Last updated: August 23, 2025
In December, the average temperature in Shimo-furano, Japan hovers around -7°C (21°F), with a minimum of -22°C (-8°F) and a maximum reaching 11°C (53°F). Expect precipitation totaling approximately 106 mm (4.2 in) spread across 24 days, and be prepared for high humidity levels averaging around 80%.
In December in Shimo-furano, the average temperature is -7°C (21°F). The maximum can reach 11°C (53°F), while the minimum can drop as low as -22°C (-8°F). Be sure to pack warm clothing and prepare for significant temperature fluctuations if you're planning to travel during this time.
In Shimo-furano in December, the total precipitation amount is 106 mm (4.2 in) spread over the course of 24 days.
In Shimo-furano in December, humidity is 80%. With an average temperature of -7°C (21°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers to stay warm and dry while traveling.
In Shimo-furano 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 Shimo-furano, you can visit Hourly UV Index in Shimo-furano.
UV Risk Categories
Weather in Shimo-furano varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Shimo-furano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 61 mm (2.4 inches) | 84% | low |
| February Weather | -8°C (18°F) | 81 mm (3.2 inches) | 83% | moderate |
| March Weather | -2°C (29°F) | 98 mm (3.9 inches) | 81% | high |
| April Weather | 4°C (39°F) | 89 mm (3.5 inches) | 81% | high |
| May Weather | 11°C (52°F) | 106 mm (4.2 inches) | 86% | very high |
| June Weather | 14°C (58°F) | 111 mm (4.4 inches) | 87% | very high |
| July Weather | 19°C (67°F) | 107 mm (4.2 inches) | 93% | very high |
| August Weather | 19°C (66°F) | 176 mm (6.9 inches) | 95% | very high |
| September Weather | 15°C (59°F) | 119 mm (4.7 inches) | 88% | very high |
| October Weather | 8°C (47°F) | 152 mm (6.0 inches) | 83% | high |
| November Weather | 1°C (34°F) | 137 mm (5.4 inches) | 79% | moderate |
| December Weather | -7°C (21°F) | 106 mm (4.2 inches) | 80% | low |