The weather in Rio Negro in December is hot. The average temperatures are between 16°C and 31°C. Usually the days in December are hot while the nights are a bit cooler.
You can expect about 3 to 8 days of rain in Rio Negro during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Rio Negro in December 2024.
If you’re planning to visit Rio Negro in the near future, we highly recommend that you review the 14 day weather forecast for Rio Negro before you arrive.
Temperatures
31° / 16°
Rainy Days
4
Snowy Days
0
Dry Days
27
Rainfall
95
mm
Sun Hours
11.6
Hrs
