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

78.8

°F

September 24, 11:31

Trend:

decreasing

Yesterday:

78.9°F

Tomorrow:

78.4°F

Sunrise:

05:41

Sunset:

17:48

Day Length:

12 h. 7 min.

Nagoya in September

Minimum:

53.0°F

Average:

55.5°F

Maximum:

59.7°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 78.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.4°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 83.8°F on 2024, while the historical minimum was 75.4°F on 2017.

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 77.7°F, the minimum temperature may reach 77.0°F, and the maximum might stay at 78.4°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Sep 10 78.8°F 85.4°F 81.7°F
Sep 11 78.3°F 84.7°F 81.4°F
Sep 12 78.4°F 84.2°F 81.4°F
Sep 13 78.3°F 83.8°F 81.3°F
Sep 14 78.8°F 83.2°F 81.3°F
Sep 15 78.5°F 82.8°F 80.9°F
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 78.8°F 76.8°F 78.4°F
Sep 25 78.4°F 76.6°F 78.0°F
Sep 26 78.0°F 75.3°F 77.7°F
Sep 27 77.8°F 76.2°F 77.4°F
Sep 28 77.7°F 76.4°F 77.3°F
Sep 29 77.8°F 75.9°F 77.5°F
Sep 30 77.2°F 75.7°F 76.8°F
Oct 1 77.0°F 75.5°F 76.6°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 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 78.5°F 21mi
Tsu 78.2°F 38mi
Hamamatsu 77.2°F 57mi

* current water temperature in this city

** straight line distance from Nagoya