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 8.85°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.

47.9

°F

February 27, 11:33

Trend:

decreasing

Yesterday:

47.9°F

Tomorrow:

47.6°F

Sunrise:

06:30

Sunset:

17:50

Day Length:

11 h. 20 min.

Ōtsu in March

Minimum:

52.5°F

Average:

54.5°F

Maximum:

55.9°F

Sea water temperature in Ōtsu today

As of now, in Ōtsu, the water temperature is 47.9°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 52.3°F on 2016, while the historical minimum was 46.2°F on 2024.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 47.3°F, the minimum temperature may reach 47.0°F, and the maximum might stay at 47.6°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
Feb 13	48.5°F	48.5°F	50.6°F
Feb 14	48.5°F	48.5°F	50.8°F
Feb 15	48.7°F	48.8°F	50.6°F
Feb 16	49.0°F	49.1°F	50.7°F
Feb 17	49.3°F	46.7°F	50.5°F
Feb 18	45.9°F	47.2°F	50.3°F
Feb 19	46.6°F	47.8°F	50.3°F
Feb 20	47.2°F	48.2°F	50.0°F
Feb 21	44.5°F	48.6°F	49.9°F
Feb 22	44.0°F	48.0°F	49.9°F
Feb 23	45.0°F	48.3°F	50.1°F
Feb 24	45.8°F	48.1°F	49.9°F
Feb 25	46.5°F	48.3°F	50.0°F
Feb 26	47.9°F	48.6°F	50.4°F
Feb 27	47.9°F	48.7°F	50.4°F
Feb 28	47.6°F	48.9°F	50.1°F
Mar 1	47.4°F	47.1°F	50.0°F
Mar 2	47.6°F	46.0°F	50.1°F
Mar 3	47.1°F	46.6°F	49.7°F
Mar 4	47.0°F	47.1°F	49.6°F
Mar 5	47.1°F	47.6°F	49.7°F
Mar 6	47.1°F	48.0°F	49.7°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, 57.2°F in Spring, 77.4°F in Summer, and 71.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kyoto	47.9°F	7mi
Osaka	49.0°F	30mi
Amagasaki	49.2°F	32mi
Nishinomiya-hama	49.5°F	36mi
Sakai	49.1°F	37mi
Tsu	50.6°F	41mi
Maizuru	52.1°F	43mi
Kobe	49.4°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu