Koshu Weather in December

December in Koshu typically sees daytime highs of 7°C (45°F) and nighttime lows of -2°C (28°F). With the least snow/rainfall of the year, it's a reliably dry month. It falls within the winter season.

Rainfall in Koshu in December

The month is known for having the least rain of the year. The dry conditions are worth making the most of, even if you'll want a warm layer. You can expect snow/rain on around 10 days based on historical patterns, with 66 mm (2.6 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Koshu in December

In December, expect low temperatures in Koshu, with highs of 7°C (45°F) and lows of -2°C (28°F) at night. December marks the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. Nights are well below freezing at -2°C (28°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation.

Sunshine in Koshu in December

The area experiences a moderate amount of sunshine, with approximately 172 hours of sunlight expected. This means a decent mix of sun and overcast.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Koshu. Our weather planner can help you explore destinations with more pleasant weather conditions.