Argentina (Patagonia, Parana & Buenos Aires coast) Fishing Calendar

Patagonia trout season opens 1 November and the best dry-fly months are December to February; sea-run browns in Tierra del Fuego peak in February and March. Pejerrey is a winter fish in the Buenos Aires lagoons, and the coast is best in late spring and summer. Each province sells its own fishing permit.

Government fish & wildlife updates

Provincia de Buenos Aires - DAPA — Closed seasons and daily limits (pejerrey veda)
CARU (Uruguay River commission) — Dorado closed season on the Uruguay River

Month by month

Peak (source says best)In season / caughtSpawningClosed seasonOpen, no official month data

Fish	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Notes
Patagonia freshwater
Rainbow trout (trucha arco iris)													A Chubut lodge says December to February have the steadiest weather and best dry-fly fishing. Neuquen's season runs 1 November to 31 May under the Direccion Provincial de Recursos Faunisticos; only a few special waters open in winter.^[1]^[2]^[3]
Brown trout (trucha marron)													Same lakes and rivers as the rainbows: December to February is the steadiest stretch for dry flies. Neuquen's season runs 1 November to 31 May; only a few special waters open in winter.^[1]^[2]^[3]
Sea-run brown trout (Rio Grande, Tierra del Fuego)													Season January to April; February and March are the most wanted dates, says The Fly Shop. Lodges on the Rio Grande are catch-and-release only.^[4]^[5]
Chinook salmon (salmon chinook)													Two runs in Santa Cruz: at Lago Argentino (Estancia Cristina) the season is January to March, best January-February for fresh fish; downstream at Comandante Luis Piedrabuena the run is August to early November (La Nacion).^[6]^[7]
Litoral & pampas freshwater
Golden dorado (dorado)													Lodges disagree: lower Parana runs June-October, upper Parana September and November-April; September-October is the only overlap, so no peak is shown. On the Uruguay River dorado is closed 1 September to 31 December (CARU); Entre Rios is moving to catch-and-release only.^[8]^[9]^[10]^[11]^[12]
Silverside (pejerrey)													Best in autumn and winter in the Buenos Aires lagoons. From 1 September to 30 November there is a provincial veda: sport fishing only on weekends and holidays, 10-30 fish a day depending on the lagoon, no contests.^[14]^[15]^[13]
Wolf fish (tararira)													In summer the Buenos Aires lagoons switch from pejerrey to tararira, carp and catfish (Canal 26).^[14]
Buenos Aires coast
Whitemouth croaker (corvina rubia)													Around all year near Samborombon Bay (C5N). A local paper rates November, December, March and April the best months on the piers.^[16]^[15]
Copper shark (bacota)													Summer is the best season off Bahia Blanca (La Nacion). In Buenos Aires province it may only be caught on rod and line and released (CONICET).^[7]^[17]

Never keep: In Buenos Aires province the sand tiger (escalandrun), copper shark (bacota), sevengill (gatopardo), hammerhead (martillo) and tope (cazon) may only be caught on rod and line and released.^[17]

Bait & rig for each fish

Rainbow trout (trucha arco iris)

Bait: Salmon roe and nightcrawlers where bait is legal.

Lures: Beads that look like salmon eggs, flesh flies, sculpin and leech streamers, small spinners and spoons.

Leader: 3X–5X tippet (4–8 lb), 7½–9 ft.

Full guide, knots & rigs →

Brown trout (trucha marron)

Bait: Worms and minnows where legal.

Lures: Streamers, nymphs, dry flies, spinners, spoons and stickbaits.

Leader: 3X–5X tippet (4–8 lb), 7½–9 ft.

Full guide, knots & rigs →

Chinook salmon (salmon chinook)

Bait: Whole or cut-plug herring and anchovies.

Lures: Hoochies and spoons behind a flasher, spinners and plugs in the rivers.

Leader: 20–30 lb fluorocarbon, 4–6 ft behind a flasher.

Full guide, knots & rigs →

Golden dorado (dorado)

Bait: Live morena (eel-like fish), small fish and crabs where bait is allowed.

Lures: Big spoons, deep-diving crankbaits, jerkbaits and large flies, all on wire leaders.

Leader: Wire or 60–80 lb fluorocarbon for toothy fish.

Full guide, knots & rigs →

Wolf fish (tararira)

Bait: Live small fish and frogs.

Lures: Weedless frogs, topwater plugs and spinnerbaits.

Leader: Wire or 60–80 lb fluorocarbon for toothy fish.

Full guide, knots & rigs →

Whitemouth croaker (corvina rubia)

Bait: Shrimp, small crabs, sand fleas, mullet, sardines and cut bait are common inshore choices; match the bait to the species and bottom.

Lures: Soft plastics, bucktails, small jigs, spoons, plugs and topwaters are common; imitate the local forage and work current edges.

Rig: Free-line, popping-cork, Carolina/fish-finder and light jig rigs are common; choose the least hardware needed to reach the zone.

Leader: 10–30 lb fluorocarbon/mono is a common flats/inshore start; move to 40–80 lb around abrasive mouths, structure or large tarpon/snook.

Full guide, knots & rigs →

Local fishing reports — what’s biting now

Cronica Pesca - El pique de la semana — Weekly report for the Parana delta, Rio de la Plata and Buenos Aires lagoons (Spanish)

Sources

Checked October 2026. BigJoe does not invent facts: every month on this calendar comes from the sources above. Empty boxes mean no official source gives those months. Rules change — check the agency page before you keep a fish.

On the bay, in the mangroves or on the ocean, the everyday struggles get left at the dock — for those few hours it’s just you, the water and peace.