Kumamoto Weather in December
Thinking of visiting Kumamoto in December? Expect moderate temperatures reaching 13°C (55°F) during the day, dropping to 5°C (41°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Kumamoto in December
Typically, you can expect about 16 days of rain this month, with 87 mm (3.4 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Kumamoto in December
If you're visiting Kumamoto in December, expect highs of 13°C (55°F) and overnight lows around 5°C (41°F). December is in the winter season. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Kumamoto in December
The area enjoys a moderate level of sunlight, with around 144 hours. It's a good balance between sunny and cloudy days.If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Kumamoto's climate page.
Kumamoto Temperature in December
Min Temperature
5°C (41°F)
Max Temperature
13°C (55°F)
Chance of Rain
54%
Precipitation
87 mm (3.4 in)
Rainy days
16 days
Humidity
71%
Sunshine
144 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kumamoto typically drop from around 14°C (57°F) at the start of December to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°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 Kumamoto in December
Browse day-by-day weather records for Kumamoto spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kumamoto historical weather extremes in December
Our historical data for Kumamoto spans 1976 to 2025, revealing these weather extremes.
- On December 4, 2018, temperatures climbed to 23°C (73°F), marking the warmest December day on record.
- The coldest December day was on December 27, 1976, with a maximum of 1°C (34°F).
- Nighttime temperatures dropped to -7°C (19°F) on December 31, 2020, 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
pleasant
tolerable
unpleasant
poor
What to Wear in Kumamoto in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Kumamoto 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 Kumamoto's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kumamoto climate overview or explore weather in Japan.
