Climate averages 1991–2020
San Luis weather
in March.
A warm, moderately wet month: the 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in San Luis: daytime highs average 26.0°C and nights cool to about 16.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 80 mm of rain on roughly 10 days, which makes March a moderately wet month (the 8th 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 Villa Mercedes, Argentina (91 km away). In March its highs average 26.0°C, about as warm as San Luis, with 87 mm of rain.
Among the 67 cities listed in Argentina, San Luis ranks joint 26th of 67 for the warmest March highs and 18th of 67 for the driest March (rainfall, lowest first). The mean March high of those 67 cities is 25.6°C; San Luis is 0.3°C warmer than that mean.
From March to April, average highs fall by 4.1°C to 21.8°C, and monthly rainfall falls from 80 mm to 53 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 Luis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C19.2°C | 19.2°C | 107 | 13.2 | 14.114 h |
| February | 28.2°C18.1°C | 18.1°C | 82 | 10.9 | 13.313 h |
| March, selected | 26.0°C16.4°C | 16.4°C | 80 | 10.0 | 12.312 h |
| April | 21.8°C12.5°C | 12.5°C | 53 | 7.0 | 11.311 h |
| May | 18.6°C9.1°C | 9.1°C | 25 | 4.2 | 10.410 h |
| June | 16.4°C6.2°C | 6.2°C | 8.3 | 1.9 | 10.010 h |
| July | 15.9°C5.0°C | 5.0°C | 9.1 | 2.1 | 10.210 h |
| August | 18.9°C7.0°C | 7.0°C | 15 | 2.6 | 10.911 h |
| September | 21.3°C9.4°C | 9.4°C | 30 | 4.6 | 11.912 h |
| October | 23.9°C12.5°C | 12.5°C | 66 | 8.7 | 12.913 h |
| November | 26.6°C15.5°C | 15.5°C | 89 | 11.7 | 13.814 h |
| December | 28.9°C18.0°C | 18.0°C | 101 | 13.1 | 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
- Villa Mercedes, Argentina in MarchArgentina · 91 kmHigh 26.0°C · Low 16.0°C · 87 mm rain
- Río Cuarto in MarchArgentina · 184 kmHigh 25.4°C · Low 16.3°C · 88 mm rain
- San Martín in MarchArgentina · 201 kmHigh 26.7°C · Low 16.3°C · 43 mm rain
- San Rafael in MarchArgentina · 237 kmHigh 25.7°C · Low 14.6°C · 48 mm rain
- Mendoza in MarchArgentina · 239 kmHigh 23.9°C · Low 14.4°C · 59 mm rain
- Rawson in MarchArgentina · 282 kmHigh 26.9°C · Low 15.2°C · 24 mm rain
- San Juan, Argentina in MarchArgentina · 284 kmHigh 27.2°C · Low 15.8°C · 24 mm rain
- Córdoba in MarchArgentina · 290 kmHigh 25.5°C · Low 16.2°C · 120 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 Luis) is explained once on the San Luis year overview and on the Sources, method and limits page.