Measured, not vibes
Best Time to Visit Buenos Aires
By measured weather comfort, the top months for Buenos Aires are October, April, November — and RouteVerdict's editorial pick, which also weighs crowds and prices, is March, April, May, September, October, November. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Buenos Aires (31 m elevation).
Month by month
Buenos Aires weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 28.7°C / 84°F | 7.2 | 70 | |
| February | 27.6°C / 82°F | 5.5 | 78 | Shoulder |
| March | 25.7°C / 78°F | 7 | 82 | |
| April | 21.3°C / 70°F | 6.3 | 86 | Best |
| May | 17°C / 63°F | 3.5 | 75 | |
| June | 14.8°C / 59°F | 5.3 | 59 | |
| July | 14.1°C / 57°F | 5.5 | 55 | |
| August | 15.9°C / 61°F | 4.5 | 67 | |
| September | 18.1°C / 65°F | 4.8 | 78 | |
| October | 21.6°C / 71°F | 6 | 87 | Best |
| November | 25.1°C / 77°F | 6.3 | 85 | Best |
| December | 27°C / 81°F | 6 | 80 | Shoulder |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Buenos Aires month by month
Buenos Aires' comfort score peaks in October at 86.9, with an average high of 21.6°C and 6 wet days, just ahead of April's 85.9 and November's 85.1. Summer (December–February) brings the hottest weather, up to 28.7°C in January, but comfort dips to 70–79.7 as heat intensifies — still solid, but below the autumn and spring shoulder peaks. Winter (June–August) is the low point, with highs of 14.1–15.9°C and comfort scores of 54.6–66.7, the coolest and least comfortable stretch of the year. RouteVerdict's editorial pick spans March through May and September through November, covering both shoulder seasons around summer and winter.
FAQ
Buenos Aires timing questions
What is the best month to visit Buenos Aires?
By measured weather comfort (ERA5 2020–2024), the top months are October, April, and November, with October scoring highest. RouteVerdict's editorial pick is March, April, May, September, October, and November, which also weighs crowds, prices, and events.
What is the hottest month in Buenos Aires?
January, with an average daily high of 28.7°C (84°F).
What is the rainiest month in Buenos Aires?
January, averaging 7.2 days with at least 1 mm of precipitation.
When is shoulder season in Buenos Aires?
December and February — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
Is Buenos Aires' summer (December-February) too hot to visit?
Not unbearable — highs reach 28.7°C in January, and comfort dips to 70–79.7 across the three months, lower than the shoulder-season peaks but still solidly comfortable.
What is Buenos Aires' single best month for weather?
October, with an average high of 21.6°C, 6 wet days, and a comfort score of 86.9 — the highest measured for any month.