Buenos Aires, Argentina skyline

Buenos Aires Weather in October

What October is usually like in Buenos Aires, Argentina — from 2006–2025 averages.

Expect Buenos Aires to reach about 20.8°C (69.4°F) by day and 13.5°C (56.3°F) at night in October, with 9 rainy days bringing 102 mm and around 10.2 hours of sunshine each day.

Avg high

20.8°C (69.4°F)

Avg low

13.5°C (56.3°F)

Rainfall

102 mm (4 in)

Rainy days

9 days

Sunshine

10.2 h / day

Humidity

72%

October vs the rest of the year

October is warmer than 5 of the other 11 months, and the 3rd wettest month in Buenos Aires.

MonthAvg highvs OctoberRainRainy days
January28.3°C (82.9°F)+7.5°C (+13.5°F)78 mm8
February27.3°C (81.1°F)+6.5°C (+11.7°F)111 mm8
March24.6°C (76.3°F)+3.8°C (+6.8°F)132 mm8
April21.3°C (70.3°F)+0.5°C (+0.9°F)91 mm7
May17.3°C (63.1°F)−3.5°C (−6.3°F)74 mm6
June14.4°C (57.9°F)−6.4°C (−11.5°F)49 mm6
July13.8°C (56.8°F)−7°C (−12.6°F)66 mm7
August15.6°C (60.1°F)−5.2°C (−9.4°F)62 mm6
September17.9°C (64.2°F)−2.9°C (−5.2°F)80 mm7
October20.8°C (69.4°F)—102 mm9
November24.4°C (75.9°F)+3.6°C (+6.5°F)91 mm8
December27.2°C (81°F)+6.4°C (+11.5°F)77 mm8

What October feels like in Buenos Aires

In Buenos Aires, October brings mid-spring (Buenos Aires is in the southern hemisphere, so the seasons run opposite to Europe and North America). Afternoons are mild and comfortable for most people in light layers. There is little difference between day and night: nights stay mild, and evenings feel much like the afternoon. Humidity is on the high side, but mild temperatures keep it comfortable.

Rain in Buenos Aires in October

It is a changeable month: rain comes about one day in 3, with dry spells in between. When rain comes it is heavy, about 11.4 mm (0.4 in) per wet day, often in short, strong bursts. That is close to Buenos Aires's typical rain per wet day for the whole year (about 11.5 mm). It is among the three wettest months of the year.

Daylight and sunshine in October

In mid-October, sunrise is at about 6:12 am and sunset at about 7:06 pm (local time) — 12 h 54 min of daylight. The days are stretching out — 1 h 4 min more daylight than mid-September. The sun is out for roughly 79% of those daylight hours, so there are plenty of bright spells.

How October compares to the rest of the year

In Buenos Aires's temperature order, October sits as the 6th coolest month. Afternoons run 2.9°C (5.2°F) warmer than in September, with 22 mm more rain. November continues the upward trend. November averages a high of 24.4°C (75.9°F).

Who October suits

  • Sightseeing: a good fit — comfortable enough to explore on foot all day.
  • Parks & outdoor: a good fit — good conditions for sitting outside.
  • Beach: less ideal — too many rainy days.

Tips for visiting Buenos Aires in October

Rain Protection

A compact umbrella and a light waterproof jacket.

Sunglasses

Plenty of sun, so bring sunglasses and a cap.

Quick questions

How warm is Buenos Aires in October?

It feels mild: typical highs are 20.8°C (69.4°F), with lows near 13.5°C (56.3°F).

Does it rain a lot in Buenos Aires in October?

Yes, fairly — rain falls about one day in 3 and totals about 102 mm, so an umbrella is worth carrying.

What should I wear in Buenos Aires in October?

Pack rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.

Is October or November better for visiting Buenos Aires?

November, narrowly: it ranks #2 of 12 among Buenos Aires's months, against #4 for the other. November is warmer and has fewer rainy days.

Is October a good time to visit Buenos Aires?

Great

Great — comfortable temperatures, some rainy days (about 9), plenty of sunshine (10.2 h a day). Within Buenos Aires's own year, October ranks #4 of 12.

Warmer or drier places in October

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Buenos Aires weather by month.