The official fly fishing season in Neuquén province runs from November 1 through May 31. Each period has a distinct character — this guide breaks down the season month by month so you can match your trip to your style of fishing. For the full destination overview, see our complete guide to fly fishing in Northern Patagonia.
November: Early Season
Rivers are full from snowmelt, and trout that haven’t seen a fly in months are aggressive and hungry. This is the best month for streamer fishing. Rivers are virtually empty compared to January. Weather is variable — cold mornings, afternoon wind, and occasional rain are normal. Make sure to check our packing list for layering advice.
December: The Dragonfly Hatch
The dragonfly hatch arrives on lakes like Lolog, Lacar, and Tromen near San Martín de los Andes, triggering some of the most spectacular dry fly fishing of the entire season. Book guides and accommodation well in advance if you are targeting December.
January and February: Peak Dry Fly Season
Water levels are at their lowest, temperatures are warm, days are long, and the riverbanks are thick with terrestrial insects. This is the period Patagonia is famous for. See our fly selection guide for what to pack during peak dry fly months. Lodges and top guides book out many months in advance. Prices are at their highest.
March: The Sweet Spot
Summer crowds thin, prices drop, and the fishing enters a new phase. Big brown trout start becoming more active as water temperatures begin to cool. Wind tends to be calmer than at the height of summer.
April: Fall Fishing
Poplars and willows turn gold and red, mornings are crisp, and rivers run low and clear. Brown trout are in pre-spawn mode and feed aggressively. Streamer fishing is the primary technique. Lodges and guides have their most available dates and competitive pricing.
How to Choose Your Month
Best dry fly fishing: January or February. Aggressive fish and empty rivers: November. Dragonfly hatch: December. Balance of fishing, fewer people, and scenery: March. Trophy browns, solitude, and fall colors: April. For cost comparisons across months, see our cost guide.