Climate averages 1991–2020
Concordia weather
in September.
A mild, wet month: the 8th warmest and the joint 3rd 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 Concordia: daytime highs average 20.8°C and nights cool to about 11.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 91 mm of rain on roughly 8 days, which makes September a wet month (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average September day.
The nearest other city in this atlas is Paysandú (103 km away). In September its highs average 20.0°C, 0.8°C cooler than Concordia, with 96 mm of rain.
Among the 67 cities listed in Argentina, Concordia ranks joint 21st of 67 for the warmest September highs and 60th of 67 for the driest September (rainfall, lowest first). The mean September high of those 67 cities is 19.4°C; Concordia is 1.4°C warmer than that mean.
From September to October, average highs rise by 2.9°C to 23.6°C, and monthly rainfall rises from 91 mm to 139 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
Concordia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.6°C20.8°C | 20.8°C | 112 | 8.4 | 13.914 h |
| February | 29.2°C20.1°C | 20.1°C | 105 | 8.7 | 13.213 h |
| March | 27.3°C18.4°C | 18.4°C | 116 | 7.8 | 12.312 h |
| April | 23.6°C15.2°C | 15.2°C | 148 | 8.3 | 11.311 h |
| May | 19.7°C12.1°C | 12.1°C | 104 | 7.3 | 10.511 h |
| June | 17.1°C9.5°C | 9.5°C | 89 | 7.4 | 10.110 h |
| July | 16.5°C8.4°C | 8.4°C | 76 | 6.4 | 10.310 h |
| August | 19.1°C9.6°C | 9.6°C | 91 | 7.1 | 11.011 h |
| September, selected | 20.8°C11.3°C | 11.3°C | 91 | 7.6 | 11.912 h |
| October | 23.6°C14.2°C | 14.2°C | 139 | 9.4 | 12.813 h |
| November | 26.7°C16.5°C | 16.5°C | 112 | 7.2 | 13.714 h |
| December | 29.3°C19.1°C | 19.1°C | 115 | 8.1 | 14.114 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
- Paysandú in SeptemberUruguay · 103 kmHigh 20.0°C · Low 10.1°C · 96 mm rain
- Gualeguaychú in SeptemberArgentina · 186 kmHigh 19.7°C · Low 10.1°C · 87 mm rain
- Uruguaiana in SeptemberBrazil · 203 kmHigh 22.0°C · Low 12.6°C · 126 mm rain
- Rivera in SeptemberUruguay · 241 kmHigh 20.0°C · Low 10.7°C · 131 mm rain
- Paraná in SeptemberArgentina · 241 kmHigh 20.8°C · Low 11.1°C · 63 mm rain
- Sant'Ana do Livramento in SeptemberBrazil · 243 kmHigh 19.8°C · Low 10.3°C · 131 mm rain
- Santa Fe in SeptemberArgentina · 257 kmHigh 21.4°C · Low 11.4°C · 65 mm rain
- Goya in SeptemberArgentina · 278 kmHigh 22.9°C · Low 13.5°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 Concordia) is explained once on the Concordia year overview and on the Sources, method and limits page.