What to Wear in Tulum in December

Plan the month around the ruins. A presidential decree in force since 20 July 2026, and valid through 2027, set one 165-peso ticket for foreign visitors to the ruins and the Parque Nacional Tulum, plus 100 pesos for the Parque del Jaguar around them. CONANP's rules then set the day: day visitors enter between 8am and 5pm, may stay on the park's beaches until 7pm, and keep to the marked routes among the ruins. SMN's averages for its Tulum station give 29.1°C by day and a night that falls to 19.1°C / 66°F. Pack for sun on the routes, a swim from the park's beach, and dinner after the gates close.

The capsule

1. 
   01

   White linen shirt, long sleeves, chest pocket

   SMN's Tulum station averages 29.1°C on a December afternoon, and CONANP's rules keep you on the marked routes among the ruins. Long linen sleeves keep that sun off your arms without holding the heat, and the shirt goes on over the swimsuit at 8am. Roll the sleeves for the beach, then button it again for dinner on a night that falls to 19.1°C / 66°F.

2. 
   02

   Forest-green cotton chinos, straight leg

   Day visitors may enter the Parque Nacional Tulum from 8am, and an early start puts the ruins behind you before the afternoon reaches 29.1°C. Straight cotton chinos cover your legs through a long morning on the marked routes, and a straight leg stays clear of sandal straps. Forest green sits with the black hat and swimsuit and carries on to lunch in town.

3. 
   03

   Black webbing sport sandals, hook-and-loop straps

   One pair covers the whole day: the marked routes among the ruins in the morning, the park's beach until CONANP's 7pm close, then a cenote, where the municipality asks you to obey every posted sign. Hook-and-loop straps hold your foot in sand and water, and the treaded sole grips wet stone. Black webbing rinses clean of salt in a hotel shower.

4. 
   04

   Black cotton-twill wide-brim sun hat with a chin cord

   Sunrise on 15 December is at 7:18am, and by midday the ruins sit under a 29.1°C sun. A wide brim shades your face and neck on the routes, where CONANP expects you to stay. The chin cord holds it on in a sea wind and lets it hang down your back while you swim, rather than lie in the sand.

5. 
   05

   Washed-black V-neck one-piece, wide straps

   CONANP lets day visitors stay on the park's public-use beaches until 7pm, two hours after the ruins close, and the sea off Tulum averages about 27°C in December on NOAA's sea-surface analysis. Wear the one-piece under the shirt from the morning, so the swim needs no change of clothes. Wide straps stay put on a cenote ladder, and washed black hides sand.

6. 
   06

   Black leather flap crossbody

   A foreign visitor now pays twice: 100 pesos for the Parque del Jaguar and 165 for the ruins and national park. INAH asks you to buy only at the official INAH, Gafsacomm and CONANP windows, so keep both tickets on you. A flap crossbody holds them with water and sunscreen in front of you. Leave the beer behind: CONANP's rules bar alcohol from the park.

7. 
   07

   White cotton blouse, square neck, cross-stitch flowers at neck and hem

   Quintana Roo marks 21 December, a Monday in 2026, as the Día Nacional de la Cultura Maya. At the state's December 2025 gathering for the five Maya ceremonial centres, Tulum among them, Governor Mara Lezama set the aim of making Maya culture visible by wearing what its craftswomen make. A cotton blouse with cross-stitch flowers answers that at dinner, and stays cool on a 29°C day.

8. 
   08

   Terracotta linen midi skirt, ankle length

   CONANP admits day visitors to the Parque Nacional Tulum until 5pm but lets them stay on its public-use beaches until 7pm, and sunset on 15 December comes at 6:13pm. Pull an ankle-length linen skirt over the dry swimsuit on the sand and go straight on to dinner. Terracotta picks up the red cross-stitch on the blouse, and linen packs flat.

A suggested look — white linen shirt, washed-black v-neck one-piece swimsuit, forest green cotton chinos, black webbing sport sandals, black wide-brim sun hat.

What to avoid

• Tickets bought anywhere but the official INAH, Gafsacomm and CONANP windows
• Arriving at the ruins after the 3:30pm last entry
• Leaving the marked routes or crossing turtle-nesting sand
• Alcohol carried into the national park
• Fireworks on the park's beaches at New Year