Yaxchilán lies in the lowland rainforest of eastern Chiapas, where it is hot and humid all year. There are two seasons: a drier season from about November to April and a rainy season from about May or June to October, when heavy afternoon storms are common. The site is open all year, and the boats run in every season.
Yaxchilán month by month
Conditions below are typical patterns, not forecasts; they vary from year to year.
| Month | Season | Conditions | Verdict |
|---|---|---|---|
| January | Dry | Warm days, cooler mornings, occasional northers | Excellent |
| February | Dry | Drier, pleasant, clear river | Excellent |
| March | Dry | Hot and dry; Easter crowds possible | Very good |
| April | Dry | Hottest time of year, low river | Good (early starts) |
| May | Transition | Very hot and humid, first storms | Fair |
| June | Rainy | Afternoon storms, green forest | Fair |
| July | Rainy | Rain, humid; summer holidays | Fair |
| August | Rainy | Rain and mosquitoes | Fair |
| September | Rainy | Often the wettest month; high river | Poor to fair |
| October | Rainy | Heavy rain possible, easing late | Fair |
| November | Dry | Rains ending, lush and quiet | Very good |
| December | Dry | Pleasant; busy at Christmas | Excellent |
Dry season: November to April — the best time
Less rain, drier paths, fewer mosquitoes and pleasant mornings on the river. December to February are the most comfortable months; March and April are hotter, often well above 30 °C at midday, but still dry. This is also the best time for the turquoise water at Agua Azul.
Rainy season: May/June to October
Rain usually falls in heavy afternoon bursts, the forest is at its greenest and the river runs high and fast. Tours still run, but paths are muddy, mosquitoes are fierce and storms can delay boats. September is typically the wettest month. Mornings are often fine, so start early.
Crowds
Yaxchilán is never really crowded. The busiest times are the Christmas and New Year holidays, Semana Santa (Easter week) and the July–August Mexican summer holidays, when Palenque hotels also fill up — book ahead then.
What to pack by season
- Dry season: hat, sunscreen, light long sleeves, plenty of water, a light layer for early mornings on the river.
- Rainy season: a light rain jacket or poncho, a dry bag for your phone, shoes with grip and strong insect repellent.
- Always: a torch for the Labyrinth and cash in pesos.
