Last updated: August 23, 2025
In December, the average temperature in Nayoro, Japan hovers around -5°C (23°F). Expect chilly days, with minimum temperatures dipping to -20°C (-4°F) and occasionally peaking at 12°C (53°F). Rain and snow contribute a total precipitation of 103 mm (4.1 in) spread over 26 days, while the air remains quite damp with an average humidity of 83%. Prepare for a brisk and wet month!
In December, in Nayoro, the average temperature is -5°C (23°F). Maximums can reach 12°C (53°F), while minimums can drop to as low as -20°C (-4°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm clothing for the coldest days and layers to handle milder conditions.
In Nayoro in December, the total precipitation amount is 103 mm (4.1 in) spread over 26 days.
In Nayoro in December humidity is 83%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable, as the cold air mixes with the heavy moisture, creating a damp and frigid atmosphere.
In Nayoro 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 Nayoro, you can visit Hourly UV Index in Nayoro.
UV Risk Categories
Weather in Nayoro varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nayoro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 64 mm (2.5 inches) | 87% | low |
| February Weather | -7°C (19°F) | 80 mm (3.1 inches) | 84% | moderate |
| March Weather | -1°C (30°F) | 87 mm (3.4 inches) | 83% | high |
| April Weather | 4°C (40°F) | 72 mm (2.8 inches) | 84% | high |
| May Weather | 11°C (52°F) | 100 mm (4.0 inches) | 88% | very high |
| June Weather | 14°C (58°F) | 105 mm (4.1 inches) | 88% | very high |
| July Weather | 19°C (67°F) | 117 mm (4.6 inches) | 93% | very high |
| August Weather | 19°C (66°F) | 180 mm (7.1 inches) | 94% | very high |
| September Weather | 15°C (60°F) | 98 mm (3.9 inches) | 86% | high |
| October Weather | 9°C (48°F) | 145 mm (5.7 inches) | 79% | moderate |
| November Weather | 2°C (36°F) | 146 mm (5.8 inches) | 77% | moderate |
| December Weather | -5°C (23°F) | 103 mm (4.1 inches) | 83% | low |