High-altitude vineyards in a rain shadow, under the highest peak in the Americas. Daytime highs in Mendoza run from about 11 °C in July to 26 °C in January, an annual range of roughly 15 °C.
Measured against a city trip, the conditions hold up September to April. January is the most consistent single month: highs near 26 °C, nights around 15 °C, and roughly 88 mm of rain across the month.
The binding constraint here is temperature — that is what rules months out, not any composite judgement. June is the weakest month on these criteria.
May sit just outside the window — part of the month works and part does not. These are usually the interesting weeks: conditions are close to the peak-season answer while prices and crowds are not. The map lets you check them fortnight by fortnight rather than trusting a monthly average.
What Mendoza is known for
- Mendoza produces the large majority of Argentina's wine, and effectively defined Malbec
- Aconcagua, at 6,961 m, is the highest mountain outside Asia; the approach starts on the Chile road
- Vineyards here sit between 800 and 1,500 m, which is unusually high and gives the wines their profile
- The region is desert irrigated by Andean snowmelt through channels the Huarpe dug before the Spanish arrived
- Puente del Inca's mineral-stained natural arch sits on the old route over the pass
Month by month
| Month | High °C | Low °C | Precip mm | Wet days |
|---|---|---|---|---|
| January | 26 | 15 | 88 | 15.3 |
| February | 25 | 15 | 86 | 13.6 |
| March | 22 | 12 | 86 | 12.7 |
| April | 19 | 8 | 62 | 8.6 |
| May | 14 | 4 | 47 | 7.6 |
| June | 11 | 1 | 38 | 6.3 |
| July | 11 | -0 | 38 | 5.1 |
| August | 13 | 1 | 40 | 6.9 |
| September | 16 | 4 | 50 | 7.1 |
| October | 20 | 7 | 65 | 9.2 |
| November | 23 | 10 | 70 | 10.9 |
| December | 26 | 14 | 80 | 12.6 |
Ticked rows are months where every hard requirement for a city trip is met across at least half the month.
By trip type
| City | September to April |
| Hiking | March to November |
Each row applies that trip type's own hard limits to the same climate data.
Open Mendoza & the Andes on the map →
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Nearby regions
Figures are 30-year climatology sampled at Mendoza, Lujan de Cuyo, Maipu, Uspallata and Tupungato, averaged across those locations, from ERA5-Land reanalysis fitted with a harmonic seasonal cycle and a trend term, evaluated for 2026. Sampling named towns rather than averaging the whole region avoids blending valley and mountain conditions into a figure true of neither. Cells are about 0.08° wide, from ERA5-Land's 0.1° grid, which is itself driven by a 0.25° (~28 km) atmospheric reanalysis — so individual valleys, sheltered bays and single summits are not resolved. In steep terrain read these as conditions for the wider area rather than for one village. They describe typical conditions, not a forecast. Read how the climatology is built.