The best time to visit Central Argentina (Buenos Aires, Mendoza) is Aug–Jun. Month by month, the verdicts rate Aug–May as comfortable on both daytime heat and rainfall — 10 months in all.
Temperate; mild all year
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 27.3 | 81 | 32% | Go |
| February | 26.4 | 80 | 33% | Go |
| March | 24.7 | 76 | 30% | Go |
| April | 21.1 | 70 | 29% | Go |
| May | 17.5 | 64 | 23% | Go |
| June | 14.4 | 58 | 22% | Fair |
| July | 13.2 | 56 | 20% | Fair |
| August | 15.0 | 59 | 21% | Go |
| September | 16.8 | 62 | 22% | Go |
| October | 19.9 | 68 | 31% | Go |
| November | 23.1 | 74 | 29% | Go |
| December | 25.8 | 78 | 30% | Go |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
July is the driest month, with rain on 20% of days and daytime highs near 13.2°C (56°F). February is the wettest, at 33%. The warmest month is January at 27.3°C (81°F); the coolest is July at 13.2°C (56°F).