Average water temperature in Isahaya

The mean water temperature over the year in Isahaya (Nagasaki), Japan.

* Data from: Nagasaki, Japan (23 KM, 14 Miles).

On average, August has the warmest water temperature with 27°C.
On average, February has the coldest water temperature with 14°C.

Weather Forecasts for Isahaya

Fri May 03

24°C | 12°C

7 km/h

almost clear and no rain

hourly forecast

Sat May 04

25°C | 15°C

7 km/h

almost clear and no rain

hourly forecast

Sun May 05

25°C | 14°C

14 km/h

broken clouds and no rain

hourly forecast

5-Day Forecast 10-Day Forecast

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Isahaya.

Our site offers climate and forecast data for every country in the world. Are you going to Japan? On this website you can find historical weather averages for many cities in Japan. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.

Travel Inspiration

Chase the autumn leaves in Japan

Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.

Watch Jigokudani's snow monkeys

The best time to visit the snow monkeys is in winter, especially in the months of November till March. During these winter months the temperature can drop to -7 degrees (32 degrees Fahrenheit).

Walk the 88 temple circuit

We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.

The famous bamboo forests of Arashiyama

The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.

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