Last updated: March 2, 2024
The weather in Hachijo, Japan, during December is characterized by an average temperature of 16°C (61°F). Highs can soar to 22°C (71°F), while lows may dip to 10°C (51°F). Typically, the humidity level in Hachijo throughout December hovers around 72%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Hachijo averages 133 mm (5.2 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 9 hours 59 minutes of daylight, with the sun shining for approximately 6 hours 44 minutes each day. Additionally, there is a 37% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Hachijo 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 | ||||||||||