Last updated: March 2, 2024
The weather in Bristol, United States, during December is characterized by an average temperature of 1°C (34°F). Highs can soar to 15°C (59°F), while lows may dip to -11°C (12°F). Typically, the humidity level in Bristol throughout December hovers around 86%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Bristol averages 61 mm (2.4 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 9 hours 10 minutes of daylight, with the sun shining for approximately 4 hours 55 minutes each day. Additionally, there is a 28% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Bristol reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 0 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||