Last updated: March 2, 2024
The weather in St Helens, United Kingdom, during December is characterized by an average temperature of 6°C (44°F). Highs can soar to 13°C (56°F), while lows may dip to -1°C (30°F). Typically, the humidity level in St Helens throughout December hovers around 89%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, St Helens averages 115 mm (4.5 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 7 hours 33 minutes of daylight, with the sun shining for approximately 3 hours 14 minutes each day. Additionally, there is a 15% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in St Helens reaches a maximum of 1, indicating a level of Low exposure. The most intense UV radiation typically occurs between 09:00 and 11:00, during which unprotected skin may burn in as little as 45 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 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Exposure | Low | ||||||||||||
| Time to burn | 45 min | ||||||||||||