Last updated: March 2, 2024
The weather in Porto, Brazil, during December is characterized by an average temperature of 29°C (85°F). Highs can soar to 37°C (99°F), while lows may dip to 23°C (74°F). Typically, the humidity level in Porto throughout December hovers around 76%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Porto averages 69 mm (2.7 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 10 hours 11 minutes each day. Additionally, there is a 20% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Porto reaches a maximum of 13, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 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 | 2 | 4 | 7 | 11 | 13 | 13 | 11 | 8 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 10 min | 15 min | 30 min | 45 min | ||||||