October–November (spring) or March–April (early autumn). Shoulder seasons offer mild temperatures, clear skies, thinner crowds, and lower prices than peak summer. Spring (Oct–Nov) brings flowering vegetation and pleasant warmth. Early autumn (Mar–Apr) coincides with the grape harvest season (vendimia) in Maipo Valley vineyards a short drive from the city. Both seasons avoid the peak-summer heat and winter rainfall
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 84 | 61 | warm & sunny |
| Feb | 83 | 61 | warm & sunny |
| Mar | 80 | 59 | warm & sunny |
| Apr | 73 | 53 | warm & sunny |
| May | 66 | 46 | mild & mostly dry |
| Jun | 60 | 42 | mild & mostly dry |
| Jul | 59 | 40 | cool & mostly dry |
| Aug | 61 | 42 | mild & mostly dry |
| Sep | 64 | 45 | mild & mostly dry |
| Oct | 69 | 49 | mild & mostly dry |
| Nov | 76 | 54 | warm & sunny |
| Dec | 81 | 58 | warm & sunny |