Last updated: August 22, 2025
In Tres Rios, Brazil, the average temperature in December hovers around 23°C (74°F). Expect a range that can dip to a cool 13°C (55°F) or soar to a sizzling 35°C (95°F). Throughout the month, precipitation averages 202 mm (7.9 in), typically spread across 21 days, creating a humidity level of around 75%. Prepare for a blend of warmth and moisture!
In December in Tres Rios, the average temperature is 23°C (74°F). Maximum can reach 35°C (95°F) and minimum can be as low as 13°C (55°F). This pleasant climate makes Tres Rios an ideal destination for travelers looking to enjoy outdoor activities and explore the local attractions.
In Tres Rios in December, the precipitation amount is 202 mm (7.9 in) spread over a period of 21 days.
In Tres Rios in December, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.
In Tres Rios 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 Tres Rios.
UV Risk Categories
Weather in Tres Rios varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tres Rios, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (77°F) | 120 mm (4.7 inches) | 85% | extreme |
| February Weather | 24°C (75°F) | 211 mm (8.3 inches) | 85% | extreme |
| March Weather | 24°C (75°F) | 143 mm (5.6 inches) | 86% | extreme |
| April Weather | 22°C (72°F) | 48 mm (1.9 inches) | 83% | extreme |
| May Weather | 20°C (68°F) | 36 mm (1.4 inches) | 81% | very high |
| June Weather | 19°C (67°F) | 19 mm (0.7 inches) | 80% | high |
| July Weather | 18°C (64°F) | 11 mm (0.4 inches) | 76% | very high |
| August Weather | 18°C (66°F) | 37 mm (1.4 inches) | 73% | very high |
| September Weather | 22°C (71°F) | 45 mm (1.8 inches) | 68% | extreme |
| October Weather | 22°C (72°F) | 107 mm (4.2 inches) | 61% | extreme |
| November Weather | 22°C (72°F) | 203 mm (8.0 inches) | 72% | extreme |
| December Weather | 23°C (74°F) | 202 mm (7.9 inches) | 75% | extreme |