Climate averages 1991–2020
Junín weather
in September.
A mild, moderately wet month: the 8th warmest and the 5th 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 Junín: daytime highs average 19.2°C and nights cool to about 8.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 67 mm of rain on roughly 6 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 51 min on an average September day.
The nearest other city in this atlas is Pergamino (85 km away). In September its highs average 19.7°C, about as warm as Junín, with 68 mm of rain.
Among the 67 cities listed in Argentina, Junín ranks 31st of 67 for the warmest September highs and joint 33rd of 67 for the driest September (rainfall, lowest first). The mean September high of those 67 cities is 19.4°C; Junín is 0.2°C cooler than that mean.
From September to October, average highs rise by 2.6°C to 21.9°C, and monthly rainfall rises from 67 mm to 119 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
Junín climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C18.6°C | 18.6°C | 114 | 8.7 | 14.214 h |
| February | 27.2°C17.7°C | 17.7°C | 103 | 8.2 | 13.413 h |
| March | 25.6°C16.1°C | 16.1°C | 100 | 8.4 | 12.312 h |
| April | 21.9°C12.8°C | 12.8°C | 90 | 8.3 | 11.211 h |
| May | 18.1°C9.8°C | 9.8°C | 62 | 6.3 | 10.310 h |
| June | 15.1°C6.7°C | 6.7°C | 38 | 4.7 | 9.910 h |
| July | 14.3°C5.6°C | 5.6°C | 32 | 4.3 | 10.110 h |
| August | 17.2°C7.0°C | 7.0°C | 45 | 4.2 | 10.811 h |
| September, selected | 19.2°C8.9°C | 8.9°C | 67 | 6.3 | 11.812 h |
| October | 21.9°C11.8°C | 11.8°C | 119 | 10.0 | 12.913 h |
| November | 25.4°C14.6°C | 14.6°C | 103 | 8.7 | 13.914 h |
| December | 28.0°C17.2°C | 17.2°C | 103 | 9.1 | 14.414 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
- Pergamino in SeptemberArgentina · 85 kmHigh 19.7°C · Low 9.3°C · 68 mm rain
- Venado Tuerto in SeptemberArgentina · 133 kmHigh 20.2°C · Low 9.5°C · 58 mm rain
- San Nicolás de los Arroyos in SeptemberArgentina · 156 kmHigh 20.0°C · Low 10.4°C · 67 mm rain
- Luján in SeptemberArgentina · 168 kmHigh 18.8°C · Low 8.8°C · 71 mm rain
- Gobernador Gálvez in SeptemberArgentina · 176 kmHigh 20.4°C · Low 10.2°C · 61 mm rain
- Zárate in SeptemberArgentina · 185 kmHigh 19.0°C · Low 9.2°C · 75 mm rain
- Rosario in SeptemberArgentina · 185 kmHigh 20.4°C · Low 10.1°C · 61 mm rain
- Pilar in SeptemberArgentina · 187 kmHigh 18.6°C · Low 8.9°C · 71 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 Junín) is explained once on the Junín year overview and on the Sources, method and limits page.