Hi fellow hiker,
Due to the proximity of the Andes mountains, the weather around Torres del Paine Park and El Chaltén is remarkably unpredictable. There are two components, however, which you will likely experience every day: wind and precipitation.
There is almost always a mild 9–13 mph (15–20 km/h) wind blowing through the region, with stronger winds likely. At their worst, these winds can reach 90 mph (150 km/h). These extreme gusts have been known to blow hikers off the trail and cause injury. These winds also blow moisture into the park, causing almost daily rain and occasional snow bursts.
You should see at least a bit of sunshine every day, hopefully after a rainstorm to dry you off. But because of the angle of the sun at this latitude, solar rays are more powerful and you’re likely to get burned if you don’t wear your sunscreen.
Note: If you’re taking the boat navigation on Lago Grey, severe weather can sometimes disrupt the voyage. In this case, you will need to take an alternate catamaran on Lago Pehoé to Paine Grande directly (or vice versa).
Best regards,
Pygmy Elephant