All data are in degrees Fahrenheit

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Water temperature in Nagoya

Detailed information about the current water temperature in Nagoya. 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.
Sea temperature in Nagoya now

77.1

°F

September 30, 16:14

Trend:

decreasing

Yesterday:

77.7°F

Tomorrow:

76.8°F

Sunrise:

05:46

Sunset:

17:39

Day Length:

11 h. 53 min.

Nagoya in October

Minimum:

52.6°F

Average:

55.4°F

Maximum:

59.2°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 77.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.2°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 81.1°F on 2023, while the historical minimum was 75.0°F on 2018.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 76.3°F, the minimum temperature may reach 75.8°F, and the maximum might stay at 76.8°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Sep 16 78.2°F 83.5°F 80.8°F
Sep 17 78.7°F 84.8°F 80.7°F
Sep 18 78.4°F 84.3°F 80.5°F
Sep 19 77.8°F 83.5°F 80.2°F
Sep 20 78.0°F 82.8°F 79.9°F
Sep 21 77.9°F 80.7°F 79.3°F
Sep 22 79.2°F 77.1°F 78.8°F
Sep 23 78.9°F 76.9°F 78.5°F
Sep 24 78.1°F 76.8°F 78.4°F
Sep 25 78.1°F 76.6°F 78.0°F
Sep 26 78.0°F 75.3°F 77.7°F
Sep 27 77.5°F 76.2°F 77.4°F
Sep 28 77.3°F 76.4°F 77.3°F
Sep 29 77.7°F 75.9°F 77.5°F
Sep 30 77.1°F 75.7°F 76.8°F
Oct 1 76.8°F 75.5°F 76.6°F
Oct 2 76.7°F 75.6°F 76.5°F
Oct 3 76.5°F 75.6°F 76.3°F
Oct 4 76.1°F 75.3°F 75.9°F
Oct 5 75.8°F 75.0°F 75.6°F
Oct 6 76.3°F 76.5°F 76.1°F
Oct 7 76.1°F 76.2°F 75.8°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 Nagoya by month

In Nagoya, the months July through October offer comfortable swimming conditions, which amounts to 124 swimming days.
The warmest water in Nagoya was recorded on August 22, 2025, reaching a 89.0°F. While the coldest temperature occurred on February 22, 2026, dipping to 46.9°F. The average readings by season are 55.8°F in Winter, 60.0°F in Spring, 79.4°F in Summer, and 73.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Hekinan 77.6°F 21mi
Tsu 77.0°F 38mi
Hamamatsu 78.3°F 57mi

* current water temperature in this city

** straight line distance from Nagoya