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Sasebo Climate by Month

The temperature in Sasebo can vary quite a bit throughout the year. Temperatures can be very warm during the warmest months, and cold during the cooler months. It also has a relatively rainy climate with high levels of precipitation. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

Visitors to Sasebo can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very warm 31°C in August to a chilly 11°C in January. Nighttime temperatures can drop, with averages reaching 5°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Sasebo is known for its substantial rainfall, with annual precipitation reaching 1920 mm. The seasons in Sasebo, bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 351 mm of precipitation. This rainfall is distributed across 18 rainy days.

In contrast, the driest month, January, experiences much less rainfall, totaling 73 mm over 19 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

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

Sunshine over the year

In Sasebo, summer days are longer and more sunny, with daily sunshine hours peaking at 7.0 hours in August. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 3.5 hours per average day.

Monthly hours of sunshine

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

Daily hours of sunshine

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

The best time of year to visit Sasebo in Japan

During the months of 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:
  • When is the rainy season in Sasebo?
    Rainy season in Sasebo occurs in the months of April, May, June, July, August and September.
  • Which is the warmest month in Sasebo?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Sasebo?
    The coldest month is January with an average maximum temperature of 11°C.
  • Which is the wettest month in Sasebo?
    June tops the wettest month list with 351 mm of rainfall.
  • Which is the driest month in Sasebo?
    January is the driest month with 73 mm of precipitation.
  • Which is the sunniest month in Sasebo?
    August is the sunniest month with an average of 209 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 Sasebo

    Sat   Dec 14
    11°C | 6°C
    NW 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Dec 15
    11°C | 5°C
    NW 18 km/h
    0.6 mm
    broken clouds and  chance of slight rain

    broken clouds and chance of slight rain

    Mon   Dec 16
    11°C | 7°C
    NW 14 km/h
    1 mm
    partly cloudy and rain

    partly cloudy and rain