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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Koshu's climate page.
Koshu Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
7°C (45°F)
Chance of Rain
33%
Precipitation
66 mm (2.6 in)
Rainy days
10 days
Humidity
65% *
Sunshine
172 hours *
Percentage Sunshine
*
Best Places in Japan in December
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in December →
perfect weather
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tolerable
unpleasant
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What to Wear in Koshu in December
Dress warmly and in layers for your trip to Koshu in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Koshu in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Koshu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koshu climate overview or explore weather in Japan.
