Last updated: March 2, 2024
The weather in Castelo Branco, Portugal, during December is characterized by an average temperature of 17°C (63°F). Highs can soar to 19°C (67°F), while lows may dip to 13°C (56°F). Typically, the humidity level in Castelo Branco throughout December hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Castelo Branco averages 108 mm (4.3 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 9 hours 30 minutes of daylight, with the sun shining for approximately 6 hours 26 minutes each day. Additionally, there is a 25% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Castelo Branco reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 3 | 3 | 2 | 2 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||