What is the current water temperature in Ōtsu?

Q: What is the current water temperature in Ōtsu?

As of now, in Ōtsu, the water temperature is 16.72°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Japan > Ōtsu

Water temperature in Ōtsu

Detailed information about the current water temperature in Ōtsu. 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.

62.1

°F

May 3, 05:01

Trend:

increasing

Yesterday:

62.0°F

Tomorrow:

62.5°F

Sunrise:

05:05

Sunset:

18:43

Day Length:

13 h. 38 min.

Ōtsu in May

Minimum:

52.5°F

Average:

54.4°F

Maximum:

55.9°F

Sea water temperature in Ōtsu today

As of now, in Ōtsu, the water temperature is 62.1°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 1.4°F higher 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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 63.6°F on 2022, while the historical minimum was 56.9°F on 2017.

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 63.3°F, with minimum temperature starting at 62.5°F, while the maximum might reach 63.8°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
Apr 19	59.4°F	59.4°F	57.7°F
Apr 20	59.8°F	58.8°F	57.8°F
Apr 21	62.6°F	58.8°F	58.6°F
Apr 22	62.9°F	60.1°F	58.9°F
Apr 23	62.2°F	59.6°F	59.2°F
Apr 24	61.7°F	61.1°F	59.2°F
Apr 25	61.2°F	60.7°F	59.4°F
Apr 26	62.3°F	62.0°F	59.5°F
Apr 27	61.8°F	61.9°F	59.2°F
Apr 28	61.6°F	61.3°F	59.6°F
Apr 29	61.2°F	62.0°F	60.1°F
Apr 30	60.8°F	61.6°F	60.3°F
May 1	61.0°F	61.5°F	60.0°F
May 2	62.0°F	61.2°F	60.5°F
May 3	62.1°F	60.7°F	60.7°F
May 4	62.5°F	61.2°F	61.1°F
May 5	62.9°F	63.0°F	61.5°F
May 6	63.3°F	62.7°F	61.8°F
May 7	63.8°F	64.2°F	62.3°F
May 8	63.6°F	62.2°F	62.2°F
May 9	63.7°F	62.2°F	62.3°F
May 10	63.6°F	62.1°F	62.2°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 Ōtsu by month

In Ōtsu, the months July through September offer comfortable swimming conditions, which amounts to 106 swimming days.

The warmest water in Ōtsu was recorded on August 3, 2025, reaching a 89.2°F. While the coldest temperature occurred on January 30, 2025, dipping to 43.9°F. The average readings by season are 53.6°F in Winter, 57.3°F in Spring, 77.4°F in Summer, and 71.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kyoto	62.1°F	7mi
Osaka	62.8°F	30mi
Amagasaki	62.8°F	32mi
Nishinomiya-hama	62.1°F	36mi
Sakai	62.6°F	37mi
Tsu	63.1°F	41mi
Maizuru	60.4°F	43mi
Kobe	61.0°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu