Last updated: August 22, 2025
In December, the average temperature in Castilho, Brazil hovers around 27°C (81°F), making it a warm destination to explore. However, be prepared for temperature fluctuations, as it can dip to a cool 19°C (66°F) and soar as high as 37°C (98°F). With an average precipitation of 155 mm (6.1 in) spread over 17 days, don’t forget to pack an umbrella! The air is typically quite humid, with average humidity levels reaching 82%, so staying hydrated is essential.
In December in Castilho, the average temperature is 27°C (81°F). Maximums can reach 37°C (98°F) and minimums can be as low as 19°C (66°F). This makes it a great time to travel if you enjoy warm weather, but be prepared for some heat during the day and cooler evenings.
In Castilho in December, the precipitation amount is 155 mm (6.1 in) over the course of 17 days.
In Castilho in December humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.
In Castilho in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Castilho.
UV Risk Categories
Weather in Castilho varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castilho, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 27°C (81°F) | 153 mm (6.0 inches) | 84% | extreme |
| February Weather | 27°C (81°F) | 132 mm (5.2 inches) | 85% | extreme |
| March Weather | 27°C (81°F) | 109 mm (4.3 inches) | 84% | extreme |
| April Weather | 25°C (78°F) | 46 mm (1.8 inches) | 76% | extreme |
| May Weather | 23°C (73°F) | 42 mm (1.7 inches) | 60% | very high |
| June Weather | 22°C (73°F) | 15 mm (0.6 inches) | 48% | high |
| July Weather | 21°C (71°F) | 4 mm (0.2 inches) | 44% | very high |
| August Weather | 23°C (74°F) | 17 mm (0.7 inches) | 38% | very high |
| September Weather | 27°C (81°F) | 21 mm (0.8 inches) | 33% | extreme |
| October Weather | 27°C (81°F) | 94 mm (3.7 inches) | 31% | extreme |
| November Weather | 27°C (81°F) | 115 mm (4.5 inches) | 62% | extreme |
| December Weather | 27°C (81°F) | 155 mm (6.1 inches) | 82% | extreme |