In short
- Dry season (Nov-Apr) offers clear water.
- Rainy season brings muddy river conditions.
- The Christmas Tree waterfall is best in fall.
In this article
Sumidero Canyon is open year-round, but water conditions change drastically with the weather. The time of year determines the river's color and the strength of the waterfalls.
When is the best time of year to visit Sumidero Canyon?
The best months are November through April during the dry season.
Visiting in the dry season guarantees sunny weather and calm navigation. The Grijalva River water remains clear. You avoid the heavy rains that wash mud and debris into the gorge.
What is it like during the rainy season?
The rainy season runs from May to October and turns the river muddy.
Heavy rains wash soil down the 1,000-meter canyon walls. The water turns brown and opaque. However, this is the only time to see the Christmas Tree waterfall at full flow.
| Season | Months | Water Condition | Waterfalls |
|---|---|---|---|
| Dry | Nov - Apr | Clear | Low flow |
| Rainy | May - Oct | Muddy | Strong flow |
Does the season affect wildlife viewing?
You can see animals year-round, regardless of the season.
American crocodiles, spider monkeys, and pelicans live in the canyon permanently. Boat guides will cut the engine and drift close to the crocodile banks in both dry and rainy months.
What should I pack for the weather?
Bring lightweight clothing for the heat and a windbreaker for the boat ride.
The canyon sits in a hot lowland climate. You need sun protection, a hat, and plenty of drinking water. The boats travel fast, so the wind makes it feel cooler. Bring a light layer, especially if you start early from San Cristóbal de las Casas.
Questions travellers ask
Can I take the boat tour in the rainy season?
Yes, boat tours operate year-round. Just expect muddy water instead of clear green.
When does the Christmas Tree waterfall flow best?
The waterfall is strongest during or just after the rainy season in summer and fall.
Is it colder at the viewpoints than on the boat?
Yes. Mirador Los Chiapa sits over 1,000 meters above sea level, making it cooler than the canyon floor.
