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 15.56°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.

60.0

°F

November 30, 05:08

Trend:

decreasing

Yesterday:

60.2°F

Tomorrow:

60.0°F

Sunrise:

06:45

Sunset:

16:45

Day Length:

10 h. 0 min.

Ōtsu in December

Minimum:

51.1°F

Average:

53.3°F

Maximum:

55.2°F

Sea water temperature in Ōtsu today

As of now, in Ōtsu, the water temperature is 60.0°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 0.5°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. 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 61.5°F on 2020, while the historical minimum was 58.8°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 59.5°F, the minimum temperature may reach 59.0°F, and the maximum might stay at 60.0°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
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	62.7°F
Nov 22	60.8°F	58.8°F	62.1°F
Nov 23	60.7°F	60.2°F	62.1°F
Nov 24	60.4°F	60.4°F	61.9°F
Nov 25	60.3°F	60.6°F	61.7°F
Nov 26	60.2°F	60.2°F	61.5°F
Nov 27	60.2°F	60.1°F	61.1°F
Nov 28	60.3°F	60.3°F	60.9°F
Nov 29	60.2°F	60.0°F	60.7°F
Nov 30	60.0°F	60.5°F	60.5°F
Dec 1	60.0°F	60.5°F	60.5°F
Dec 2	59.9°F	60.3°F	60.4°F
Dec 3	59.5°F	58.6°F	60.1°F
Dec 4	59.4°F	58.4°F	59.9°F
Dec 5	59.3°F	58.2°F	59.8°F
Dec 6	59.1°F	58.0°F	59.6°F
Dec 7	59.0°F	57.8°F	59.6°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 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	60.0°F	7mi
Osaka	63.3°F	30mi
Amagasaki	63.3°F	32mi
Nishinomiya-hama	63.6°F	36mi
Sakai	63.4°F	37mi
Tsu	62.1°F	41mi
Maizuru	65.1°F	43mi
Kobe	64.9°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu