Last updated: March 2, 2024
The weather in Omachi, Japan, during December is characterized by an average temperature of -5°C (24°F). Highs can soar to 6°C (44°F), while lows may dip to -15°C (5°F). Typically, the humidity level in Omachi throughout December hovers around 86%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Omachi averages 206 mm (8.1 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 9 hours 42 minutes of daylight, with the sun shining for approximately 5 hours 53 minutes each day. Additionally, there is a 22% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Omachi reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 3 | 4 | 4 | 3 | 2 | 1 | 1 | 0 | 0 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||