Buenos Aires weather in October
October is a fair month to visit Buenos Aires: highs of 16°C (61°F) and about 101 mm (4.0 in) of rain on average. Nights average 9°C (49°F) and cloud cover 58% (NASA POWER, 2001–2025 averages). The sea averages 14°C (57°F). It is the 6th driest month of the year and the 6th coolest. Compared with September, it is warmer and wetter; November brings highs of 19°C (67°F) and 106 mm (4.2 in) of rain.
Figures are long-term averages for Mar del Plata, the largest city in Buenos Aires. See below for other places.
Is October a good time to visit Buenos Aires?
fair month Weather score 60/100.
October is a fair month in Buenos Aires. The weather is usually best in Nov–Apr.
Does it rain a lot in Buenos Aires in October?
Some rain is normal: about 101 mm (4.0 in) falls in an average October. It is the 6th driest month of the year.
How warm is Buenos Aires in October?
Days average 16°C (61°F) and nights 9°C (49°F).
Buenos Aires weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 24°C (76°F) | 17°C (62°F) | 125 mm | 45% | 21°C (69°F) | best |
| February | 24°C (75°F) | 17°C (62°F) | 125 mm | 47% | 21°C (70°F) | best |
| March | 22°C (71°F) | 16°C (60°F) | 118 mm | 48% | 21°C (70°F) | best |
| April | 19°C (65°F) | 13°C (55°F) | 105 mm | 54% | 18°C (65°F) | best |
| May | 15°C (59°F) | 10°C (50°F) | 75 mm | 64% | 15°C (59°F) | fair |
| June | 12°C (54°F) | 7°C (45°F) | 62 mm | 64% | 13°C (55°F) | least pleasant |
| July | 11°C (51°F) | 6°C (42°F) | 70 mm | 67% | 10°C (51°F) | least pleasant |
| August | 12°C (53°F) | 6°C (43°F) | 78 mm | 62% | 10°C (50°F) | least pleasant |
| September | 13°C (56°F) | 7°C (45°F) | 77 mm | 59% | 11°C (52°F) | fair |
| October | 16°C (61°F) | 9°C (49°F) | 101 mm | 58% | 14°C (57°F) | fair |
| November | 19°C (67°F) | 12°C (53°F) | 106 mm | 49% | 16°C (61°F) | best |
| December | 23°C (73°F) | 15°C (58°F) | 115 mm | 46% | 18°C (65°F) | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Buenos Aires in October
Weather can differ a lot within Buenos Aires: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Mar del Plata | 16°C (61°F) | 9°C (49°F) | 101 mm | fair |
| Avellaneda | 20°C (68°F) | 15°C (58°F) | 109 mm | best |
| Bahía Blanca | 22°C (71°F) | 8°C (46°F) | 87 mm | best |
| Merlo | 23°C (73°F) | 11°C (51°F) | 113 mm | best |
| Quilmes | 20°C (68°F) | 15°C (58°F) | 109 mm | best |
| Laferrere | 22°C (72°F) | 10°C (49°F) | 110 mm | best |
| José C. Paz | 23°C (73°F) | 11°C (51°F) | 113 mm | best |
| Lanús | 20°C (68°F) | 15°C (58°F) | 109 mm | best |
| La Plata | 22°C (71°F) | 11°C (51°F) | 108 mm | best |
| Berazategui | 22°C (71°F) | 11°C (51°F) | 108 mm | best |
| San Miguel | 23°C (73°F) | 11°C (51°F) | 113 mm | best |
| Moreno | 23°C (73°F) | 11°C (51°F) | 113 mm | best |