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

75.3

°F

October 19, 02:17

Trend:

decreasing

Yesterday:

75.7°F

Tomorrow:

75.0°F

Sunrise:

06:01

Sunset:

17:13

Day Length:

11 h. 12 min.

Nagoya in October

Minimum:

52.6°F

Average:

55.4°F

Maximum:

59.2°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 75.3°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.9°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 75.8°F on 2024, while the historical minimum was 71.4°F on 2020.

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 shows a gradual cooling trend. The average temperature is expected to be 73.9°F, the minimum temperature may reach 72.7°F, and the maximum might stay at 75.0°F.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Oct 5 75.6°F 75.0°F 75.6°F
Oct 6 76.7°F 76.5°F 76.1°F
Oct 7 76.7°F 76.2°F 75.9°F
Oct 8 75.4°F 75.2°F 75.3°F
Oct 9 75.3°F 78.5°F 75.4°F
Oct 10 74.6°F 77.8°F 75.0°F
Oct 11 74.9°F 77.2°F 74.6°F
Oct 12 75.4°F 76.6°F 74.5°F
Oct 13 75.9°F 77.5°F 74.7°F
Oct 14 76.3°F 77.1°F 74.2°F
Oct 15 75.0°F 76.4°F 73.9°F
Oct 16 74.7°F 75.5°F 73.8°F
Oct 17 76.7°F 74.9°F 74.0°F
Oct 18 75.7°F 74.0°F 73.8°F
Oct 19 75.3°F 74.5°F 73.4°F
Oct 20 75.0°F 75.1°F 73.1°F
Oct 21 74.7°F 74.5°F 72.8°F
Oct 22 74.1°F 73.9°F 72.2°F
Oct 23 73.8°F 73.4°F 71.9°F
Oct 24 73.5°F 71.1°F 71.6°F
Oct 25 73.5°F 70.7°F 71.6°F
Oct 26 72.7°F 70.4°F 70.8°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, 79.4°F in Summer, and 73.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Hekinan 75.3°F 21mi
Tsu 72.2°F 38mi
Hamamatsu 74.6°F 57mi

* current water temperature in this city

** straight line distance from Nagoya