San Cristóbal can be visited all year, but the season changes what you see and how comfortable you feel. The town is high and cool, the lowlands are hot, and the rainy season transforms the waterfalls. Here is how to choose a time that suits you.
The dry season, roughly November to April
This is the most popular period, with clear skies, sunny days and little rain. Waterfalls are usually at their clearest and most colourful, roads are easier and tours run on schedule. The trade-off is cold nights in the highlands, which can approach freezing in December and January, so pack warm layers. Prices rise during the Christmas and New Year holidays and in Holy Week, and popular tours and rooms fill early.
The rainy season, roughly May to October
Afternoon showers are common, and mornings are often clear. The hills turn green, the air is fresh and crowds are thinner. Waterfalls swell and may carry sediment, which can turn the water milky, and swimming is sometimes restricted for safety. Roads can be affected by landslides, so allow extra time and check with operators. Bring a waterproof layer and flexible plans. Many travellers find this a quiet and beautiful time to visit.
Temperature
In the town, days are mild and nights cold all year. The lowlands around Palenque and the Sumidero Canyon are hot and humid, particularly from March to June. Dress in layers, and pack for both a sweater and a swimsuit. In the dry season, sunlight at altitude is strong, so use sunscreen and a hat.
Festivals
Holy Week brings processions and crowds. In January, Chiapa de Corzo holds its great festival with dancers in masks. On December 12, the Guadalupe church is the centre of celebrations for the Virgin, with food and fireworks. At the start of November, the Day of the Dead is marked in cemeteries and homes, and visitors are welcome to observe respectfully. Carnival in Chamula in February is a significant event with its own traditions. Check dates with your hotel, as many festivals follow the religious calendar.
Crowds
Christmas, New Year, Holy Week and July and August are the busiest periods. Weekends are livelier, especially around the plaza. Sunday is market day in Chamula, with a large gathering. If you prefer calm, travel in the shoulder months of May, June, September and early November, though rainfall varies.
Best for waterfalls
The dry season usually gives clearer turquoise water, while the rainy season gives power but muddier colour. If colour matters to you, aim for February to April. If you love dramatic flow and green scenery, September can be rewarding but unpredictable.
Best for ruins
Palenque and Toniná are best in the dry season, when trails are drier, though the lowlands are hot all year. Go early in the morning to beat the heat. In the rainy season, mist over the temples can be atmospheric, but rain showers are frequent.
Best for photography and walks
Early mornings in the dry season give clear light over the town and the hills. Misty rainy-season mornings add mood. The viewpoint at Cerro de San Cristóbal is at its best on a clear morning.
Packing by season
Dry season: warm jacket, scarf, hat, gloves for early mornings, sunscreen, swimsuit and light clothes for the lowlands. Rainy season: waterproof jacket, quick-drying clothing, sturdy shoes and a dry bag. All year: comfortable walking shoes, a day bag, insect repellent and a reusable water bottle.
The bottom line
Choose the dry months for comfort and clear water, the shoulder months for calm, and the wet season for green landscapes and fewer visitors. In any season, give yourself a few days to adjust to the altitude and keep a flexible plan for the long day trips.
Health and comfort
Whatever the season, give yourself time to adjust to the altitude, drink plenty of water and use sun protection. In the lowlands, a light long-sleeved shirt, repellent and a hat protect against sun and insects. If you have a heart or lung condition, ask your doctor about travel at 2,200 metres. Travel insurance that covers activities such as swimming, canyoning and boat trips is wise, and a small first-aid kit is a good addition to your bag.