Here’s a great guide the the fishing seasons from our friends on the ground at El Encuentro in Patagonia

Patagonia’s long, varied fishing calendar is one of the reasons anglers return again and again, wanting to experience a different facet of the region every time. Each season offers a distinct personality, a different rhythm, and a unique way to experience the waters surrounding El Encuentro Lodge and the Chubut region.

Whether you dream of throwing hoppers on a hot summer afternoon or stalking browns in the soft light of fall, understanding Patagonia’s seasonal transitions will help you plan the perfect trip. Here’s a detailed look at what each part of the season offers, and how to choose the window that matches your style of fishing.

Early season: November and December

When the season opens in November, Patagonia feels like it’s waking up from a deep winter sleep. Rivers swell with snowmelt, valleys glow with fresh vegetation, and trout that haven’t seen flies in months are eager and aggressive. This is a time of rebirth, ideal for anglers who enjoy exploring dynamic conditions.

When to fish at El Encuentro in Patagonia, Argentina fly fishing, Aardvark McLeod

Why Fish the Early Season?

  1. Hungry, unpressured fish
    After months of no fishing pressure, trout feed with enthusiasm, often charging streamers or confidently rising to early dry-fly offerings. Not only that but you are able to enjoy time on the water without the crowds. Anglers who enjoy responsive fish and lots of action will find this time especially rewarding.
  2. Diverse fishing options
    Depending on conditions, you may alternate between streamers, large attractor dries, emerging mayflies, and nymphs. Flexibility is key, and the possibilities are endless.
  3. Explosive streamer fishing
    High, slightly off-color water creates textbook conditions for pitching streamers tight to structure. Trophy browns are more likely to chase and commit in November than later in the season. If you’re an angler who likes throwing big flies to big fish, this is your time.
  4. Comfortable temperatures and vivid scenery
    Spring in Patagonia feels alive. Snow still clings to the peaks while wildflowers blanket the meadows; the world is waking up again. It’s arguably the most beautiful time to be on the water.

Who Will Love This Window

Anglers who enjoy exploratory fishing, don’t mind changing tactics throughout the day, and love targeting aggressive trout. Streamer junkies, in particular, should circle November on their calendar. Travelers looking to experience early access to unpressured fish, isolated angling without the crowds and don’t mind variable weather conditions will enjoy this early season.

Mid-summer: Late December to February

If you’ve heard stories of Patagonia’s legendary dry-fly fishing, this is the season they’re referring to. From Christmas through late February, the region transforms into a terrestrial paradise. Long, warm days bring beetles, ants, and—most famously—hoppers by the millions.

Why Fish Mid-Summer?

  1. The best dry-fly fishing of the year
    This is when the true magic happens: thick-bodied browns smashing hoppers near the bank, rainbows leaping for beetles, and sight-casting opportunities in every direction.
  2. Consistent conditions
    Summer offers stable flows, reliable temperatures, and predictable feeding patterns. You can confidently plan full days of dry-fly fishing.
  3. Spring creek heaven
    This is the peak season for Patagonia’s intimate spring creeks. With clear skies and warm breezes, terrestrial fishing becomes nothing short of world-class.
  4. Variety at your fingertips
    Anglers staying at El Encuentro Lodge can rotate between spring creeks, freestone rivers, and stillwaters depending on preference and conditions—all of which fish exceptionally well this time of year.

Who Will Love This Window

Dry-fly purists. Sight-fishing fanatics. Anglers who appreciate technical presentations and heart-stopping surface takes. If you dream of long summer days and big trout eating hoppers, look no further.

Late Summer: March

By March, the frenzy of peak summer gives way to a quieter, more thoughtful season. The days shorten slightly, night time temperatures drop, and trout settle into a steady, predictable rhythm. Many anglers consider March Patagonia’s “sweet spot”—a blend of summer’s surface action and fall’s technical precision.

When to fish at El Encuentro in Patagonia, Argentina fly fishing, Aardvark McLeod

Why Fish Late Summer?

  1. Calm, consistent weather
    Late Summer is one of the least windy times of the season. Which makes for pleasant days and more delicate presentations, both perfect for spring creeks and subtle dry-fly fishing. As temperatures begin to cool off, so do water temperatures which is beneficial for both trout health and activity.
  2. Clear water = technical delight
    As flows stabilize, water clarity reaches its peak. Sightfishing becomes even more rewarding, particularly on meadow creeks and tailouts.
  3. Smooth, buttery hatches
    While terrestrials are still around, March often brings small mayfly and caddis emergencies that can create fantastic late-day dry-fly windows.
  4. Large fish in prime condition
    Trout have spent all summer feeding hard. Condition factors are unmatched… thick shoulders, vibrant colors, and powerful fights.

Who Will Love This Window

Anglers who appreciate precision dry-fly fishing, enjoy calm and stable conditions, and like the balance between terrestrial action and technical hatches.

Autumn: April to May

Late season in Patagonia is all about atmosphere: golden poplars, quiet rivers, crisp mornings, and trout that are feeding heavily before winter returns. It’s a deeply rewarding time to fish: subtle, soulful, and occasionally explosive. This is also the time of year when fish start migrating from lakes back into the rivers to spawn. This is a phenomenal time to fish pools where fish congregate as they search for suitable habitat to make their beds.

When to fish at El Encuentro in Patagonia, Argentina fly fishing, Aardvark McLeod

Why Fish Autumn?

  1. Trophy brown trout on the move
    Fall is the best season for anglers targeting big fish. Pre-spawn browns grow increasingly aggressive, especially during low-light windows and under changing weather.
  2. Streamer fishing heats up
    As water cools and trout shift into calorie-loading mode, streamers become deadly. Slow-swam patterns, articulated leeches, and sculpin imitations all shine this time of year.
  3. Solitude
    April and May see fewer anglers on the water. If you like having entire rivers to yourself, fall is your season.
  4. Majestic scenery
    Patagonia’s autumn colors are breathtaking, especially in the valleys around El Encuentro Lodge. Many consider this the most visually stunning time to visit.

Who Will Love This Window

Anglers seeking big trout, solitude, and the romantic feel of fall fishing—those who are happiest throwing streamers at structure while the leaves change overhead.

Brook Trout Base Camp, Argentina Fly Fishing, Aardvark McLeod

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For more information abut El Encuentro Lodge or fishing in Argentina in general, please contact Olly Thompson or phone 01980 847 389.

Charlotte Opperman, Aardvark McLeod

About the author

Charlotte Opperman

Charlotte's primary role at Aardvark McLeod is all things marketing – but she’s also got a keen eye for what appeals to the part-time fisher