Last updated: August 23, 2025
Average Temperature in Wassamu, Japan during December experiences a chilly -5°C (24°F), with minimums plunging to -20°C (-4°F) and maximums reaching a mild 12°C (54°F). The region also sees 127 mm (5.0 in) of precipitation spread over 27 days, coupled with an average humidity of 80%. Embrace the cool and wet conditions!
In December in Wassamu, the average temperature is -5°C (24°F), with maximums reaching 12°C (54°F) and minimums dropping to as low as -20°C (-4°F). Travelers should be prepared for cold conditions and dress warmly to fully enjoy their visit.
In Wassamu in December, the precipitation amount is 127 mm (5.0 in) spread over 27 days, indicating a significant amount of rainfall during that time.
In Wassamu in December, humidity is 80%. With an average temperature of -5°C (24°F), this humidity feels like an invisible chill that seeps into your bones, making it difficult to enjoy outdoor activities and necessitating extra layers for comfort as you travel.
In Wassamu in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Wassamu, you can visit Hourly UV Index in Wassamu.
UV Risk Categories
Weather in Wassamu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Wassamu, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 69 mm (2.7 inches) | 84% | low |
| February Weather | -7°C (21°F) | 88 mm (3.5 inches) | 83% | moderate |
| March Weather | -1°C (31°F) | 92 mm (3.6 inches) | 81% | high |
| April Weather | 5°C (42°F) | 75 mm (3.0 inches) | 81% | high |
| May Weather | 12°C (54°F) | 101 mm (4.0 inches) | 86% | very high |
| June Weather | 15°C (59°F) | 98 mm (3.8 inches) | 87% | very high |
| July Weather | 20°C (68°F) | 126 mm (4.9 inches) | 93% | very high |
| August Weather | 20°C (68°F) | 191 mm (7.5 inches) | 95% | very high |
| September Weather | 16°C (61°F) | 92 mm (3.6 inches) | 88% | very high |
| October Weather | 9°C (49°F) | 153 mm (6.0 inches) | 83% | moderate |
| November Weather | 3°C (37°F) | 159 mm (6.2 inches) | 79% | moderate |
| December Weather | -5°C (24°F) | 127 mm (5.0 inches) | 80% | low |