Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Nakatsu, Japan

An excellent water temperature of 25.3°C (77.5°F) makes Septiembre in Nakatsu, Japan, a prime for swimming and other water activities.

Sea temperature

In Nakatsu, the average seawater temperature is 25.3°C (77.5°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.


In Nakatsu, the average length of the day in Septiembre is 12.4h.

What is the sea water temperature in Septiembre in Nakatsu?

In Septiembre, the average sea temperature in Nakatsu is 25.3°C (77.5°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Nakatsu have in Septiembre?

The average length of the day in Septiembre in Nakatsu, Japan, is 12.4h.
Average sea temperature in September - Nakatsu, Japan
  • Average sea temperature in September: 25.3°C

The best month for swimming (with the highest average sea temperature) is August (26.5°C).
The coldest month (with the lowest average sea temperature) is February (11.8°C).

Average daylight in September - Nakatsu, Japan
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 10h).