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

64.1

°F

May 3, 21:23

Trend:

decreasing

Yesterday:

64.5°F

Tomorrow:

63.8°F

Sunrise:

05:00

Sunset:

18:39

Day Length:

13 h. 39 min.

Nagoya in May

Minimum:

54.0°F

Average:

56.3°F

Maximum:

60.7°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 64.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.0°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. 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 65.7°F on 2021, while the historical minimum was 61.1°F on 2025.

Over the last two weeks, the water temperature has stayed slightly above 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 65.2°F, with minimum temperature starting at 63.8°F, while the maximum might reach 66.0°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Apr 19 62.4°F 61.7°F 60.4°F
Apr 20 64.7°F 61.8°F 60.3°F
Apr 21 64.4°F 64.3°F 60.9°F
Apr 22 62.1°F 62.8°F 61.0°F
Apr 23 61.9°F 63.0°F 61.4°F
Apr 24 62.2°F 63.3°F 61.6°F
Apr 25 62.7°F 62.0°F 61.6°F
Apr 26 62.6°F 61.1°F 61.7°F
Apr 27 62.4°F 59.7°F 61.7°F
Apr 28 62.6°F 59.9°F 61.7°F
Apr 29 62.3°F 60.9°F 62.0°F
Apr 30 63.0°F 58.2°F 61.7°F
May 1 63.4°F 60.7°F 62.2°F
May 2 64.5°F 61.0°F 62.7°F
May 3 64.1°F 61.1°F 63.2°F
May 4 63.8°F 61.8°F 62.9°F
May 5 64.3°F 61.9°F 63.3°F
May 6 65.2°F 62.2°F 64.2°F
May 7 65.6°F 62.6°F 64.6°F
May 8 65.8°F 61.1°F 64.8°F
May 9 66.0°F 61.3°F 65.0°F
May 10 65.7°F 61.0°F 64.7°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 64.9°F 21mi
Tsu 61.8°F 38mi
Hamamatsu 63.4°F 57mi

* current water temperature in this city

** straight line distance from Nagoya