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

69.4

°F

May 25, 11:32

Trend:

stable

Yesterday:

69.6°F

Tomorrow:

69.8°F

Sunrise:

04:42

Sunset:

18:56

Day Length:

14 h. 14 min.

Nagoya in June

Minimum:

54.1°F

Average:

56.2°F

Maximum:

60.6°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 69.4°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 0.8°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 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 70.3°F on 2022, while the historical minimum was 65.9°F on 2024.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 70.0°F, with minimum temperature starting at 69.8°F, while the maximum might reach 70.3°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
May 11 64.2°F 61.1°F 64.9°F
May 12 65.4°F 61.1°F 64.9°F
May 13 65.8°F 62.3°F 65.0°F
May 14 67.5°F 63.9°F 65.4°F
May 15 68.4°F 66.4°F 65.8°F
May 16 67.9°F 66.7°F 65.8°F
May 17 69.3°F 66.8°F 66.3°F
May 18 69.7°F 67.1°F 66.8°F
May 19 70.9°F 67.2°F 67.2°F
May 20 73.2°F 67.0°F 67.4°F
May 21 71.5°F 67.0°F 67.7°F
May 22 71.2°F 67.0°F 67.9°F
May 23 70.7°F 69.7°F 68.5°F
May 24 69.6°F 69.8°F 68.7°F
May 25 69.4°F 69.8°F 68.6°F
May 26 69.8°F 69.8°F 68.9°F
May 27 69.9°F 69.6°F 69.0°F
May 28 70.0°F 69.6°F 69.2°F
May 29 70.3°F 69.7°F 69.5°F
May 30 69.9°F 69.7°F 69.1°F
May 31 70.0°F 69.7°F 69.2°F
Jun 1 70.3°F 70.1°F 69.5°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 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 70.8°F 21mi
Tsu 68.8°F 38mi
Hamamatsu 68.4°F 57mi

* current water temperature in this city

** straight line distance from Nagoya