Just like the rest of Costa Rica, Monteverde has a dry season (December to May, when prices tend to be higher and crowds bigger) and a wet season (May to December). Here, though, the terms are relative. Because the park is in a cloud forest, the mountaintop reserves and the twin towns below them are often enveloped in a hybrid of wind, rain, and fog, which forms when warm air blows in from the ocean and rises up to the summits of the Tilaráns. The dry time of year isn’t freezing cold by any means (around 60 to 65 degrees), but it’s a shock to arrive from the tropics below.
As for the wet season? It’s sodden enough to make many of the hiking trails—not to mention the steep, winding access up from the Pan-American Highway—close to impassable. The months between August and November are particularly rainy, though you won’t have to wait in line for zip lines (or much else).
If you’re here for Independence Day (September 15), expect the streets to be filled with a parade of dancers, baton twirlers, and anthem singers. The biggest annual event is the two-month-long Monteverde Music Festival in January and February, when jazz, Latin, and classical music fills the air every Thursday through Saturday (tickets are often around $10).