Climate averages 1991–2020
Posadas weather
in August.
A warm, wet month: the 9th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Posadas: daytime highs average 22.5°C and nights cool to about 13.4°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 90 mm of rain on roughly 8 days, which makes August a wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 09 min on an average August day.
The nearest other city in this atlas is Encarnación (9 km away). In August its highs average 22.7°C, about as warm as Posadas, with 89 mm of rain.
Among the 67 cities listed in Argentina, Posadas ranks joint 5th of 67 for the warmest August highs and 65th of 67 for the driest August (rainfall, lowest first). The mean August high of those 67 cities is 17.2°C; Posadas is 5.2°C warmer than that mean.
From August to September, average highs rise by 1.8°C to 24.3°C, and monthly rainfall rises from 90 mm to 147 mm.
The annual picture
August 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
Posadas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.0°C22.7°C | 22.7°C | 133 | 12.6 | 13.714 h |
| February | 30.1°C22.2°C | 22.2°C | 130 | 11.9 | 13.013 h |
| March | 29.0°C20.9°C | 20.9°C | 121 | 10.5 | 12.312 h |
| April | 26.1°C18.1°C | 18.1°C | 159 | 9.9 | 11.511 h |
| May | 22.1°C14.8°C | 14.8°C | 143 | 9.1 | 10.811 h |
| June | 20.4°C13.3°C | 13.3°C | 121 | 8.9 | 10.410 h |
| July | 19.9°C12.0°C | 12.0°C | 117 | 9.1 | 10.611 h |
| August, selected | 22.5°C13.4°C | 13.4°C | 90 | 7.9 | 11.111 h |
| September | 24.3°C15.0°C | 15.0°C | 147 | 9.8 | 11.912 h |
| October | 26.6°C17.8°C | 17.8°C | 216 | 12.4 | 12.713 h |
| November | 28.2°C19.1°C | 19.1°C | 156 | 10.4 | 13.413 h |
| December | 30.3°C21.5°C | 21.5°C | 163 | 11.7 | 13.814 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
August in nearby cities
- Encarnación in AugustParaguay · 9 kmHigh 22.7°C · Low 13.3°C · 89 mm rain
- Ituzaingó in AugustArgentina · 78 kmHigh 22.2°C · Low 13.6°C · 85 mm rain
- Santa Rosa, Brazil in AugustBrazil · 152 kmHigh 21.7°C · Low 12.2°C · 94 mm rain
- Santo Ângelo in AugustBrazil · 192 kmHigh 21.2°C · Low 11.4°C · 104 mm rain
- Ijuí in AugustBrazil · 226 kmHigh 21.0°C · Low 11.3°C · 108 mm rain
- Foz do Iguaçu in AugustBrazil · 244 kmHigh 24.3°C · Low 14.8°C · 94 mm rain
- Ciudad del Este in AugustParaguay · 245 kmHigh 24.2°C · Low 14.8°C · 93 mm rain
- Formosa, Argentina in AugustArgentina · 260 kmHigh 23.7°C · Low 14.1°C · 64 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 Posadas) is explained once on the Posadas year overview and on the Sources, method and limits page.