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Buenos Aires in May: Weather, Average temperature and Climate

Take a look at past year’s weather for Buenos Aires in May and see if it is worth visiting.
Check flight prices to Buenos Aires on Avionero:
May

Weather in Buenos Aires in May 2025

OK Weather
Mild
☀️
Sunny
🌊
Fresh water
Buenos Aires in May usually sees fair weather conditions, with an average daily high temperature of +64°F and roughly 11 sunny days. However, you should prepare for about 7 rainy days with an average precipitation of 62 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+64°F
Avg. max. temperature
+34°F
Min.
+86°F
Max.
62 mm
Total precipitation
77%
Avg. humidity
3 m/s
Avg. wind
11 ☀️
Sunny Days
11 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Buenos Aires has OK weather in May.

Average temperature in Buenos Aires in May

Here are the expected maximum, average and minimum temperatures in Buenos Aires for May based on the historical data.
Last Year
Historical Data

The temperature in May is +66°F on average, with a range between a maximum of +75°F during the day and a minimum of +41°F at night.

The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +66°F to +64°F.

Is Buenos Aires warm or cold in May?

Buenos Aires is typically mild in May.

Maximum temperatures go down compared to the previous month from +70°F to +64°F. The minimum temperature also goes down from +59°F to +54°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how May is compared to other months in Buenos Aires:

Water temperature in Buenos Aires in May

Water in Buenos Aires in May is Fresh. It varies from +58°F to +64°F, with an average of +61°F. This is almost similar to the air temperature, which averages +64°F.

In May, water temperatures are average relative to the rest of the year:

The warmest water temperatures in Buenos Aires are reached in January, when the average sea temperature rises to +75°F. The coldest water temperatures are in July, with an average of +53°F.

Can you swim in Buenos Aires in May?

Water temperature (+61°F) in Buenos Aires in May might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.

Climate in Buenos Aires in May

Buenos Aires weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+70°F+64°F+59°F
Min. temperature
+41°F+34°F+28°F
Max. temperature
+91°F+86°F+79°F
Rainfall
88 mm62 mm48 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+66°F+61°F+56°F
Humidity
75%77%77%
Air pressure
1015 HPa1016 HPa1017 HPa
Sunny days
121110
Cloudy days
71111
Rainy days
877
Snowy days
000

May weather is still as ok as in April. It’s getting colder in May. From +70°F in the day, the average maximum temperature lowers to +64°F. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 88 mm to 62 mm. Humidity rises from 75% to 77%. The average wind speed doesn’t change much during May, staying around 3 m/s. The days becoming less sunny, going from 12 sunny days in April to 11 in May.

June brings much the same weather, it remains ok.

Wind

Wind speed in Buenos Aires in May based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Buenos Aires is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Buenos Aires based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in May stands at 29%, leading to total precipitation of around 98 mm. The maximum amount of rainfall per day is around 32 mm, which is moderate rain. On average, there are about 9 rainy days during May, so prepare to bring an umbrella.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Buenos Aires wettest month is October, where a typical day has a 32% chance of precipitation and 102 mm of rainfall per day. June, on the other hand, is the driest month with a mere 23% chance of precipitation and 48 mm of rainfall per day.

How was the weather last May in Buenos Aires?

This is the weather in Buenos Aires in May 2023:
1 May
☀️
+65°F
2 May
☀️
+63°F
3 May
☀️
+63°F
4 May
☀️
+68°F
5 May
☁️
+68°F
6 May
🌧️
+68°F
7 May
☁️
+68°F
8 May
☀️
+68°F
9 May
☀️
+63°F
10 May
☀️
+65°F
11 May
☀️
+60°F
12 May
☀️
+64°F
13 May
☀️
+70°F
14 May
☀️
+75°F
15 May
☀️
+71°F
16 May
☀️
+74°F
17 May
☀️
+72°F
18 May
☀️
+69°F
19 May
☀️
+63°F
20 May
☁️
+60°F
21 May
☁️
+64°F
22 May
☁️
+66°F
23 May
🌧️
+68°F
24 May
🌧️
+69°F
25 May
🌧️
+68°F
26 May
🌧️
+68°F
27 May
☀️
+61°F
28 May
☀️
+55°F
29 May
☀️
+57°F
30 May
☀️
+59°F
31 May
☀️
+65°F
In May 2023 Buenos Aires had 21 sunny days, 5 cloudy days, and 5 rainy days. The average maximum temperature was +66°F, with an absolute maximum of +75°F and a minimum of +55°F. The average humidity was 78%, with a maximum of 100% and a minimum of 37%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Buenos Aires climate has changed over the last 43 years.

The climate in Buenos Aires in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1983 (+67°F) and the highest in 2017 (+72°F). The driest year was 2008 with only 468 mm of rainfall, and the wettest year was 2014 with 1388 mm.

FAQ

Frequently asked questions about the weather in Buenos Aires in May:

Is May a good time to visit Buenos Aires?

It’s always a good time to visit Buenos Aires, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Buenos Aires in May?

May has mild temperatures in Buenos Aires. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Can you swim in Buenos Aires in May?

In general, you can swim in Buenos Aires in May, if you want to, at an average water temperature of +61°F. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.

Is Buenos Aires rainy in May?

Buenos Aires is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Buenos Aires in May?

The amount of sunny days in Buenos Aires during May varies; prepare for a mix of clouds and sun.

Other cities in Argentina

Check out the weather for other cities in Argentina.

Monthly weather in Buenos Aires

Source of the data

For this page, we’ve looked at the typical weather in Buenos Aires, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.