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 20.14°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 > 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.

68.3

°F

October 29, 20:58

Trend:

decreasing

Yesterday:

68.5°F

Tomorrow:

67.9°F

Sunrise:

06:14

Sunset:

17:06

Day Length:

10 h. 52 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 68.3°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 1.4°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 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 maximum temperature for this date. The maximum temperature recorded for this date was 69.0°F on 2024, while the historical minimum was 64.5°F on 2022.

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 shows a gradual cooling trend. The average temperature is expected to be 67.2°F, the minimum temperature may reach 66.5°F, and the maximum might stay at 68.1°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
Oct 15	74.8°F	74.0°F	71.5°F
Oct 16	74.3°F	73.6°F	71.6°F
Oct 17	74.6°F	71.7°F	71.2°F
Oct 18	74.2°F	71.3°F	71.0°F
Oct 19	73.7°F	73.5°F	70.9°F
Oct 20	73.1°F	72.9°F	70.5°F
Oct 21	71.9°F	72.8°F	70.1°F
Oct 22	71.3°F	70.6°F	69.5°F
Oct 23	70.8°F	70.3°F	69.2°F
Oct 24	69.6°F	72.1°F	68.8°F
Oct 25	69.2°F	71.5°F	68.3°F
Oct 26	68.7°F	70.9°F	67.9°F
Oct 27	68.8°F	69.7°F	67.5°F
Oct 28	68.5°F	69.4°F	67.2°F
Oct 29	68.3°F	69.0°F	66.8°F
Oct 30	67.9°F	68.9°F	66.5°F
Oct 31	67.5°F	68.6°F	66.0°F
Nov 1	68.1°F	69.3°F	66.6°F
Nov 2	67.1°F	68.1°F	65.6°F
Nov 3	66.8°F	67.4°F	65.4°F
Nov 4	66.7°F	65.7°F	65.2°F
Nov 5	66.5°F	65.9°F	65.1°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	68.3°F	7mi
Osaka	70.1°F	30mi
Amagasaki	70.3°F	32mi
Nishinomiya-hama	70.7°F	36mi
Sakai	70.1°F	37mi
Tsu	68.6°F	41mi
Maizuru	71.6°F	43mi
Kobe	72.6°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu