Climate averages 1991–2020
Mendoza weather
in January.
A hot, moderately wet month: the warmest and the joint 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Mendoza: daytime highs average 28.4°C and nights cool to about 17.8°C. By daytime temperature it is the warmest month of the year.
Expect about 48 mm of rain on roughly 8 days, which makes January a moderately wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 03 min on an average January day.
The nearest other city in this atlas is San Martín (41 km away). In January its highs average 31.3°C, 3.0°C warmer than Mendoza, with 48 mm of rain.
Among the 67 cities listed in Argentina, Mendoza ranks joint 51st of 67 for the warmest January highs and joint 11th of 67 for the driest January (rainfall, lowest first). The mean January high of those 67 cities is 29.0°C; Mendoza is 0.6°C cooler than that mean.
From January to February, average highs fall by 1.5°C to 26.9°C, and monthly rainfall stays at 48 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- San Martín in JanuaryArgentina · 41 kmHigh 31.3°C · Low 20.0°C · 48 mm rain
- Rawson in JanuaryArgentina · 148 kmHigh 30.5°C · Low 18.5°C · 17 mm rain
- San Juan, Argentina in JanuaryArgentina · 153 kmHigh 31.0°C · Low 19.2°C · 17 mm rain
- Peñalolén in JanuaryChile · 170 kmHigh 26.8°C · Low 15.9°C · 15 mm rain
- Colina in JanuaryChile · 174 kmHigh 29.7°C · Low 18.3°C · 7.7 mm rain
- Santiago in JanuaryChile · 179 kmHigh 28.0°C · Low 16.6°C · 2.7 mm rain
- Puente Alto in JanuaryChile · 180 kmHigh 27.7°C · Low 15.8°C · 15 mm rain
- Quilicura in JanuaryChile · 182 kmHigh 28.5°C · Low 16.8°C · 7.7 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.