The trout fishing season in Northern Patagonia generally runs from November through May, offering anglers nearly seven months of exceptional fishing across a wide variety of rivers and lakes.
Opening and closing dates may vary depending on the specific river or fishing area. Most waters open around November 1st and remain open through April 30th, while some destinations have extended seasons or different regulations.
Fishing regulations are updated each season by the local authorities and National Parks. For this reason, we recommend avoiding the very first days of November when planning a trip far in advance, as exact opening dates may vary slightly from year to year.
Throughout the season, water conditions, hatches, fishing techniques and weather change considerably, making each month a different experience. From spring fishing in November and December to summer dry-fly action and the spectacular fall fishing of March and April, there is no single “best” time to visit. The right time depends on the kind of fishing experience you are looking for.
From November through mid-December, Northern Patagonia is in full spring mode. Days can be sunny, windy or perfectly calm, and conditions can change quickly. No two springs are exactly the same, although the Andes help keep much of the Pacific moisture on the Chilean side of the mountains.
Depending on the previous winter’s snowfall and the timing of the spring runoff, water levels on some of the larger rivers may still be high. When that happens, we often turn our attention to smaller streams, side channels and shallower water, where conditions can be excellent.
Early season offers a wide variety of fishing opportunities. Nymphs, large dry-dropper rigs and streamers can all be highly effective, while warmer days can bring increasingly good dry-fly activity.
This is also a season of surprises. Some large trout that have moved through the river systems may remain in certain areas and take advantage of abundant food. Big brown trout are always a possibility, and early season can produce some truly memorable encounters.
From mid-December through mid-March, summer settles into Northern Patagonia and fishing conditions become increasingly consistent. Warmer days, generally milder winds and ideal water temperatures bring the rivers to life, with caddis and mayfly hatches creating excellent opportunities for surface feeding.
As water levels gradually drop, wading becomes easier and more areas of the rivers become accessible. Dry-fly fishing takes center stage, although nymphs, emergers and streamers remain important throughout the summer. On many rivers, attractor patterns and foam flies can also produce exciting takes, even when no obvious hatch is taking place.
Once summer is fully established, hatches become more predictable and the days are wonderfully long. This allows us to plan each fishing day around the best conditions, with plenty of time for a relaxed streamside lunch and, on hotter days, a well-earned break before returning to the water. Evening hatches can provide some of the most exciting fishing of the season.
This is a time of constant opportunity, both on the surface and below it. Depending on the river and conditions, we may fish small technical dries, larger attractors, terrestrials, dry-dropper rigs, nymphs or streamers.
Summer is also an excellent time for sight fishing, particularly on smaller rivers and clear-water fisheries, where large brown and rainbow trout can often be spotted feeding along banks, structure and shallow water.
January and February are among the most popular months of the season, both for visiting anglers and for summer travel within Argentina. If you are planning to fish during this period, we recommend booking well in advance.
