Climate averages 1991–2020
San Martín weather
in March.
A warm, moderately wet month: the 5th warmest and the 11th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in San Martín: daytime highs average 26.7°C and nights cool to about 16.3°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 43 mm of rain on roughly 6 days, which makes March a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average March day.
The nearest other city in this atlas is Mendoza (41 km away). In March its highs average 23.9°C, 2.8°C cooler than San Martín, with 59 mm of rain.
Among the 67 cities listed in Argentina, San Martín ranks joint 16th of 67 for the warmest March highs and 10th of 67 for the driest March (rainfall, lowest first). The mean March high of those 67 cities is 25.6°C; San Martín is 1.0°C warmer than that mean.
From March to April, average highs fall by 4.7°C to 22.0°C, and monthly rainfall falls from 43 mm to 20 mm.
The annual picture
March 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, selected | 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 | 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
March in nearby cities
- Mendoza in MarchArgentina · 41 kmHigh 23.9°C · Low 14.4°C · 59 mm rain
- Rawson in MarchArgentina · 167 kmHigh 26.9°C · Low 15.2°C · 24 mm rain
- San Rafael in MarchArgentina · 171 kmHigh 25.7°C · Low 14.6°C · 48 mm rain
- San Juan, Argentina in MarchArgentina · 172 kmHigh 27.2°C · Low 15.8°C · 24 mm rain
- Peñalolén in MarchChile · 196 kmHigh 24.9°C · Low 14.4°C · 15 mm rain
- San Luis in MarchArgentina · 201 kmHigh 26.0°C · Low 16.4°C · 80 mm rain
- Puente Alto in MarchChile · 204 kmHigh 25.7°C · Low 13.6°C · 15 mm rain
- Colina in MarchChile · 205 kmHigh 27.7°C · Low 16.9°C · 14 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.