Buenos Aires weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: September – May
What is the weather like in Buenos Aires in May?
In May, Buenos Aires is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 60 mm. All in all, May is an excellent month for a holiday in Buenos Aires.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 10 h 21 min07:39 – 18:00
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 54 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−3America/Argentina/Buenos_Aires
How the score comes together
- Temperatureweight 50 %91 %
- Sunshineweight 20 %43 %
- Few rainy daysweight 30 %86 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- A jumper for the evenings
Buenos Aires in May: quick answers
Is Buenos Aires hot in May?
No. In May, Buenos Aires is mild: daytime highs average 17 °C and nights drop to about 11 °C.
Can you swim in Buenos Aires in May?
Only if you don't mind cold water: in May the sea averages just 17.3 °C. Comfortable swimming is possible from November to April.
Does it rain much in Buenos Aires in May?
Rain falls on about 6 days, adding up to 60 mm.
Buenos Aires month by month
The whole year in Buenos AiresAll destinations: ArgentinaWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)