01Weather
Buenos Aires weather in January
Afternoons in January average 29.7 °C (85 °F) and nights cool to 21.1 °C (70 °F). The month brings about 131 mm (5.2 in) of rain spread over roughly 10 days. Compared with December it is 1.4 °C warmer; February is 0.9 °C cooler again.
What the averages hide
| In a typical January | Value | What it means |
|---|---|---|
| Warm afternoons (90th percentile) | 34 °C / 92 °F | one day in ten is at least this warm |
| Cool afternoons (10th percentile) | 26 °C / 80 °F | one day in ten stays below this |
| Cold nights (10th percentile) | 18 °C / 64 °F | one night in ten is colder than this |
| Days above 30 °C (86 °F) | 14.0 | per month, average 2016–2025 |
| Nights at or below 0 °C (32 °F) | 0.0 | frost mornings per month |
| Chance of rain on any given day | 32 % | at least 1 mm |
| Hottest / coldest January day 2016–2025 | 37.0 °C / 12.1 °C | extremes in the ten-year record |
02Daylight
Sunrise, sunset and the length of the day
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 1 January | 05:44 | 20:09 | 14.4 h |
| 15 January | 05:56 | 20:09 | 14.2 h |
| 31 January | 06:13 | 20:00 | 13.8 h |
Daylight shrinks by about 36 minutes over the month. Times are local (America/Argentina/Buenos_Aires).
03Crowds
How busy Buenos Aires is in January
moderate The main sights are moderate in January. What drives it:
- summer heat
- Argentine summer holidays, many locals at the coast
- New Year
04Public holidays
Public holidays in January 2027
| Date | Holiday |
|---|---|
| 1 Jan 2027 | New Year's Day |
On public holidays many shops close and museums run on Sunday hours; check opening times for the day before and after as well.
05Events
What's on in Buenos Aires in January
No major recurring events fall in January.
07Packing
What to pack for Buenos Aires in January
- light, breathable clothing
- sun hat and sunscreen
- refillable water bottle
- a compact umbrella or hooded rain jacket, rain falls on roughly one day in three
- something for heat: 14 days a month pass 30 °C on average
08Editor's notes
What the numbers don't tell you
January is high summer, hot and humid with afternoons above 30 °C and sudden storms on about nine days, and many porteños away at Mar del Plata, so some theatres, restaurants and shops close or shorten hours. The city feels relaxed and parking is easy. Hotel rates are moderate, and the parks and the Costanera are the escape from the heat. The Teatro Colón is closed for its summer break.
The Buenos Aires Trans and the summer tango shows run in the tourist venues. The Tigre delta, an hour by train, is the local weekend escape with its river boats. Daylight runs from about six in the morning to eight at night. For the hot, sticky month with Carnival parades, see February.
09Compare
Buenos Aires month by month
| Month | High | Low | Rain days | Sun h | Crowds | Verdict |
|---|---|---|---|---|---|---|
| January | 30 °C | 21 °C | 10 | – | moderate | Excellent |
| February | 29 °C | 21 °C | 10 | – | moderate | Excellent |
| March | 26 °C | 19 °C | 9 | – | busy | Good |
| April | 23 °C | 16 °C | 10 | – | busy | Good |
| May | 19 °C | 12 °C | 8 | – | moderate | Excellent |
| June | 16 °C | 9 °C | 6 | – | quiet | Good |
| July | 15 °C | 8 °C | 8 | – | moderate | Good |
| August | 17 °C | 10 °C | 8 | – | quiet | Excellent |
| September | 19 °C | 12 °C | 8 | – | moderate | Excellent |
| October | 22 °C | 14 °C | 10 | – | busy | Good |
| November | 26 °C | 17 °C | 9 | – | busy | Excellent |
| December | 28 °C | 19 °C | 9 | – | busy | Good |
Not sure about January? See the best time to visit Buenos Aires.
10Elsewhere
January in nearby cities
| City | High | Rain days |
|---|---|---|
| Rio de Janeiro in January | 31 °C | – |
| Cancún in January | 27 °C | – |
| Miami in January | 25 °C | 5 |
| Orlando in January | 22 °C | 2 |
| New York City in January | 5 °C | 8 |
| Toronto in January | 0 °C | 10 |
11FAQ
Buenos Aires in January: your questions
Is January a good time to visit Buenos Aires?
January is one of the best months to visit Buenos Aires. Daytime highs average 30 °C (85 °F), rain falls on about 10 days, and hotel arrivals run above the yearly average, so the main sights are moderate.
What is the weather like in Buenos Aires in January?
Expect warm days around 30 °C (85 °F) and nights near 21 °C (70 °F). One January in ten brings afternoons above 34 °C, and one in ten stays below 26 °C.
Does it rain a lot in Buenos Aires in January?
January brings about 131 mm (5.2 in) of rain over roughly 10 days, which is showery by Buenos Aires standards. On any given day the chance of at least 1 mm of rain is 32 percent.
What should I wear in Buenos Aires in January?
Pack light, breathable clothing, sun hat and sunscreen, refillable water bottle.
Is Buenos Aires crowded in January?
The main sights are moderate in January. Main drivers: summer heat; Argentine summer holidays, many locals at the coast; New Year.
What time does it get dark in Buenos Aires in January?
Around the middle of January the sun sets at about 20:09 and rises at 05:56, giving 14.2 hours of daylight.