Rio Negro (San Carlos de Bariloche)
September
Weather in Rio Negro for September 2026
Your guide to Rio Negro weather in September - trends and predictions
With an average of 2 snowy days, Rio Negro usually enjoys a light touch of snow in September.
In general, the average temperature in Rio Negro at the beginning of September is 7.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 8 °C by the end of September.
Rio Negro experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 75.1 mm.
Snow Forecast ❄️
Temperatures
Rain 🌧️
22
Dry days
6
Rainy days
2
Snow days
8°/0°
Temperatures
21 km/h
Avg max wind
73 %
Avg humidity
Rio Negro Weather September
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Temperatures trend during September in Rio Negro
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September weather in Rio Negro day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 6° /1° | 0.5 mm | 0 cm | |
| 2 Sept. |  Patchy light snow | 4° /-1° | 0.4 mm | 0.1 cm | |
| 3 Sept. |  Sunny | 5° /0° | 0 mm | 0 cm | |
| 4 Sept. | Sunny | 9° /0° | 0 mm | 0 cm | |
| 5 Sept. | Sunny | 7° /-1° | 0 mm | 0 cm | |
| 6 Sept. | Sunny | 9° /-2° | 0 mm | 0 cm | |
| 7 Sept. | Sunny | 11° /0° | 0 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 8° /1° | 0.2 mm | 0 cm | |
| 9 Sept. |  Heavy snow | 3° /0° | 44.8 mm | 19.8 cm | |
| 10 Sept. |  Light sleet | 3° /0° | 4.4 mm | 0 cm | |
| 11 Sept. | Patchy rain possible | 4° /-4° | 0 mm | 0 cm | |
| 12 Sept. |  Cloudy | 10° /0° | 0.1 mm | 0 cm | |
| 13 Sept. |  Light freezing rain | 6° /0° | 1.3 mm | 0 cm | |
| 14 Sept. | Cloudy | 9° /-2° | 0 mm | 0 cm | |
| 15 Sept. |  Partly cloudy | 9° /1° | 0 mm | 0 cm | |
| 16 Sept. | Patchy rain possible | 9° /2° | 0 mm | 0 cm | |
| 17 Sept. | Patchy rain possible | 14° /1° | 0.2 mm | 0 cm | |
| 18 Sept. |  Light rain | 10° /4° | 3.7 mm | 0 cm | |
| 19 Sept. | Patchy light drizzle | 7° /0° | 5.2 mm | 0 cm | |
| 20 Sept. | Light rain | 7° /4° | 6.9 mm | 0 cm | |
| 21 Sept. | Patchy rain possible | 7° /0° | 0 mm | 0 cm | |
| 22 Sept. | Patchy rain possible | 4° /1° | 0 mm | 0 cm | |
| 23 Sept. |  Overcast | 8° /-1° | 0 mm | 0 cm | |
| 24 Sept. | Patchy rain possible | 9° /0° | 0 mm | 0 cm | |
| 25 Sept. | Cloudy | 14° /3° | 0 mm | 0 cm | |
| 26 Sept. | Patchy rain possible | 8° /2° | 0.1 mm | 0 cm | |
| 27 Sept. | Patchy rain possible | 8° /3° | 0.1 mm | 0 cm | |
| 28 Sept. |  Moderate rain | 6° /1° | 6.8 mm | 0 cm | |
| 29 Sept. | Patchy rain possible | 4° /-2° | 0.4 mm | 0 cm | |
| 30 Sept. | Light freezing rain | 7° /-1° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Rio Negro in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rio Negro forecast closer to your planned date for the most up-to-date weather information.
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Rio Negro in September - FAQ
What are the expected maximum and minimum temperatures in Rio Negro during September?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 0°.
How much rainfall should be expected in Rio Negro during September?
Moderate rainfall is anticipated in Rio Negro during September, with a total of 75.1 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
Will it snow in Rio Negro in September 2026?
Rio Negro experiences an average snowfall of 19.94 cm during September, occurring over 2 days.
What are the typical wind conditions in Rio Negro during September?
The average wind speed in Rio Negro during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Rio Negro snow forecast September 2026
Track daily snowfall levels and discover Rio Negro’s snowy potential this September ❄️
On average, Rio Negro sees 2 snowy days during September, with approximately 19.9 cm of total snowfall.
September rainfall patterns in Rio Negro
Explore the daily rainfall trends and prepare for Rio Negros September weather 💧
Typically, Rio Negro has 6 rainy days in September with a total of 75.1 mm of rainfall.
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