Climate averages 1991–2020
San Juan, Argentina weather
in March.
A warm, fairly dry month: the 5th warmest and the wettest 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 Juan, Argentina: daytime highs average 27.2°C and nights cool to about 15.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 24 mm of rain on roughly 4 days, which makes March a fairly dry month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 18 min on an average March day.
The nearest other city in this atlas is Rawson (5 km away). In March its highs average 26.9°C, about as warm as San Juan, Argentina, with 24 mm of rain.
Among the 67 cities listed in Argentina, San Juan, Argentina ranks 12th of 67 for the warmest March highs and joint 4th of 67 for the driest March (rainfall, lowest first). The mean March high of those 67 cities is 25.6°C; San Juan, Argentina is 1.6°C warmer than that mean.
From March to April, average highs fall by 4.0°C to 23.2°C, and monthly rainfall falls from 24 mm to 18 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 Juan, Argentina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.0°C19.2°C | 19.2°C | 17 | 3.2 | 13.914 h |
| February | 29.7°C18.0°C | 18.0°C | 20 | 3.4 | 13.213 h |
| March, selected | 27.2°C15.8°C | 15.8°C | 24 | 3.9 | 12.312 h |
| April | 23.2°C11.6°C | 11.6°C | 18 | 3.3 | 11.311 h |
| May | 19.6°C7.6°C | 7.6°C | 10 | 2.6 | 10.511 h |
| June | 17.4°C4.1°C | 4.1°C | 7.8 | 2.0 | 10.110 h |
| July | 16.4°C2.9°C | 2.9°C | 8.2 | 2.2 | 10.310 h |
| August | 19.4°C5.0°C | 5.0°C | 10 | 2.3 | 11.011 h |
| September | 21.8°C8.0°C | 8.0°C | 17 | 3.3 | 11.912 h |
| October | 25.1°C11.8°C | 11.8°C | 21 | 3.5 | 12.813 h |
| November | 28.0°C15.0°C | 15.0°C | 16 | 3.2 | 13.714 h |
| December | 30.3°C17.7°C | 17.7°C | 22 | 3.3 | 14.214 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
- Rawson in MarchArgentina · 5 kmHigh 26.9°C · Low 15.2°C · 24 mm rain
- Mendoza in MarchArgentina · 153 kmHigh 23.9°C · Low 14.4°C · 59 mm rain
- San Martín in MarchArgentina · 172 kmHigh 26.7°C · Low 16.3°C · 43 mm rain
- Colina in MarchChile · 274 kmHigh 27.7°C · Low 16.9°C · 14 mm rain
- Ovalle in MarchChile · 275 kmHigh 28.2°C · Low 16.3°C · 5.1 mm rain
- San Luis in MarchArgentina · 284 kmHigh 26.0°C · Low 16.4°C · 80 mm rain
- Peñalolén in MarchChile · 286 kmHigh 24.9°C · Low 14.4°C · 15 mm rain
- Quilicura in MarchChile · 289 kmHigh 26.5°C · Low 15.4°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 Juan) is explained once on the San Juan, Argentina year overview and on the Sources, method and limits page.
Rawson lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.