°F

Sea water temperature in Osaka today

As of now, in Osaka, the water temperature is 66.7°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.3°F lower 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 rise a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 70.8°F on 2022, while the historical minimum was 66.4°F on 2018.

latest data

last year

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 67.2°F, with minimum temperature starting at 66.9°F, while the maximum might reach 67.6°F.

Daily water temperature in Osaka

Date	Current Year actual* / forecast**	last year	10 years average
May 14	65.9°F	63.1°F	64.5°F
May 15	67.4°F	66.2°F	65.0°F
May 16	66.8°F	65.9°F	65.0°F
May 17	68.5°F	66.1°F	65.6°F
May 18	68.7°F	66.1°F	65.8°F
May 19	69.6°F	65.8°F	66.0°F
May 20	70.3°F	67.2°F	66.0°F
May 21	69.6°F	67.5°F	65.9°F
May 22	70.5°F	68.4°F	66.6°F
May 23	70.0°F	68.3°F	67.0°F
May 24	67.6°F	68.1°F	67.1°F
May 25	67.6°F	67.9°F	67.3°F
May 26	66.1°F	66.8°F	67.4°F
May 27	66.3°F	66.7°F	67.6°F
May 28	66.7°F	66.7°F	68.0°F
May 29	67.1°F	66.9°F	68.4°F
May 30	66.9°F	67.2°F	68.2°F
May 31	67.1°F	67.4°F	68.4°F
Jun 1	66.9°F	68.5°F	68.2°F
Jun 2	66.9°F	68.4°F	68.3°F
Jun 3	67.6°F	68.5°F	68.9°F
Jun 4	67.6°F	68.2°F	69.0°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	67.0°F	5mi
Sakai	66.8°F	8mi
Nishinomiya-hama	67.9°F	10mi
Kobe	69.8°F	18mi
Kyoto	70.9°F	27mi
Ōtsu	70.9°F	30mi
Himeji	68.0°F	46mi
Maizuru	68.3°F	53mi
Tokushima	67.8°F	69mi

* current water temperature in this city

** straight line distance from Osaka