Last updated: August 22, 2025
In Julio de Castilhos, Brazil, the average temperature in December hovers around 23°C (74°F). Temperatures can dip to a cool 10°C (50°F), while the mercury can rise as high as 37°C (99°F). Expect 87 mm (3.4 in) of precipitation over approximately 11 days, with an average humidity of 85% creating a pleasantly warm atmosphere.
In December in Julio de Castilhos, the average temperature is 23°C (74°F). Maximums can reach up to 37°C (99°F), and minimums can drop as low as 10°C (50°F). Be prepared for warm days and cooler nights while exploring the beautiful surroundings.
In Julio de Castilhos in December, the precipitation amount is 87 mm (3.4 in) over the course of 11 days.
In Julio de Castilhos in December humidity is 85%. With an average temperature of 23°C (74°F), this humidity feels like a thick, steamy blanket wrapping around you, making outdoor activities draining and sweaty, and leaving you longing for a cool breeze or a refreshing drink to ease the discomfort while traveling.
In Julio de Castilhos in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Julio de Castilhos.
UV Risk Categories
Weather in Julio de Castilhos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Julio de Castilhos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (75°F) | 147 mm (5.8 inches) | 74% | extreme |
| February Weather | 23°C (73°F) | 95 mm (3.7 inches) | 73% | extreme |
| March Weather | 22°C (71°F) | 137 mm (5.4 inches) | 73% | extreme |
| April Weather | 19°C (67°F) | 102 mm (4.0 inches) | 81% | very high |
| May Weather | 15°C (60°F) | 199 mm (7.8 inches) | 87% | high |
| June Weather | 14°C (58°F) | 120 mm (4.7 inches) | 84% | moderate |
| July Weather | 13°C (56°F) | 114 mm (4.5 inches) | 80% | moderate |
| August Weather | 15°C (59°F) | 94 mm (3.7 inches) | 71% | high |
| September Weather | 17°C (63°F) | 147 mm (5.8 inches) | 74% | very high |
| October Weather | 19°C (66°F) | 195 mm (7.7 inches) | 77% | extreme |
| November Weather | 21°C (70°F) | 138 mm (5.4 inches) | 77% | extreme |
| December Weather | 23°C (74°F) | 87 mm (3.4 inches) | 85% | extreme |