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The temperatures in Rio Negro in October are comfortable with low of 10°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Rio Negro during the month of October. 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 October 2025.
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 33° / 17° | 3 | 28 | 0 | 93 mm | Good | Rio Negro in January |
| February | 31° / 16° | 3 | 25 | 0 | 69 mm | Good | Rio Negro in February |
| March | 28° / 14° | 4 | 28 | 0 | 82 mm | Perfect | Rio Negro in March |
| April | 23° / 12° | 3 | 27 | 0 | 83 mm | Perfect | Rio Negro in April |
| May | 18° / 9° | 3 | 28 | 0 | 62 mm | Good | Rio Negro in May |
| June | 14° / 7° | 2 | 28 | 0 | 27 mm | Good | Rio Negro in June |
| July | 14° / 5° | 2 | 29 | 0 | 34 mm | Good | Rio Negro in July |
| August | 17° / 7° | 2 | 29 | 0 | 44 mm | Good | Rio Negro in August |
| September | 19° / 8° | 4 | 26 | 0 | 81 mm | Good | Rio Negro in September |
| October | 22° / 10° | 5 | 26 | 0 | 120 mm | Good | Rio Negro in October |
| November | 27° / 13° | 5 | 25 | 0 | 113 mm | Perfect | Rio Negro in November |
| December | 31° / 16° | 4 | 27 | 0 | 95 mm | Good | Rio Negro in December |