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

77.6

°F

July 12, 23:54

Trend:

stable

Yesterday:

78.5°F

Tomorrow:

78.1°F

Sunrise:

04:47

Sunset:

19:09

Day Length:

14 h. 22 min.

Nagoya in July

Minimum:

53.9°F

Average:

55.8°F

Maximum:

60.1°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 77.6°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.4°F lower 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 rise 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 84.0°F on 2025, while the historical minimum was 77.5°F on 2019.

Over the last two weeks, the water temperature has stayed slightly lower 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 78.5°F, with minimum temperature starting at 78.0°F, while the maximum might reach 79.0°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Jun 28 76.2°F 78.0°F 76.3°F
Jun 29 77.1°F 76.9°F 76.6°F
Jun 30 75.9°F 79.4°F 76.9°F
Jul 1 76.3°F 82.3°F 77.4°F
Jul 2 76.6°F 82.1°F 77.6°F
Jul 3 76.4°F 81.1°F 77.6°F
Jul 4 76.3°F 81.5°F 77.9°F
Jul 5 77.1°F 81.8°F 78.2°F
Jul 6 77.0°F 82.4°F 78.4°F
Jul 7 76.8°F 82.8°F 78.5°F
Jul 8 76.6°F 82.7°F 79.0°F
Jul 9 77.3°F 84.0°F 79.4°F
Jul 10 77.9°F 84.6°F 79.5°F
Jul 11 78.5°F 85.2°F 79.6°F
Jul 12 77.6°F 84.0°F 80.0°F
Jul 13 78.1°F 85.3°F 80.5°F
Jul 14 78.0°F 84.7°F 80.5°F
Jul 15 78.3°F 84.1°F 80.7°F
Jul 16 78.4°F 82.8°F 80.8°F
Jul 17 78.7°F 82.6°F 81.2°F
Jul 18 78.8°F 82.2°F 81.2°F
Jul 19 79.0°F 82.2°F 81.4°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, 79.3°F in Summer, and 73.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Hekinan 78.0°F 21mi
Tsu 77.5°F 38mi
Hamamatsu 76.0°F 57mi

* current water temperature in this city

** straight line distance from Nagoya