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

80.8

°F

September 9, 00:27

Trend:

stable

Yesterday:

80.6°F

Tomorrow:

80.5°F

Sunrise:

05:30

Sunset:

18:09

Day Length:

12 h. 39 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 80.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.5°F lower 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 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 86.6°F on 2024, while the historical minimum was 78.7°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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 80.0°F, the minimum temperature may reach 79.6°F, and the maximum might stay at 80.5°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Aug 26 86.7°F 85.6°F 84.3°F
Aug 27 87.4°F 85.7°F 84.0°F
Aug 28 86.9°F 86.3°F 83.8°F
Aug 29 85.7°F 86.6°F 83.7°F
Aug 30 85.1°F 85.8°F 83.6°F
Aug 31 85.6°F 85.3°F 83.5°F
Sep 1 85.2°F 86.9°F 83.2°F
Sep 2 83.0°F 87.7°F 82.8°F
Sep 3 82.9°F 87.2°F 82.5°F
Sep 4 82.5°F 86.4°F 82.4°F
Sep 5 81.7°F 85.6°F 81.9°F
Sep 6 81.0°F 84.3°F 82.0°F
Sep 7 80.8°F 83.3°F 82.2°F
Sep 8 80.6°F 84.5°F 82.1°F
Sep 9 80.8°F 84.6°F 82.3°F
Sep 10 80.5°F 85.4°F 82.0°F
Sep 11 80.3°F 84.7°F 81.8°F
Sep 12 80.1°F 84.2°F 81.6°F
Sep 13 80.1°F 83.8°F 81.6°F
Sep 14 80.0°F 83.2°F 81.5°F
Sep 15 79.6°F 82.8°F 81.1°F
Sep 16 79.6°F 83.5°F 81.1°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 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 80.8°F 21mi
Tsu 79.9°F 38mi
Hamamatsu 80.2°F 57mi

* current water temperature in this city

** straight line distance from Nagoya