The best time to go to Río Pico is during the Southern Hemisphere's summer months, specifically from December to March, for optimal weather and outdoor activities.
During this period, you'll experience the warmest temperatures and the most sunshine, with average daytime highs often reaching into the low to mid-20s Celsius. This makes it ideal for exploring the natural beauty of the region, including hiking, fishing, and kayaking. While it's generally pleasant, occasional summer showers can occur, so it's always wise to pack layers.
Anglers, in particular, will find these months superb for fly fishing, as the rivers and lakes are at their prime. The longer daylight hours also allow for extended time on the water, maximising your chances of a successful catch.
For those who enjoy a more relaxed pace and fewer crowds, the shoulder seasons of November and April can also be appealing.