Buenos Aires, Argentina skyline

Buenos Aires Weather in May

Buenos Aires, Argentina in May: how the month usually turns out, from 2006–2025 averages.

A typical May day in Buenos Aires peaks at 17.3°C (63.1°F) and drops to 11.3°C (52.3°F) overnight; expect about 6 rainy days (74 mm in total) and 7.8 hours of sunshine daily.

Avg high

17.3°C (63.1°F)

Avg low

11.3°C (52.3°F)

Rainfall

74 mm (2.9 in)

Rainy days

6 days

Sunshine

7.8 h / day

Humidity

79%

May vs the rest of the year

On temperature, May beats 3 of 11 other months, and it ranks as the 4th driest month of the year.

MonthAvg highvs MayRainRainy days
January28.3°C (82.9°F)+11°C (+19.8°F)78 mm8
February27.3°C (81.1°F)+10°C (+18°F)111 mm8
March24.6°C (76.3°F)+7.3°C (+13.1°F)132 mm8
April21.3°C (70.3°F)+4°C (+7.2°F)91 mm7
May17.3°C (63.1°F)—74 mm6
June14.4°C (57.9°F)−2.9°C (−5.2°F)49 mm6
July13.8°C (56.8°F)−3.5°C (−6.3°F)66 mm7
August15.6°C (60.1°F)−1.7°C (−3.1°F)62 mm6
September17.9°C (64.2°F)+0.6°C (+1.1°F)80 mm7
October20.8°C (69.4°F)+3.5°C (+6.3°F)102 mm9
November24.4°C (75.9°F)+7.1°C (+12.8°F)91 mm8
December27.2°C (81°F)+9.9°C (+17.8°F)77 mm8

What May feels like in Buenos Aires

Late autumn arrives in Buenos Aires with May (Buenos Aires is in the southern hemisphere, so the seasons run opposite to Europe and North America). Expect cool, jacket-on afternoons — comfortable for a long walk. The gap between afternoon and night is small, so nights are cool and the temperature hardly changes after dark. The air is damp, which makes cool temperatures feel colder, particularly in wind.

Rain in Buenos Aires in May

Rain turns up now and then — about one day in 5. When rain comes it is heavy, about 12.3 mm (0.5 in) per wet day, often in short, strong bursts. The yearly figure is similar, around 11.5 mm per wet day.

Daylight and sunshine in May

In mid-May, sunrise is at about 7:39 am and sunset at about 6:00 pm (local time) — 10 h 21 min of daylight. Compared with mid-April, the day has lost 54 min. Measured sunshine covers about 75% of the daylight — there are plenty of bright spells.

How May compares to the rest of the year

May is the 4th coolest month of the year in Buenos Aires. Compared with April, afternoons are 4°C (7.2°F) cooler, with 18 mm less rain. June is cooler again. The next month's average high: 14.4°C (57.9°F).

Who May suits

  • Sightseeing: a good fit — comfortable enough to explore on foot all day.
  • Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
  • Beach: less ideal — the sea air is too cool.

Tips for visiting Buenos Aires in May

Rain Protection

A packable rain jacket saves the day on showery afternoons.

Light Jacket

A light jacket or knit layer is enough for most of the day.

Sunglasses

Frequent sunshine — sunglasses and a light hat.

Quick questions

How warm is Buenos Aires in May?

Expect around 17.3°C (63.1°F) in the afternoon and 11.3°C (52.3°F) at night, which most visitors would call cool.

Does it rain a lot in Buenos Aires in May?

Only moderately: roughly 6 wet days and 74 mm, usually moderate rain.

What should I wear in Buenos Aires in May?

The numbers point to rain protection, a light jacket and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.

Is May or June better for visiting Buenos Aires?

May, narrowly: it ranks #6 of 12 among Buenos Aires's months, against #7 for the other. June is cooler.

Is May a good time to visit Buenos Aires?

Good

Good — mild but cool days, some rainy days (about 6). Within Buenos Aires's own year, May ranks #6 of 12.

Warmer or drier places in May

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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.