Climate averages 1991–2020
San Martín weather
in July.
A cool, very dry month: the coolest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a cool month in San Martín: daytime highs average 14.5°C and nights cool to about 3.2°C. By daytime temperature it is the coolest month of the year.
Expect about 5.6 mm of rain on roughly 2 days, which makes July a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 11 min on an average July day.
The nearest other city in this atlas is Mendoza (41 km away). In July its highs average 12.3°C, 2.2°C cooler than San Martín, with 19 mm of rain.
Among the 67 cities listed in Argentina, San Martín ranks 31st of 67 for the warmest July highs and 1st of 67 for the driest July (rainfall, lowest first). The mean July high of those 67 cities is 14.6°C; San Martín is 0.1°C cooler than that mean.
From July to August, average highs rise by 3.3°C to 17.7°C, and monthly rainfall rises from 5.6 mm to 10 mm.
The annual picture
July 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
San Martín climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.3°C20.0°C | 20.0°C | 48 | 7.7 | 14.114 h |
| February | 29.7°C18.6°C | 18.6°C | 38 | 6.4 | 13.313 h |
| March | 26.7°C16.3°C | 16.3°C | 43 | 6.2 | 12.312 h |
| April | 22.0°C11.9°C | 11.9°C | 20 | 4.3 | 11.311 h |
| May | 17.8°C8.1°C | 8.1°C | 12 | 2.6 | 10.410 h |
| June | 14.9°C4.4°C | 4.4°C | 5.5 | 1.3 | 10.010 h |
| July, selected | 14.5°C3.2°C | 3.2°C | 5.6 | 1.6 | 10.210 h |
| August | 17.7°C5.3°C | 5.3°C | 10 | 1.9 | 10.911 h |
| September | 21.1°C8.5°C | 8.5°C | 11 | 2.3 | 11.912 h |
| October | 24.9°C12.5°C | 12.5°C | 20 | 3.9 | 12.913 h |
| November | 28.4°C16.0°C | 16.0°C | 27 | 5.1 | 13.814 h |
| December | 30.9°C18.8°C | 18.8°C | 39 | 6.7 | 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
July in nearby cities
- Mendoza in JulyArgentina · 41 kmHigh 12.3°C · Low 1.5°C · 19 mm rain
- Rawson in JulyArgentina · 167 kmHigh 16.2°C · Low 2.3°C · 8.2 mm rain
- San Rafael in JulyArgentina · 171 kmHigh 13.8°C · Low 1.5°C · 16 mm rain
- San Juan, Argentina in JulyArgentina · 172 kmHigh 16.4°C · Low 2.9°C · 8.2 mm rain
- Peñalolén in JulyChile · 196 kmHigh 12.8°C · Low 1.8°C · 97 mm rain
- San Luis in JulyArgentina · 201 kmHigh 15.9°C · Low 5.0°C · 9.1 mm rain
- Puente Alto in JulyChile · 204 kmHigh 13.3°C · Low 0.6°C · 97 mm rain
- Colina in JulyChile · 205 kmHigh 15.6°C · Low 4.8°C · 96 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 San Martín) is explained once on the San Martín year overview and on the Sources, method and limits page.