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 15.47°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

59.8

°F

November 23, 05:45

Trend:

decreasing

Yesterday:

59.9°F

Tomorrow:

59.7°F

Sunrise:

06:38

Sunset:

16:47

Day Length:

10 h. 9 min.

Ōtsu in November

Minimum:

51.4°F

Average:

53.5°F

Maximum:

55.4°F

Sea water temperature in Ōtsu today

As of now, in Ōtsu, the water temperature is 59.8°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.4°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

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 63.7°F on 2015, while the historical minimum was 59.6°F on 2022.

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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 58.9°F, the minimum temperature may reach 58.2°F, and the maximum might stay at 59.7°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
Nov 9	64.3°F	64.4°F	64.2°F
Nov 10	64.2°F	64.5°F	64.3°F
Nov 11	64.2°F	64.3°F	64.1°F
Nov 12	63.2°F	64.0°F	63.8°F
Nov 13	63.2°F	63.9°F	63.7°F
Nov 14	63.1°F	63.8°F	63.6°F
Nov 15	62.8°F	62.0°F	63.4°F
Nov 16	59.9°F	62.2°F	63.1°F
Nov 17	60.7°F	62.5°F	63.1°F
Nov 18	61.1°F	62.6°F	63.1°F
Nov 19	61.3°F	62.7°F	62.8°F
Nov 20	60.8°F	62.8°F	62.7°F
Nov 21	60.5°F	62.7°F	62.9°F
Nov 22	59.9°F	58.8°F	62.3°F
Nov 23	59.8°F	60.2°F	62.2°F
Nov 24	59.7°F	60.4°F	62.1°F
Nov 25	59.5°F	60.6°F	61.9°F
Nov 26	59.3°F	60.2°F	61.7°F
Nov 27	58.9°F	60.1°F	61.2°F
Nov 28	58.6°F	60.3°F	60.9°F
Nov 29	58.4°F	60.0°F	60.7°F
Nov 30	58.2°F	60.5°F	60.5°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 Ōtsu by month

In Ōtsu, the months July through September offer comfortable swimming conditions, which amounts to 105 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 53.7°F in Winter, 57.0°F in Spring, 76.9°F in Summer, and 71.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kyoto	59.8°F	7mi
Osaka	65.0°F	30mi
Amagasaki	64.9°F	32mi
Nishinomiya-hama	65.2°F	36mi
Sakai	65.2°F	37mi
Tsu	61.9°F	41mi
Maizuru	65.9°F	43mi
Kobe	66.0°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu