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

86.7

°F

August 30, 04:14

Trend:

stable

Yesterday:

86.6°F

Tomorrow:

86.6°F

Sunrise:

05:23

Sunset:

18:23

Day Length:

13 h. 0 min.

Nagoya in September

Minimum:

53.0°F

Average:

55.8°F

Maximum:

59.7°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 86.7°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 3.9°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 stay about the same.

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 maximum temperature for this date. The maximum temperature recorded for this date was 85.5°F on 2023, while the historical minimum was 79.0°F on 2015.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 85.7°F, the minimum temperature may reach 85.1°F, and the maximum might stay at 86.6°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Aug 16 83.7°F 87.7°F 84.3°F
Aug 17 86.3°F 87.0°F 84.5°F
Aug 18 87.0°F 87.8°F 84.4°F
Aug 19 85.3°F 88.2°F 84.1°F
Aug 20 86.0°F 87.5°F 84.0°F
Aug 21 86.9°F 87.0°F 83.9°F
Aug 22 89.0°F 88.1°F 84.4°F
Aug 23 87.4°F 87.7°F 84.4°F
Aug 24 86.5°F 87.6°F 84.2°F
Aug 25 85.9°F 87.1°F 84.0°F
Aug 26 85.6°F 87.6°F 83.7°F
Aug 27 85.7°F 86.8°F 83.2°F
Aug 28 86.3°F 85.8°F 83.1°F
Aug 29 86.6°F 85.2°F 82.7°F
Aug 30 86.7°F 84.7°F 82.8°F
Aug 31 86.6°F 84.1°F 82.7°F
Sep 1 86.1°F 83.5°F 82.2°F
Sep 2 85.9°F 83.8°F 82.0°F
Sep 3 85.6°F 83.3°F 81.7°F
Sep 4 85.5°F 81.5°F 81.6°F
Sep 5 85.1°F 80.8°F 81.2°F
Sep 6 85.4°F 83.3°F 81.5°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 September offer comfortable swimming conditions, which amounts to 120 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 16, 2018, dipping to 47.6°F. The average readings by season are 56.3°F in Winter, 60.2°F in Spring, 79.1°F in Summer, and 73.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Hekinan 85.0°F 21mi
Tsu 84.6°F 38mi
Hamamatsu 80.2°F 57mi

* current water temperature in this city

** straight line distance from Nagoya