Last updated: March 2, 2024
The weather in Belfast, United Kingdom, during January is characterized by an average temperature of 6°C (43°F). Highs can soar to 12°C (54°F), while lows may dip to -1°C (30°F). Typically, the humidity level in Belfast throughout January hovers around 87%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Belfast averages 60 mm (2.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 7 hours 56 minutes of daylight, with the sun shining for approximately 2 hours 36 minutes each day. Additionally, there is a 27% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In January, the UV Index in Belfast 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 | 1 | 0 | 0 | 0 |
| Exposure | Low | ||||||||||||
| Time to burn | 45 min | ||||||||||||