Climate averages 1991–2020
General Roca weather
in September.
A mild, fairly dry month: the 8th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in General Roca: daytime highs average 18.7°C and nights cool to about 7.0°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 21 mm of rain on roughly 4 days, which makes September a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 48 min on an average September day.
The nearest other city in this atlas is Cipolletti (37 km away). In September its highs average 18.5°C, about as warm as General Roca, with 19 mm of rain.
Among the 67 cities listed in Argentina, General Roca ranks 36th of 67 for the warmest September highs and joint 8th of 67 for the driest September (rainfall, lowest first). The mean September high of those 67 cities is 19.4°C; General Roca is 0.7°C cooler than that mean.
From September to October, average highs rise by 3.7°C to 22.4°C, and monthly rainfall rises from 21 mm to 36 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
General Roca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.8°C18.6°C | 18.6°C | 18 | 3.1 | 14.615 h |
| February | 30.0°C17.4°C | 17.4°C | 22 | 3.0 | 13.614 h |
| March | 26.6°C15.0°C | 15.0°C | 25 | 3.5 | 12.412 h |
| April | 21.2°C10.7°C | 10.7°C | 29 | 3.5 | 11.111 h |
| May | 16.3°C7.1°C | 7.1°C | 27 | 4.9 | 10.010 h |
| June | 12.9°C4.3°C | 4.3°C | 20 | 4.4 | 9.59 h |
| July | 12.3°C3.1°C | 3.1°C | 18 | 3.6 | 9.710 h |
| August | 15.3°C4.6°C | 4.6°C | 14 | 2.9 | 10.611 h |
| September, selected | 18.7°C7.0°C | 7.0°C | 21 | 3.5 | 11.812 h |
| October | 22.4°C10.3°C | 10.3°C | 36 | 4.3 | 13.113 h |
| November | 26.8°C13.9°C | 13.9°C | 22 | 3.2 | 14.214 h |
| December | 30.2°C17.0°C | 17.0°C | 16 | 2.6 | 14.815 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Cipolletti in SeptemberArgentina · 37 kmHigh 18.5°C · Low 6.7°C · 19 mm rain
- Neuquén in SeptemberArgentina · 42 kmHigh 18.3°C · Low 6.5°C · 19 mm rain
- San Carlos de Bariloche in SeptemberArgentina · 394 kmHigh 7.2°C · Low 0.8°C · 68 mm rain
- Santa Rosa, Argentina in SeptemberArgentina · 395 kmHigh 18.9°C · Low 8.0°C · 48 mm rain
- Villa Mercedes, Chile in SeptemberChile · 425 kmHigh 14.5°C · Low 4.5°C · 145 mm rain
- Padre Las Casas in SeptemberChile · 435 kmHigh 14.0°C · Low 4.4°C · 113 mm rain
- Temuco in SeptemberChile · 435 kmHigh 14.3°C · Low 4.7°C · 113 mm rain
- Los Ángeles in SeptemberChile · 451 kmHigh 15.3°C · Low 5.2°C · 94 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for General Roca) is explained once on the General Roca year overview and on the Sources, method and limits page.