Last updated: August 23, 2025
In December, the average temperature in Yoichi, Japan hovers around -1°C (30°F), with extremes ranging from a chilly -11°C (13°F) to a milder 12°C (53°F). Expect 146 mm (5.7 in) of precipitation spread over 27 days, resulting in an average humidity level of 80%. Prepare for a brisk, wet month!
In December in Yoichi, the average temperature is -1°C (30°F), with maximums reaching 12°C (53°F) and minimums dropping as low as -11°C (13°F). It's a perfect time for travelers to experience the winter landscapes but be sure to bundle up for the chilly nights.
In Yoichi in December, the precipitation amount is 146 mm (5.7 in) spread over 27 days.
In Yoichi in December, humidity is 80%. With an average temperature of -1°C (30°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and travel quite challenging.
In Yoichi 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 Yoichi, you can visit Hourly UV Index in Yoichi.
UV Risk Categories
Weather in Yoichi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Yoichi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 93 mm (3.7 inches) | 84% | low |
| February Weather | -3°C (27°F) | 103 mm (4.0 inches) | 83% | moderate |
| March Weather | 1°C (35°F) | 93 mm (3.7 inches) | 81% | moderate |
| April Weather | 5°C (42°F) | 76 mm (3.0 inches) | 81% | high |
| May Weather | 12°C (53°F) | 83 mm (3.3 inches) | 86% | very high |
| June Weather | 15°C (59°F) | 99 mm (3.9 inches) | 87% | very high |
| July Weather | 20°C (69°F) | 78 mm (3.1 inches) | 93% | very high |
| August Weather | 21°C (71°F) | 149 mm (5.9 inches) | 95% | very high |
| September Weather | 18°C (65°F) | 106 mm (4.2 inches) | 88% | very high |
| October Weather | 12°C (54°F) | 146 mm (5.8 inches) | 83% | moderate |
| November Weather | 5°C (42°F) | 170 mm (6.7 inches) | 79% | moderate |
| December Weather | -1°C (30°F) | 146 mm (5.7 inches) | 80% | low |