What to Wear in Rio de Janeiro in December

Pack white, and pack for walking. INMET's hourly records at Forte de Copacabana, averaged over 2007–2024, give December 29.1°C by day and 22.2°C at night, with 139mm of rain over about 10 days. The month builds to the Réveillon on Copacabana, where people have gone to the beach in white since Umbanda gatherings on the sand in the 1950s: they "passaram a ir à praia vestidas de branco", Agência Brasil reported, to make offerings to Iemanjá and jump seven small waves. The 2026–27 programme had not been announced as of 27 September, but last year's operation sets the terms. Avenida Atlântica closed to traffic at 7am, every road into Copacabana was blocked from 9pm, and pedestrian entrances had search points. The metro ran on passes bought in advance and refused anything over 25 litres, bottles and boards. Riotur's president Bernardo Fellows called the night "o Rio reafirmando seu lugar como a capital mundial da virada", Rio reaffirming itself as the world capital of New Year's Eve. So dress in white, carry little, and wear shoes you can walk a long way in.

The capsule

1. 
   01

   White sleeveless tiered fringe dress

   Your Réveillon dress. White on Copacabana on 31 December goes back to the Umbanda gatherings of the 1950s, when people came to the beach in white to leave offerings for Iemanjá. Tiers of fringe move in a sea breeze and catch the light of the fireworks, which last year ran for 12 minutes from 19 barges, and a sleeveless cut stays cool in a crowd of millions.

2. 
   02

   White oversized linen shirt

   December is the Sociedade Brasileira de Dermatologia's Dezembro Laranja, its skin-cancer month, and the society's Dra. Bianca Costa Soares de Sá pairs sunscreen with "proteção física (sombra, roupas e chapéus)", shade, clothing and hats, for long exposure. A long-sleeved linen shirt is that clothing. It goes over the bikini at midday and over the silk shell in the evening, and it stays white for the 31st.

3. 
   03

   Ivory wide-leg linen trousers

   For the Festa de Iemanjá on Tuesday 29 December, when the procession from the Mercadão de Madureira reaches Copacabana around 3pm to launch its offering boats at Posto 4, and for Christmas Eve dinner on the 24th. Wide linen legs stay cool at 29°C and keep you in white without a dress.

4. 
   04

   Buttercream silk shell

   Under the linen shirt or on its own with the trousers. A sleeveless silk shell weighs almost nothing, dries fast on a humid 22°C night, and buttercream keeps the palette pale without the glare of bright white.

5. 
   05

   Sunflower-yellow triangle bikini

   For the beach days between Christmas and New Year, when the afternoon averages 29°C. A triangle top and tie sides dry fast between swims, and sunflower yellow shows under a white shirt thrown over it. Swim at a green flag; the state fire brigade flies red where the risk is high.

6. 
   06

   Tan leather slingback sandals

   Last year Avenida Atlântica closed to traffic at 7am on the 31st and every road into Copacabana was blocked from 9pm, so the night is on foot, in and out, much of it on sand. A buckled back strap keeps a flat sandal on in soft sand and through a crowd, and tan leather goes with white.

7. 
   07

   Round raffia crossbody

   Small enough for the search points that stood at Copacabana's pedestrian entrances last year, when the metro also turned away anything over 25 litres. A round raffia crossbody holds a phone, a card and a metro pass, rides in front of you in a crowd of 2.6 million, and looks right with white.

8. 
   08

   Blue and white striped pleated shorts

   For the daytime between the big nights: Christmas Day is a Friday holiday, and the long weekend runs to the 27th. Pleated shorts go over the bikini and under the linen shirt, and blue and white stripes add one colour to a mostly white suitcase.

A suggested look — white tiered fringe maxi dress, tan leather slingback sandals.

What to avoid

• A bag over 25 litres on New Year's Eve — last year's metro refused it
• Waiting to buy the Réveillon metro pass — last year's was sold in advance only
• Heels on the 31st — you walk in and out on sand
• Glass on the beach — barred all year by Decreto Rio 56.160
• The midday sun — the SBD advises shade from 9am to 3pm