Oshima Weather in December

During December, Oshima experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 11°C (52°F). As the driest month of the year, rainfall is at its lowest.

Rainfall in Oshima in December

This month sees the least rain of the year, making it well suited for outdoor adventures. Typically around 12 days of rainfall are expected, averaging 107 mm (4.2 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Oshima in December

If you're visiting Oshima in December, expect highs of 15°C (59°F) and overnight lows around 11°C (52°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

If your ideal day consists of dry skies and pleasant temperatures, August typically offers the best circumstances for Oshima.