ClimateForecastDecemberJanuary >>

Onjuku Climate by Month

Onjuku experiences great temperature shifts. The city's weather can transition from warm days to cold weather. 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 climate in Onjuku is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 30°C in August. In February, the coolest month of the year, temperatures drop to a chilly 12°C. At night, expect cooler temperatures, averaging 6°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Onjuku has a notably wet climate with abundant precipitation, recording 1790 mm of rainfall per year. Onjuku can be quite wet during October, receiving approximately 232 mm of precipitation over 17 rainy days.

In contrast December, experiences much drier conditions, with 100 mm of rainfall, spread across 12 rainy days.

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

Sunshine over the year

Onjuku experiences moderate variation in sunshine hours across the seasons. With 6.4 hours daily sunshine in January, it dips to 4.1 hours in June, offering a balanced mix of sunny and overcast days.

Monthly hours of sunshine

Data from: Chiba, Japan (49 KM, 30 Miles).

Daily hours of sunshine

Data from: Chiba, Japan (49 KM, 30 Miles).

The best time of year to visit Onjuku in Japan

During the months of May, June and October 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:
  • When is summer in Onjuku?
    The hottest season / summer takes place in June, July, August and September.
  • When is the rainy season in Onjuku?
    Rainy season in Onjuku occurs in the months of March, June, September and October.
  • Which is the warmest month in Onjuku?
    August has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Onjuku?
    The coldest month is February with an average maximum temperature of 12°C.
  • Which is the wettest month in Onjuku?
    October tops the wettest month list with 232 mm of rainfall.
  • Which is the driest month in Onjuku?
    December is the driest month with 100 mm of precipitation.
  • Which is the sunniest month in Onjuku?
    January is the sunniest month with an average of 193 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 Onjuku

    Sat   Dec 14
    12°C | 2°C
    N 29 km/h
    1.1 mm
    partly cloudy and small chance of slight rain

    partly cloudy and small chance of slight rain

    Sun   Dec 15
    13°C | 1°C
    W 18 km/h
    clear and no rain

    clear and no rain

    Mon   Dec 16
    13°C | 3°C
    N 7 km/h
    almost clear and no rain

    almost clear and no rain