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Argentina🇦🇷 | beachesPlaya UniónRiver-mouth surf, Commerson’s dolphins, pier at dusk, grilled merluza | things to do and best time to go

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Backpacking in Playa Unión
👍 Recommendedbeach ranked #4
By Johan Kruseman 🇳🇱 | Updated October 19, 2026

Everyone online calls this a fishing village beach, but half of Playa Unión's summer crowd is actually there for dolphin-watching boats, not the sand. It sits on the Chubut River mouth in Patagonia, right where Rawson meets the Atlantic. The beach itself is wide, grey-brown sand, decent but not postcard-clear water, and cleaner than most people expect for a river mouth. Comparing it to Puerto Madryn's beaches up north is pointless, since those win on scenery and snorkeling; what Playa Unión has instead is the low-key vibe, cheap seafood, and a surf break that locals actually rate. I remember eating a whole grilled merluza for less than a movie ticket back home, feet in cold sand, watching fishing boats chug back in at dusk. Swimming works but bring a wetsuit mentality. Crowds stay thin except January. Budget beds are scattered nearby in Rawson.

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✨ Why go?
Ranked #4 beach in Argentina
What sets this place apart

Backpackers land here mostly because it's the anti-Madryn: cheaper, quieter, and refreshingly unbothered by tour buses. The affordability is real, think street-stall empanadas and river-view campsites instead of resort pricing. It works as a connector point on the Patagonian coastal route between Puerto Madryn and points south, so you stop for a night or two rather than building a whole trip around it. The social scene revolves around surf lessons and shared asados rather than nightlife, which suits people burnt out from bigger backpacker circuits. Water access is easy: you can walk straight from budget lodging to the sand in minutes. The laid-back atmosphere, fishing boats coming and going, locals fishing off the pier, gives it a working-town honesty that touristy beaches lose. It's also … read more 👉
Backpackers land here mostly because it's the anti-Madryn: cheaper, quieter, and refreshingly unbothered by tour buses. The affordability is real, think street-stall empanadas and river-view campsites instead of resort pricing. It works as a connector point on the Patagonian coastal route between Puerto Madryn and points south, so you stop for a night or two rather than building a whole trip around it. The social scene revolves around surf lessons and shared asados rather than nightlife, which suits people burnt out from bigger backpacker circuits. Water access is easy: you can walk straight from budget lodging to the sand in minutes. The laid-back atmosphere, fishing boats coming and going, locals fishing off the pier, gives it a working-town honesty that touristy beaches lose. It's also a launch point for dolphin-watching trips, which draws a mixed crowd of backpackers and Argentine families without ever feeling crowded.

💡 HighlightsTop highlights of Playa Unión

  1. Dolphin-Watching Boat Trips: Small boats head out from the river mouth to spot Commerson's dolphins, a small, striking black-and-white species found almost exclusively in these Patagonian waters. This is genuinely rare wildlife access, not a generic boat tour.
  2. Surfing the River Mouth Break: The mix of river current and ocean swell creates a consistent, uncrowded break that local surfers take seriously. Boards can be rented nearby, and lessons are informal and cheap compared to bigger surf towns.
  3. Sunset at the Pier: Fishing boats return in the early evening, and the light over the river mouth turns the water a genuinely different color than the open ocean beaches further north.
  4. Fresh Seafood at the Waterfront Stalls: Small, family-run spots near the shore serve the day's catch, usually merluza
… read more 👉
  1. Dolphin-Watching Boat Trips: Small boats head out from the river mouth to spot Commerson's dolphins, a small, striking black-and-white species found almost exclusively in these Patagonian waters. This is genuinely rare wildlife access, not a generic boat tour.
  2. Surfing the River Mouth Break: The mix of river current and ocean swell creates a consistent, uncrowded break that local surfers take seriously. Boards can be rented nearby, and lessons are informal and cheap compared to bigger surf towns.
  3. Sunset at the Pier: Fishing boats return in the early evening, and the light over the river mouth turns the water a genuinely different color than the open ocean beaches further north.
  4. Fresh Seafood at the Waterfront Stalls: Small, family-run spots near the shore serve the day's catch, usually merluza or other whitefish, grilled simply. It's a direct contrast to touristy seafood restaurants elsewhere on the coast, both in price and authenticity.
  5. Walking the Beach Toward Rawson: The stretch connecting Playa Unión to Rawson town gives you river views on one side and dune grass on the other, a low-effort way to see the geography that makes this river mouth beach distinct from typical ocean beaches.
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Things to do near Playa Unión

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🌤️ When to go?When to go for the best experience

  • Summer (December to February): Warmest window, air temps averaging 22-28°C (72-82°F), best for swimming and the peak season for dolphin tours, but also when prices and crowds hit their highest.
  • Shoulder Season (March, November): Milder temps around 15-20°C (59-68°F), fewer tourists, still enough daylight (roughly 13-14 hours) to enjoy full beach days without the summer premium pricing.
  • Winter (June to August): Cold and windy, often 5-10°C (41-50°F), daylight drops to around 9 hours, and most beach-focused businesses scale back or close.
  • Wind Patterns: Patagonian wind is a year-round factor, strongest in spring, so afternoons tend to get gustier than mornings regardless of season.
Aim for late January to catch warm water and dolphin season while dodging the worst of the Argentine domestic holiday crush earlier that month.

source: climatestotravel.comJANJanuary: excellent for travelingFEBFebruary: excellent for travelingMARMarch: highly recommended for travelingAPRApril: good for travelingMAYMay: good for travelingJUNJune: fair for travelingJULJuly: fair for travelingAUGAugust: fair for travelingSEPSeptember: good for travelingOCTOctober: highly recommended for travelingNOVNovember: highly recommended for travelingDECDecember: excellent for traveling
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🛏️ Where to stay?Where staying makes the most sense

Stick close to the beachfront strip itself if you want to roll out of bed and onto the sand, this stretch has a handful of budget guesthouses and campsites that cater specifically to travelers passing through on the Patagonian coastal route. It's social without being loud, mostly surfers and families rather than a party crowd. Alternatively, basing yourself a short distance away in Rawson town gives you more budget options, closer access to bus connections, and slightly cheaper food, at the cost of a short commute (walkable or a cheap taxi) to the beach. Rawson also has more of a working-town … read more 👉
Stick close to the beachfront strip itself if you want to roll out of bed and onto the sand, this stretch has a handful of budget guesthouses and campsites that cater specifically to travelers passing through on the Patagonian coastal route. It's social without being loud, mostly surfers and families rather than a party crowd. Alternatively, basing yourself a short distance away in Rawson town gives you more budget options, closer access to bus connections, and slightly cheaper food, at the cost of a short commute (walkable or a cheap taxi) to the beach. Rawson also has more of a working-town feel with real grocery stores and pharmacies, useful if you're restocking supplies. Camping near the river mouth is popular in summer and a solid option if you've got gear, with a genuinely social atmosphere among fellow travelers. Whichever you choose, safety is not a major concern in either area; it's a low-crime, low-hassle part of Patagonia overall.

🛡️ SafetyStaying Safe: What Travelers Should Know

Swimming here is generally manageable, but the river mouth creates currents that shift with the tide, so it's worth watching how the water moves before committing to a long swim rather than assuming it behaves like a calm ocean beach. Waves are moderate, good for surfing, less ideal for casual floating. There's no significant marine life hazard to worry about. Sun exposure is real even with the Patagonian wind masking the heat, so travelers underestimate it and end up burnt by afternoon. Locals tend to swim and fish nearer the pier area, which is a reasonable cue for where conditions stay calmer. Theft isn't a notable issue, but standard beach sense (not leaving bags unattended) still applies.

FAQCommon questions from travelers

Playa Unión sits right next to Rawson, about 20 km from Trelew in Chubut Province, Patagonia. Buses run regularly from Trelew's bus terminal to Rawson, and from there it's a short taxi or local bus ride to the beach itself. There's no train service; road transport is the only practical option.
Swimming is doable but the water stays cold most of the year and currents shift with the river mouth tide, so it's better suited to confident swimmers. Surfing is a real highlight here, with a consistent break that local surfers take seriously and board rentals available nearby. Snorkeling isn't a major draw due to limited visibility from the river sediment.
Yes, the beach itself is completely free and open to the public with no entry fee. You'll only pay for optional extras like dolphin-watching boat trips, surf lesson rentals, or food from the waterfront stalls.
⚠️ Things can change over time, so always validate details locally before you go.

Other Argentine beaches near Playa Unión

Explore more nearby:

  • Las Grutas—Low-tide sea caves, warm gulf water, cliff-path sunsets, seafood stalls| 279 km away
  • Playa Escondida—Official nudist beach, heated pool, cliffs and dunes, day-use balneario| 836 km away
  • Playa Popular—City-center sand, rambla promenade, paddle games, port sea lions| 866 km away

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We 💚 feedbackParting advice and final tips

Worth it for the dolphin-watching alone, seeing Commerson's dolphins from a small boat is rare and genuinely memorable. The drawback: the beach itself is mediocre for lounging, grey sand, cold water, and strong wind most afternoons. Go for the wildlife and surf, not for a classic beach day.

✈️ When did I visit Argentina?
I have visited Argentina, together with Chile, in September 2012.

✍️ Help improve this page!
The information on this page is based on my own backpacking experience in Argentina, supplemented with up-to-date research and feedback from other travelers. Travel details can change, so if you notice anything outdated or incomplete, feel free to let me know.



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Johan, backpacker and founder of TakeYourBackpackHi, I’m Johan (Netherlands 🇳🇱), the creator of TakeYourBackpack. Over the past 3 decades, I’ve backpacked through 90+ countries across six continents, gaining extensive experience with independent travel, long-term trips, and overland routes.

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