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

82.5

°F

August 6, 08:15

Trend:

stable

Yesterday:

82.2°F

Tomorrow:

82.4°F

Sunrise:

05:05

Sunset:

18:52

Day Length:

13 h. 47 min.

Nagoya in August

Minimum:

54.2°F

Average:

55.9°F

Maximum:

59.7°F

Sea water temperature in Nagoya today

As of now, in Nagoya, the water temperature is 82.5°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 2.2°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 stay about the same.

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 87.6°F on 2025, while the historical minimum was 81.4°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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Nagoya

Date Current Year

actual* / forecast**

last year 10 years average
Jul 23 87.0°F 83.5°F 82.8°F
Jul 24 84.8°F 84.5°F 82.9°F
Jul 25 85.6°F 85.9°F 83.0°F
Jul 26 84.3°F 86.2°F 83.2°F
Jul 27 86.6°F 87.2°F 83.5°F
Jul 28 85.8°F 87.2°F 83.4°F
Jul 29 87.3°F 87.1°F 83.7°F
Jul 30 85.9°F 86.9°F 83.4°F
Jul 31 84.4°F 84.4°F 82.9°F
Aug 1 83.8°F 86.6°F 83.3°F
Aug 2 84.7°F 87.3°F 83.7°F
Aug 3 83.7°F 86.3°F 83.6°F
Aug 4 83.0°F 86.8°F 83.9°F
Aug 5 82.2°F 87.8°F 84.4°F
Aug 6 82.5°F 87.6°F 84.7°F
Aug 7 82.4°F 88.6°F 84.7°F
Aug 8 82.7°F 88.0°F 84.9°F
Aug 9 82.4°F 87.7°F 84.6°F
Aug 10 81.9°F 87.3°F 84.1°F
Aug 11 81.5°F 86.8°F 83.7°F
Aug 12 82.1°F 85.2°F 84.3°F
Aug 13 81.9°F 84.8°F 84.1°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 81.4°F 21mi
Tsu 79.9°F 38mi
Hamamatsu 80.0°F 57mi

* current water temperature in this city

** straight line distance from Nagoya