Last updated: March 2, 2024
The weather in Sao Mateus, Brazil, during December is characterized by an average temperature of 26°C (78°F). Highs can soar to 29°C (84°F), while lows may dip to 22°C (72°F). Typically, the humidity level in Sao Mateus throughout December hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Sao Mateus averages 246 mm (9.7 inches) of rainfall, typically over the course of 19 rainy days. The month enjoys an average of 13 hours 13 minutes of daylight, with the sun shining for approximately 10 hours 22 minutes each day. Additionally, there is a 22% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In December, the UV Index in Sao Mateus reaches a maximum of 15, 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 | 3 | 6 | 10 | 13 | 15 | 15 | 13 | 9 | 6 | 3 | 1 | 1 | 0 |
| Exposure | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||