Weather in Iwamizawa in December
Iwamizawa, Japan averages a high of -0.7°C (30.7°F) and low of -7.7°C (18.1°F) in December, with 16 rain days and 6.3 hours of daily sunshine. Travel score: 32.1/100 (Poor). The best time to visit Iwamizawa is July.
High
-1°C31°F
Low
-8°C18°F
🌧️
16
rain days
☀️
6.3
hrs/day sunshine
💧
79%
humidity
32— Poor
December in Iwamizawa is freezing and rainy — challenging weather conditions.
What are the average temperatures in Iwamizawa?
How much does it rain in Iwamizawa in December?
Iwamizawa receives an average of 74.2mm of rainfall across 16 rainy days in December. The annual total is 1066.1mm.
What should I pack for Iwamizawa in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around -1°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧥
Waterproof jacket
Frequent rain expected (16 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧤
Warm gloves
Cold nights around -8°C
🧣
Warm scarf
Protect against cold winds
Traveling to Japan in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31