Climate averages 1991–2020
Mendoza weather
in May.
A mild, fairly dry month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Mendoza: daytime highs average 15.5°C and nights cool to about 6.4°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 30 mm of rain on roughly 6 days, which makes May a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 27 min on an average May day.
The nearest other city in this atlas is San Martín (41 km away). In May its highs average 17.8°C, 2.4°C warmer than Mendoza, with 12 mm of rain.
Among the 67 cities listed in Argentina, Mendoza ranks joint 63rd of 67 for the warmest May highs and joint 13th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; Mendoza is 2.5°C cooler than that mean.
From May to June, average highs fall by 2.5°C to 13.0°C, and monthly rainfall falls from 30 mm to 21 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- San Martín in MayArgentina · 41 kmHigh 17.8°C · Low 8.1°C · 12 mm rain
- Rawson in MayArgentina · 148 kmHigh 19.3°C · Low 7.1°C · 10 mm rain
- San Juan, Argentina in MayArgentina · 153 kmHigh 19.6°C · Low 7.6°C · 10 mm rain
- Peñalolén in MayChile · 170 kmHigh 17.2°C · Low 6.0°C · 79 mm rain
- Colina in MayChile · 174 kmHigh 19.7°C · Low 8.8°C · 81 mm rain
- Santiago in MayChile · 179 kmHigh 18.4°C · Low 6.1°C · 62 mm rain
- Puente Alto in MayChile · 180 kmHigh 17.9°C · Low 5.0°C · 79 mm rain
- Quilicura in MayChile · 182 kmHigh 18.7°C · Low 7.2°C · 81 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.