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Oshima Weather and Climate: A Comprehensive Guide

Oshima experiences great temperature shifts. The city's weather can transition from warm days to mild weather. It also has a notably wet climate with much precipitation. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

The climate in Oshima is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 28°C in August, the warmest time of the year, to a moderate 12°C during cooler months like February.

At night, temperatures typically drop to an average of around 8°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Oshima has a notably wet climate with abundant precipitation, recording 2191 mm of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, June receives heavy rainfall, averaging 276 mm of precipitation, recorded across 20 rainy days. In contrast, the drier season, December brings less rainfall, with 107 mm over 12 rainy days. For more details, please visit our Oshima Precipitation page.

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

Forecast for Oshima

Wed   Jan 15
14°C | 6°C
W 10 m/s
partly cloudy and no rain

partly cloudy and no rain

Thu   Jan 16
9°C | 5°C
W 5 m/s
broken clouds and no rain

broken clouds and no rain

Fri   Jan 17
11°C | 5°C
NE 5 m/s
broken clouds and no rain

broken clouds and no rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Oshima 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:
  • Which is the warmest month in Oshima?
    August has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Oshima?
    The coldest month is February with an average maximum temperature of 12°C.
  • Which is the wettest month in Oshima?
    June tops the wettest month list with 276 mm of rainfall.
  • Which is the driest month in Oshima?
    December is the driest month with 107 mm of precipitation.

  • 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.