Buenos Aires Weather in May
May in Buenos Aires brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 10°C (50°F). Rainfall is on the higher side this month, averaging around 63 mm (2.5 in), so keep a rain jacket handy.
Rainfall in Buenos Aires in May
Analyzing past climate data, one can expect approximately 7 days of rain, averaging 63 mm (2.5 in). Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Buenos Aires in May
If you're visiting Buenos Aires in May, expect perfect temperatures with highs of 20°C (68°F) and overnight lows of 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Buenos Aires in May
The month experiences a moderate amount of sunlight, with 167 hours of sunshine. This provides a nice balance between sunshine and clouds.
Wind Speed in Buenos Aires in May
May has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.
Average water temperature in May
The water is 17°C (63°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April, May, September, November and December typically offer the best weather for Buenos Aires.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Buenos Aires's climate page.
Buenos Aires Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Water Temperature
17°C (63°F)
Chance of Rain
23%
Precipitation
63 mm (2.5 in)
Rainy days
7 days
Humidity
77%
Windspeed
3 m/s (6 knots)
Sunshine
167 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Buenos Aires typically drop from around 20°C (68°F) at the start of May to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 11°C (52°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Buenos Aires in May
Browse day-by-day weather records for Buenos Aires spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Buenos Aires historical weather extremes in May
The extremes listed below come from historical weather data collected in Buenos Aires from 1976 through 2026.
- The warmest day in May was on May 19, 2008, with a maximum of 30°C (86°F).
- On May 28, 2007, Buenos Aires saw its coldest May day with temperatures maxing out at 5°C (41°F).
- Nighttime temperatures dropped to -3°C (27°F) on May 30, 2007, marking the coldest May night on record.
Best Places in Argentina in May
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Buenos Aires in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. The water temperature sits at about 17°C (63°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Buenos Aires in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Buenos Aires's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Buenos Aires climate overview or explore weather in Argentina.
