Last updated: August 22, 2025
In December, the average temperature in Santa Maria da Boa Vista, Brazil reaches a warm 29°C (84°F). Visitors can expect a minimum of 21°C (71°F) and occasional peaks at 39°C (102°F). With 36 mm (1.4 in) of precipitation spread over 5 days, the average humidity sits comfortably at 58%, making for a typically humid summer experience.
In December in Santa Maria da Boa Vista, the average temperature is 29°C (84°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 21°C (71°F). It's advisable to pack light, breathable clothing and stay hydrated during your travels to enjoy the warm climate comfortably.
In Santa Maria da Boa Vista in December, the precipitation amount is 36 mm (1.4 in) over the course of 5 days.
In Santa Maria da Boa Vista in December, humidity is 58%. With an average temperature of 29°C (84°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated and take regular breaks to avoid fatigue while exploring the sights.
In Santa Maria da Boa Vista in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Maria da Boa Vista, you can check here.
UV Risk Categories
Weather in Santa Maria da Boa Vista varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Maria da Boa Vista, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 29°C (84°F) | 22 mm (0.9 inches) | 84% | extreme |
| February Weather | 28°C (83°F) | 73 mm (2.9 inches) | 89% | extreme |
| March Weather | 28°C (83°F) | 86 mm (3.4 inches) | 91% | extreme |
| April Weather | 28°C (82°F) | 58 mm (2.3 inches) | 92% | extreme |
| May Weather | 27°C (80°F) | 20 mm (0.8 inches) | 90% | extreme |
| June Weather | 26°C (78°F) | 13 mm (0.5 inches) | 87% | extreme |
| July Weather | 25°C (77°F) | 11 mm (0.4 inches) | 79% | extreme |
| August Weather | 26°C (79°F) | 5 mm (0.2 inches) | 74% | extreme |
| September Weather | 27°C (81°F) | 5 mm (0.2 inches) | 68% | extreme |
| October Weather | 29°C (84°F) | 5 mm (0.2 inches) | 62% | extreme |
| November Weather | 29°C (85°F) | 31 mm (1.2 inches) | 55% | extreme |
| December Weather | 29°C (84°F) | 36 mm (1.4 inches) | 58% | extreme |