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Buenos Aires in January: Weather, Average temperature and Climate

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

Weather in Buenos Aires in January 2025

Good Weather
Warm
☀️
Sunny
🌊
Comfortable water
Are you considering a trip to Buenos Aires in January? Well, the weather is usually on your side with an average maximum temperature of +82°F and about 12 sunny days. Just keep in mind that there may be some rain, with an average of 8 rainy days and 87 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • January is usually the hottest month of the year in Buenos Aires;
  • January is usually the driest month of the year in Buenos Aires

Average weather

☀️
+82°F
Avg. max. temperature
+52°F
Min.
+106°F
Max.
87 mm
Total precipitation
66%
Avg. humidity
3 m/s
Avg. wind
12 ☀️
Sunny Days
6 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Buenos Aires has good weather in January.

Average temperature in Buenos Aires in January

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

The temperature in January is +88°F on average, with a range between a maximum of +97°F during the day and a minimum of +63°F at night.

The average maximum temperature goes up 21% by the end of the month, compared with the beginning of the month, from +79°F to +86°F.

Is Buenos Aires warm or cold in January?

Buenos Aires is typically warm in January.

Maximum temperatures go up compared to the previous month from +81°F to +82°F. The minimum temperature also goes up from +66°F to +68°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

January is the hottest month in Buenos Aires, here is the comparison with other months:

Water temperature in Buenos Aires in January

Water in Buenos Aires in January is Comfortable. It varies from +73°F to +78°F, with an average of +75°F. This is almost similar to the air temperature, which averages +82°F.

The water temperature in January is one of the warmest of the entire 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 January?

The water in Buenos Aires in January is pretty comfortable (+75°F in average). Ideal for swimming, especially in outdoor pools and open water. Suitable for recreational and casual swimmers.
🦭
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
Don’t forget a large beach towel or two for drying off.

Climate in Buenos Aires in January

Buenos Aires weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+81°F+82°F+81°F
Min. temperature
+48°F+52°F+46°F
Max. temperature
+102°F+106°F+100°F
Rainfall
86 mm87 mm98 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+71°F+75°F+73°F
Humidity
66%66%70%
Air pressure
1010 HPa1010 HPa1012 HPa
Sunny days
121211
Cloudy days
565
Rainy days
888
Snowy days
000

January weather is still as good as in December. It’s getting warmer as January arrives. The average maximum temperature goes up from +81°F to +82°F during the day. Prepare for more rain. Average rainfall goes from 86 mm to 87 mm. Humidity levels don’t change as the month goes on, averaging around 66%. The average wind speed doesn’t change much during January, staying around 3 m/s. The amount of sunny days stay about the same, averaging 12 sunny days during the month.

February brings much the same weather, it remains good.

Wind

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

The average wind speed is 4 m/s getting up to 7 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 January, going from 5 m/s to 5 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Buenos Aires based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in January stands at 16%, leading to total precipitation of around 55 mm. The maximum amount of rainfall per day is around 27 mm, which is moderate rain. On average, there are about 5 rainy days during January, so prepare to bring an umbrella.
Here’s how January 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 January in Buenos Aires?

This is the weather in Buenos Aires in January 2023:
1 January
☀️
+78°F
2 January
☀️
+85°F
3 January
☀️
+89°F
4 January
☀️
+85°F
5 January
☀️
+88°F
6 January
☀️
+90°F
7 January
☀️
+88°F
8 January
☀️
+86°F
9 January
☀️
+88°F
10 January
☀️
+91°F
11 January
☀️
+81°F
12 January
☀️
+84°F
13 January
☀️
+86°F
14 January
☀️
+87°F
15 January
☀️
+93°F
16 January
☀️
+96°F
17 January
☀️
+92°F
18 January
☀️
+83°F
19 January
☀️
+87°F
20 January
☀️
+88°F
21 January
🌧️
+89°F
22 January
☀️
+94°F
23 January
☀️
+87°F
24 January
☀️
+91°F
25 January
☀️
+90°F
26 January
☀️
+88°F
27 January
☀️
+84°F
28 January
🌫️
+86°F
29 January
☀️
+82°F
30 January
☁️
+84°F
31 January
☀️
+86°F
In January 2023 Buenos Aires had 28 sunny days, 1 cloudy days, and 1 rainy days. The average maximum temperature was +88°F, with an absolute maximum of +97°F and a minimum of +79°F. The average humidity was 60%, with a maximum of 95% and a minimum of 18%. The average wind speed was 4 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change Over the Years

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

The climate in Buenos Aires in January 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 January:

Is January a good time to visit Buenos Aires?

January is a really good time to go to Buenos Aires. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Buenos Aires.

Can you sunbathe in Buenos Aires in January?

January is warm in Buenos Aires. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Buenos Aires in January?

Yes, the water temperature in Buenos Aires in January is considered moderate and enjoyable for most people, averaging around +75°F.

Is Buenos Aires rainy in January?

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

Is it sunny in Buenos Aires in January?

The amount of sunny days in Buenos Aires during January 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.