What is the current water temperature in Ōtsu?

As of now, in Ōtsu, the water temperature is 23.06°C. It's safe to say that the water is comfortably warm for various water-related activities.

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.

73.5

°F

June 22, 07:45

Trend:

increasing

Yesterday:

73.1°F

Tomorrow:

74.4°F

Sunrise:

04:43

Sunset:

19:14

Day Length:

14 h. 31 min.

Ōtsu in June

Minimum:

52.5°F

Average:

54.4°F

Maximum:

55.7°F

Sea water temperature in Ōtsu today

As of now, in Ōtsu, the water temperature is 73.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.9°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise 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 maximum temperature for this date. The maximum temperature recorded for this date was 75.0°F on 2024, while the historical minimum was 66.9°F on 2017.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 75.7°F, with minimum temperature starting at 74.4°F, while the maximum might reach 77.0°F.

Daily water temperature in Ōtsu

Date	Current Year actual* / forecast**	last year	10 years average
Jun 8	69.5°F	65.8°F	68.1°F
Jun 9	69.2°F	65.9°F	68.1°F
Jun 10	69.0°F	66.1°F	68.5°F
Jun 11	69.4°F	66.3°F	69.4°F
Jun 12	71.4°F	66.9°F	70.0°F
Jun 13	72.0°F	69.5°F	70.3°F
Jun 14	71.8°F	69.5°F	70.3°F
Jun 15	71.6°F	69.5°F	70.7°F
Jun 16	73.4°F	69.7°F	71.0°F
Jun 17	72.7°F	70.2°F	70.9°F
Jun 18	72.1°F	71.1°F	70.7°F
Jun 19	74.1°F	72.2°F	71.4°F
Jun 20	73.4°F	73.8°F	71.6°F
Jun 21	73.1°F	73.0°F	71.2°F
Jun 22	73.5°F	72.8°F	71.6°F
Jun 23	74.4°F	77.3°F	72.5°F
Jun 24	74.7°F	76.8°F	72.8°F
Jun 25	75.2°F	76.4°F	73.3°F
Jun 26	76.2°F	78.0°F	74.3°F
Jun 27	76.2°F	78.7°F	74.3°F
Jun 28	76.5°F	78.6°F	74.6°F
Jun 29	77.0°F	79.3°F	75.0°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, 57.4°F in Spring, 77.5°F in Summer, and 71.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kyoto	73.5°F	7mi
Osaka	73.8°F	30mi
Amagasaki	73.7°F	32mi
Nishinomiya-hama	73.7°F	36mi
Sakai	74.0°F	37mi
Tsu	74.9°F	41mi
Maizuru	75.0°F	43mi
Kobe	73.6°F	44mi

* current water temperature in this city

** straight line distance from Ōtsu