ClimateForecastNovemberDecember >>

Onna Climate by Month

Temperatures in Onna experience a moderate degree of variance through the seasons. Days can be very warm, while the cooler months tend to be pleasant. It also experiences much rainfall throughout the year. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

The weather in Onna changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a very warm 30°C in August. In February, the coolest month of the year, temperatures drop to a pleasant 20°C. At night, expect cooler temperatures, averaging 17°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Onna has a notably wet climate with abundant precipitation, recording 1881 mm of rainfall per year. Onna can be quite wet during June, receiving approximately 237 mm of precipitation over 19 rainy days. In contrast November, experiences much drier conditions, with 107 mm of rainfall, spread across 19 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Onna can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.0 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 2.9 hours of sunlight per day.

Monthly hours of sunshine

Data from: Naha, Japan (36 KM, 22 Miles).

Daily hours of sunshine

Data from: Naha, Japan (36 KM, 22 Miles).

The best time of year to visit Onna in Japan

During the months of January, February, March, April, May, November and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Onna?
    Most rainfall (rainy season) is seen in April, May, June, August, September and October.
  • Which is the warmest month in Onna?
    August has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Onna?
    The coldest month is February with an average maximum temperature of 20°C.
  • Which is the wettest month in Onna?
    June tops the wettest month list with 237 mm of rainfall.
  • Which is the driest month in Onna?
    November is the driest month with 107 mm of precipitation.
  • Which is the sunniest month in Onna?
    July is the sunniest month with an average of 240 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Onna

    Fri   Nov 22
    23°C | 19°C
    N 25 km/h
    broken clouds and no rain

    broken clouds and no rain

    Sat   Nov 23
    23°C | 18°C
    N 25 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    23°C | 18°C
    NE 18 km/h
    almost clear and no rain

    almost clear and no rain