All data are in degrees Fahrenheit

en

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

85.5

°F

August 18, 18:55

Trend:

stable

Yesterday:

84.9°F

Tomorrow:

85.1°F

Sunrise:

05:14

Sunset:

18:38

Day Length:

13 h. 24 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 85.5°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 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

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 87.9°F on 2023, while the historical minimum was 82.0°F on 2018.

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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 85.2°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
Aug 4 83.0°F 86.8°F 83.9°F
Aug 5 82.2°F 87.8°F 84.2°F
Aug 6 83.1°F 87.6°F 84.5°F
Aug 7 84.4°F 88.6°F 84.6°F
Aug 8 84.3°F 88.0°F 84.8°F
Aug 9 84.3°F 87.7°F 84.6°F
Aug 10 85.1°F 87.4°F 84.3°F
Aug 11 85.4°F 87.1°F 83.9°F
Aug 12 83.2°F 85.2°F 84.2°F
Aug 13 82.4°F 84.8°F 83.9°F
Aug 14 81.6°F 84.2°F 84.1°F
Aug 15 83.1°F 82.6°F 84.1°F
Aug 16 84.6°F 83.7°F 84.5°F
Aug 17 84.9°F 86.3°F 84.7°F
Aug 18 85.5°F 87.0°F 84.7°F
Aug 19 85.1°F 85.3°F 84.3°F
Aug 20 85.1°F 86.0°F 84.2°F
Aug 21 84.9°F 86.9°F 84.1°F
Aug 22 85.5°F 89.0°F 84.6°F
Aug 23 85.4°F 87.4°F 84.6°F
Aug 24 85.3°F 86.5°F 84.5°F
Aug 25 85.1°F 85.9°F 84.3°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 83.5°F 21mi
Tsu 81.8°F 38mi
Hamamatsu 80.6°F 57mi

* current water temperature in this city

** straight line distance from Nagoya