Mount Haku Weather in December
Thinking of visiting Mount Haku in December? Expect low temperatures reaching 5°C (41°F) during the day, dropping to -4°C (25°F) at night. Heavy showers are common during the rainy season.
Rainfall in Mount Haku in December
Mount Haku is in the rainy season in December, with rain on around 25 days and an average of 196 mm (7.7 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Mount Haku in December
Expect highs of 5°C (41°F) in Mount Haku in December, with nights dropping to around -4°C (25°F). December is a notable month of the winter season. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. At -4°C (25°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating.
Sunshine in Mount Haku in December
This month is characterized by fewer sunny days, with about 71 hours of sunshine. It's great for those who appreciate cooler, less sunny days.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Mount Haku. 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 Mount Haku's climate page.
Mount Haku Temperature in December
Min Temperature
-4°C (25°F)
Max Temperature
5°C (41°F)
Chance of Rain
85%
Precipitation
196 mm (7.7 in)
Rainy days
25 days
Humidity
81% *
Sunshine
71 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mount Haku typically drop from around 11°C (52°F) at the start of December to approximately 7°C (45°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 5°C (41°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Mount Haku in December
Browse day-by-day weather records for Mount Haku spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Haku historical weather extremes in December
Based on 49 years of weather observations in Mount Haku between 1976 and 2025, these are the recorded extremes.
- Mount Haku recorded its highest December temperature of 22°C (72°F) on December 4, 2018.
- The lowest daytime temperature in December was -1°C (30°F), recorded on December 26, 1995.
- Nighttime temperatures dropped to -7°C (19°F) on December 27, 2012, marking the coldest December night on record.
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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What to Wear in Mount Haku in December
We recommend to layer up for chilly conditions in Mount Haku in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Mount Haku 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 Mount Haku's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mount Haku climate overview or explore weather in Japan.
