What to Wear in Buenos Aires in January

Pack for two trips in one. SMN's figures for the Buenos Aires Observatorio make January the hottest month of the year, 30.1°C by day and 20.2°C at night, and the wettest, with 134.4mm over about 8 days and 6.2 thunderstorm days, the most of any month. The city empties at the same time. City schools finish on 18 December, and the Mar del Plata tourism board's arrivals data make January the resort's busiest month in 18 of the 19 years from 2007 to 2025. If you stay, the city government's summer advice sets the dress code: light, loose, pale clothing and no strong sun between 10 and 17h. If you follow the crowd to the coast, you need a swimsuit and a cover-up. So pack linen for the city, one dress for dinner, and a bikini, a sarong and alpargatas for the beach.

The capsule

1. 
   01

   Coral cotton slip dress, cowl neck, side tie

   Buenos Aires in January happens after dark. The sun sets at about ten past eight for the first half of the month, and SMN's average night is 20.2°C, so a cotton slip dress with thin straps is all you need at a Palermo table. The side tie keeps it fitted at the waist, and coral ties the pistachio shell to the blush sarong while navy and stone stay quiet.

2. 
   02

   Navy pleated wide-leg linen trousers

   The city government's summer advice is three words long: light, loose, pale. Linen is light, a wide pleated leg is loose, and navy is the exception you allow yourself because it hides a day of city dust and café chairs. At SMN's 30.1°C January afternoon the fabric stands away from your legs, and linen dries faster than denim after a thunderstorm in the wettest month.

3. 
   03

   Pistachio sleeveless V-neck silk shell

   Wear it with the navy trousers by day and under the blazer at night. A loose sleeveless shell leaves your arms out in 64.6% humidity, the air SMN records for January, and silk feels cool to the touch. Keep it for the shade and indoors: between 10 and 17h the city tells you to stay out of strong sun, and your shoulders would be bare.

4. 
   04

   Stone linen unstructured blazer

   A linen blazer is how you dress up for dinner without adding heat at 20°C. Unstructured and unlined, it goes over the pistachio shell or across the shoulders of the coral dress, and linen lets the humid air through. Stone sits between the navy trousers and the cream bag, so it works with everything packed here.

5. 
   05

   Emerald triangle bikini with a blush fringed cotton sarong

   Pack it because January is the coast's month. The Mar del Plata tourism board recorded 1,378,520 arrivals in January 2025, more than two and a half times its July figure. Tie-side bottoms and a halter tie adjust after a swim, and the blush cotton sarong knots at the hip for the walk off the sand to lunch. The city's advice applies at the beach too: reapply sunscreen after every swim.

6. 
   06

   Navy canvas alpargatas, flat jute sole

   Canvas uppers on a pressed jute sole: the alpargata went into factory production when the Fábrica Argentina de Alpargatas was constituted in 1885, with its works in Barracas. It breathes at 30°C, slips off at the sand line and back on for a walk along the rambla. Navy matches the linen trousers. Keep them out of a thunderstorm, because wet jute is slow to dry.

7. 
   07

   Cream leather bucket bag, silver toggle

   One bag for the city and the coast. A structured cream leather bucket holds sunscreen, a phone and the folded linen shirt, closes with a toggle on a crowded colectivo, and sits in the crook of your arm at dinner. Cream stays cool to the touch in 8.8 hours of daily sun, where a black bag left on a café table heats up.

8. 
   08

   Natural straw wide-brim hat, chocolate ribbon

   The city's summer advice asks for a hat, and a wide brim shades your ears and the back of your neck, where the same advice tells you to put sunscreen. Choose a tight weave like this one, not open crochet. Wear it between 10 and 17h in the city and all day on the beach, then leave it at the hotel after sunset, when the coral dress does the work.

A suggested look — coral side-tie slip dress, stone linen blazer, navy canvas alpargatas.

What to avoid

• A rain jacket — at 30°C / 86°F it turns into a sweat layer
• Jeans — the city asks for light, loose, pale clothing
• A walking tour between ten and five — the hours to stay out of strong sun
• The last weekend of January at the coast — occupancy peaked then in 2025
• One coat of sunscreen at the beach — reapply every two hours and after every swim