Climate averages 1991–2020
Mendoza weather
in August.
A mild, fairly dry month: the 10th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Mendoza: daytime highs average 15.1°C and nights cool to about 3.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 25 mm of rain on roughly 4 days, which makes August a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 55 min on an average August day.
The nearest other city in this atlas is San Martín (41 km away). In August its highs average 17.7°C, 2.6°C warmer than Mendoza, with 10 mm of rain.
Among the 67 cities listed in Argentina, Mendoza ranks joint 55th of 67 for the warmest August highs and 18th of 67 for the driest August (rainfall, lowest first). The mean August high of those 67 cities is 17.2°C; Mendoza is 2.1°C cooler than that mean.
From August to September, average highs rise by 3.2°C to 18.3°C, and monthly rainfall rises from 25 mm to 28 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
Mendoza climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C17.8°C | 17.8°C | 48 | 7.8 | 14.014 h |
| February | 26.9°C16.6°C | 16.6°C | 48 | 7.2 | 13.313 h |
| March | 23.9°C14.4°C | 14.4°C | 59 | 7.8 | 12.312 h |
| April | 19.4°C10.2°C | 10.2°C | 40 | 6.5 | 11.311 h |
| May | 15.5°C6.4°C | 6.4°C | 30 | 6.1 | 10.510 h |
| June | 13.0°C2.7°C | 2.7°C | 21 | 4.1 | 10.010 h |
| July | 12.3°C1.5°C | 1.5°C | 19 | 3.6 | 10.210 h |
| August, selected | 15.1°C3.2°C | 3.2°C | 25 | 4.1 | 10.911 h |
| September | 18.3°C6.1°C | 6.1°C | 28 | 5.0 | 11.912 h |
| October | 21.9°C9.9°C | 9.9°C | 43 | 6.4 | 12.913 h |
| November | 25.0°C13.3°C | 13.3°C | 44 | 7.4 | 13.814 h |
| December | 27.6°C16.3°C | 16.3°C | 48 | 6.8 | 14.314 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
- San Martín in AugustArgentina · 41 kmHigh 17.7°C · Low 5.3°C · 10 mm rain
- Rawson in AugustArgentina · 148 kmHigh 19.1°C · Low 4.3°C · 10 mm rain
- San Juan, Argentina in AugustArgentina · 153 kmHigh 19.4°C · Low 5.0°C · 10 mm rain
- Peñalolén in AugustChile · 170 kmHigh 14.2°C · Low 3.0°C · 90 mm rain
- Colina in AugustChile · 174 kmHigh 16.9°C · Low 5.9°C · 99 mm rain
- Santiago in AugustChile · 179 kmHigh 15.4°C · Low 3.0°C · 81 mm rain
- Puente Alto in AugustChile · 180 kmHigh 14.9°C · Low 1.7°C · 90 mm rain
- Quilicura in AugustChile · 182 kmHigh 16.1°C · Low 4.5°C · 99 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 Mendoza) is explained once on the Mendoza year overview and on the Sources, method and limits page.