September to November (spring). Mild temperatures (avg highs 64-75 F), jacaranda blooms, the Tango Festival in August-September, and lower crowds than summer. Avoids the humid January-February heat (avg high ~82 F) and the rainy season peak
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 83 | 70 | warm & mostly dry |
| Feb | 81 | 68 | warm & mostly dry |
| Mar | 76 | 65 | warm & mostly dry |
| Apr | 71 | 59 | mild & mostly dry |
| May | 63 | 52 | mild & mostly dry |
| Jun | 58 | 47 | cool & mostly dry |
| Jul | 57 | 46 | cool & mostly dry |
| Aug | 60 | 48 | mild & mostly dry |
| Sep | 64 | 52 | mild & mostly dry |
| Oct | 69 | 56 | mild & changeable |
| Nov | 76 | 62 | warm & mostly dry |
| Dec | 81 | 66 | warm & mostly dry |