Weather in Iwamizawa in January
Iwamizawa, Japan averages a high of -3.5°C (25.7°F) and low of -10.7°C (12.7°F) in January, with 13 rain days and 6.8 hours of daily sunshine. Travel score: 34.9/100 (Poor). The best time to visit Iwamizawa is July.
High
-3°C26°F
Low
-11°C13°F
🌧️
13
rain days
☀️
6.8
hrs/day sunshine
💧
79%
humidity
35— Poor
January in Iwamizawa is freezing and occasionally wet — challenging weather conditions.
What are the average temperatures in Iwamizawa?
How much does it rain in Iwamizawa in January?
Iwamizawa receives an average of 53.7mm of rainfall across 13 rainy days in January. The annual total is 1066.1mm.
What should I pack for Iwamizawa in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around -3°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -11°C
🧣
Warm scarf
Protect against cold winds
Traveling to Japan in January?
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