Last updated: August 23, 2025
In December, the average temperature in Nishiokoppe, Japan hovers around -5°C (24°F). Expect chilly days, with minimums dipping to -18°C (0°F) and maximums reaching up to 12°C (53°F). With an average precipitation of 69 mm (2.7 in) spread over 22 days, and an average humidity of 82%, prepare for damp and frosty weather as you explore this winter wonderland!
In December in Nishiokoppe the average temperature is -5°C (24°F). Maximum can reach 12°C (53°F) and minimum can be as low as -18°C (0°F). Be sure to pack warm clothing and prepare for chilly weather if you plan to visit during this time.
In Nishiokoppe in December, the precipitation amount is 69 mm (2.7 in), occurring over the course of 22 days.
In Nishiokoppe in December humidity is 82%. With an average temperature of -5°C (24°F), this humidity feels like an icy shroud enveloping you, making every breath a sharp reminder of the cold as moisture clings to your skin, potentially turning your travel experience into a balance between breathtaking winter scenery and the biting chill that is exacerbated by the dampness in the air.
In Nishiokoppe 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 Nishiokoppe, you can visit Hourly UV Index in Nishiokoppe.
UV Risk Categories
Weather in Nishiokoppe varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nishiokoppe, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 61 mm (2.4 inches) | 87% | low |
| February Weather | -7°C (20°F) | 71 mm (2.8 inches) | 86% | moderate |
| March Weather | -1°C (30°F) | 81 mm (3.2 inches) | 85% | high |
| April Weather | 5°C (41°F) | 65 mm (2.6 inches) | 85% | high |
| May Weather | 11°C (53°F) | 93 mm (3.7 inches) | 88% | very high |
| June Weather | 14°C (58°F) | 95 mm (3.8 inches) | 88% | very high |
| July Weather | 19°C (67°F) | 98 mm (3.8 inches) | 93% | very high |
| August Weather | 19°C (66°F) | 149 mm (5.9 inches) | 95% | very high |
| September Weather | 16°C (60°F) | 76 mm (3.0 inches) | 88% | high |
| October Weather | 9°C (49°F) | 132 mm (5.2 inches) | 80% | moderate |
| November Weather | 3°C (37°F) | 98 mm (3.9 inches) | 78% | moderate |
| December Weather | -5°C (24°F) | 69 mm (2.7 inches) | 82% | low |