ClimateForecastDecemberJanuary >>

Kosai Climate by Month

The temperature in Kosai can vary greatly throughout the year. The temperatures shift from very warm to cold. It also experiences much rainfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

Depending on the time of the year, temperatures range from very warm to chilly in Kosai. Average daytime temperatures reach a very warm 32°C in August. In January, the coolest month of the year, temperatures drop to a chilly 11°C. At night, expect cooler temperatures, averaging 3°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Kosai has a relatively rainy climate with high precipitation levels, averaging 1985 mm of rainfall annually. Kosai can be quite wet during June, receiving approximately 264 mm of precipitation over 18 rainy days.

In contrast January, experiences much drier conditions, with 71 mm of rainfall, spread across 11 rainy days.

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

Sunshine over the year

Kosai experiences moderate variation in sunshine hours across the seasons. With 7.1 hours daily sunshine in August, it dips to 5.0 hours in June, offering a balanced mix of sunny and overcast days.

Monthly hours of sunshine

Data from: Hamamatsu, Japan (18 KM, 11 Miles).

Daily hours of sunshine

Data from: Hamamatsu, Japan (18 KM, 11 Miles).

The best time of year to visit Kosai in Japan

During the months of April, May 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:
  • Which is the warmest month in Kosai?
    August has an average maximum temperature of 32°C and is the warmest month of the year.
  • Which is the coldest month in Kosai?
    The coldest month is January with an average maximum temperature of 11°C.
  • Which is the wettest month in Kosai?
    June tops the wettest month list with 264 mm of rainfall.
  • Which is the driest month in Kosai?
    December is the driest month with 71 mm of precipitation.
  • Which is the sunniest month in Kosai?
    August is the sunniest month with an average of 212 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 Kosai

    Thu   Dec 12
    11°C | 3°C
    NW 25 km/h
    clear and no rain

    clear and no rain

    Fri   Dec 13
    12°C | 1°C
    W 11 km/h
    0.4 mm
    broken clouds and slight rain

    broken clouds and slight rain

    Sat   Dec 14
    12°C | 3°C
    NW 22 km/h
    clear and no rain

    clear and no rain