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

57.2

°F

December 19, 22:04

Trend:

stable

Yesterday:

56.7°F

Tomorrow:

56.7°F

Sunrise:

06:55

Sunset:

16:43

Day Length:

9 h. 48 min.

Nagoya in December

Minimum:

52.4°F

Average:

55.2°F

Maximum:

58.9°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 57.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.1°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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 60.4°F on 2015, while the historical minimum was 56.8°F on 2017.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 56.4°F, the minimum temperature may reach 56.1°F, and the maximum might stay at 56.7°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Dec 5 62.5°F 64.7°F 63.3°F
Dec 6 62.4°F 64.0°F 62.9°F
Dec 7 61.2°F 63.0°F 62.5°F
Dec 8 60.3°F 62.8°F 61.9°F
Dec 9 59.9°F 62.3°F 61.7°F
Dec 10 60.2°F 62.2°F 61.3°F
Dec 11 59.8°F 61.6°F 61.1°F
Dec 12 59.6°F 61.5°F 61.0°F
Dec 13 59.1°F 61.1°F 60.7°F
Dec 14 59.0°F 60.6°F 60.5°F
Dec 15 57.9°F 60.4°F 60.4°F
Dec 16 58.1°F 59.9°F 60.2°F
Dec 17 56.4°F 59.8°F 59.7°F
Dec 18 56.7°F 59.7°F 59.5°F
Dec 19 57.2°F 58.2°F 59.3°F
Dec 20 56.7°F 59.1°F 58.8°F
Dec 21 56.4°F 59.2°F 58.5°F
Dec 22 56.4°F 59.2°F 58.5°F
Dec 23 56.3°F 59.1°F 58.4°F
Dec 24 56.1°F 59.1°F 58.2°F
Dec 25 56.2°F 59.2°F 58.3°F
Dec 26 56.3°F 59.3°F 58.4°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 September offer comfortable swimming conditions, which amounts to 123 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 73.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Hekinan 57.8°F 21mi
Tsu 55.4°F 38mi
Hamamatsu 62.2°F 57mi

* current water temperature in this city

** straight line distance from Nagoya