Last updated: August 22, 2025
In December, the average temperature in Barra Mansa, Brazil hovers around 23°C (74°F), providing a pleasant climate for outdoor activities. Temperatures can range from a cool 13°C (56°F) at night to a balmy 33°C (92°F) during the day. However, be prepared for rain, as 261 mm (10.3 in) of precipitation typically falls over 22 days in the month, accompanied by an average humidity of 75%.
In December, in Barra Mansa, the average temperature is 23°C (74°F). Maximum temperatures can reach up to 33°C (92°F), while the minimum can drop as low as 13°C (56°F). This pleasant climate makes Barra Mansa an ideal destination for outdoor activities and sightseeing during this time of year.
In Barra Mansa in December, the total precipitation amount is 261 mm (10.3 in) spread over 22 days.
In Barra Mansa 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 Barra Mansa 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 Barra Mansa.
UV Risk Categories
Weather in Barra Mansa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Barra Mansa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (76°F) | 193 mm (7.6 inches) | 85% | extreme |
| February Weather | 24°C (75°F) | 208 mm (8.2 inches) | 85% | extreme |
| March Weather | 24°C (75°F) | 177 mm (7.0 inches) | 86% | extreme |
| April Weather | 22°C (71°F) | 76 mm (3.0 inches) | 83% | extreme |
| May Weather | 19°C (67°F) | 54 mm (2.1 inches) | 81% | very high |
| June Weather | 19°C (66°F) | 24 mm (0.9 inches) | 80% | high |
| July Weather | 18°C (64°F) | 22 mm (0.9 inches) | 76% | very high |
| August Weather | 18°C (65°F) | 49 mm (1.9 inches) | 73% | very high |
| September Weather | 21°C (71°F) | 53 mm (2.1 inches) | 68% | extreme |
| October Weather | 22°C (72°F) | 111 mm (4.4 inches) | 61% | extreme |
| November Weather | 22°C (71°F) | 190 mm (7.5 inches) | 72% | extreme |
| December Weather | 23°C (74°F) | 261 mm (10.3 inches) | 75% | extreme |