Hamamatsu Weather in December
During December, Hamamatsu experiences moderate daytime temperatures of 14°C (57°F) and cooler nights around 6°C (43°F). As the driest month of the year, and part of the winter season, rainfall is at its lowest.
Rainfall in Hamamatsu in December
Dry conditions dominate this month. A good time for outdoor fun and exploration, even if the temperatures are on the cool side. Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 75 mm (3 in) on average. 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 Hamamatsu in December
Hamamatsu in December gets highs of 14°C (57°F) during the day and drops to 6°C (43°F) at night. December marks the winter season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Hamamatsu in December
Expect sunny days throughout the month, with an estimated 203 hours of sunshine. Despite the cool temperatures, the sunny skies make it a pleasant time to visit Hamamatsu.For Hamamatsu itself, April generally stands out with 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 Hamamatsu's climate page.
Hamamatsu Temperature in December
Min Temperature
6°C (43°F)
Max Temperature
14°C (57°F)
Chance of Rain
32%
Precipitation
75 mm (3 in)
Rainy days
10 days
Humidity
62%
Sunshine
203 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hamamatsu typically drop from around 15°C (59°F) at the start of December to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 7°C (45°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 Hamamatsu in December
Browse day-by-day weather records for Hamamatsu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hamamatsu historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Hamamatsu.
- Hamamatsu recorded its highest December temperature of 22°C (72°F) on December 11, 2015.
- Hamamatsu experienced its chilliest December day on December 27, 1976, reaching only 2°C (36°F).
- The coldest night in December in Hamamatsu was on December 30, 1976, with a minimum of -4°C (25°F).
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 Hamamatsu 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Hamamatsu 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 Hamamatsu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hamamatsu climate overview or explore weather in Japan.
