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

71.1

°F

June 3, 13:27

Trend:

stable

Yesterday:

70.5°F

Tomorrow:

70.8°F

Sunrise:

04:39

Sunset:

19:02

Day Length:

14 h. 23 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 71.1°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. 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

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 72.0°F on 2020, while the historical minimum was 69.0°F on 2025.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 71.9°F, with minimum temperature starting at 70.8°F, while the maximum might reach 72.6°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
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 68.8°F
May 25 69.9°F 69.8°F 68.7°F
May 26 70.7°F 69.8°F 69.1°F
May 27 72.8°F 69.6°F 69.4°F
May 28 72.6°F 69.6°F 69.5°F
May 29 71.7°F 69.7°F 69.7°F
May 30 69.7°F 69.7°F 69.2°F
May 31 69.4°F 69.7°F 69.2°F
Jun 1 70.3°F 70.1°F 69.5°F
Jun 2 70.5°F 68.6°F 69.7°F
Jun 3 71.1°F 69.0°F 70.4°F
Jun 4 70.8°F 68.9°F 70.1°F
Jun 5 71.2°F 69.0°F 70.5°F
Jun 6 71.4°F 68.9°F 70.7°F
Jun 7 71.9°F 69.2°F 71.2°F
Jun 8 72.5°F 69.5°F 71.8°F
Jun 9 72.5°F 69.6°F 71.7°F
Jun 10 72.6°F 69.7°F 71.9°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 72.4°F 21mi
Tsu 71.8°F 38mi
Hamamatsu 68.6°F 57mi

* current water temperature in this city

** straight line distance from Nagoya