There's a moment every Seoul summer when the heat stops being charming and starts being genuinely oppressive — 34°C, pavement radiating, subway platforms offering little relief. That's when you remember: the river is right there, and it has swimming pools.

Seoul's Han River parks run six outdoor pools and water playgrounds from June 19 through August 30, 2026 — roughly 73 days of public water access, smack in the middle of the city, for as little as ₩3,000 (about $2.20 USD). No membership, no reservation required. Just show up.

What's Open in 2026 — The Quick Overview

Two types of facilities operate along the Han River this summer:

• Swimming pools (chlorinated, deeper water, proper lap areas): Ttukseom and Yeouido

• Water playgrounds (물놀이장, splash zones with fountains and shallow water, great for kids): Jamsil, Nanji, Yanghwa, and Gwangnaru

💡 TIP: If you want to actually swim laps or float in proper pool water, head to Ttukseom or Yeouido. The other four sites are wade-and-splash zones — wonderful for families, but not what you're picturing if you want to do freestyle intervals.

One note for regulars: Jamwon Pool is closed for remodeling in 2026 (Mangwon also sits this season out). Gwangnaru is the newest addition to the lineup — a natural-materials water playground making its debut this year.

Prices & Hours at a Glance

Admission Fees

• Adults (19+) — pool ₩5,000 (~$3.65) · water playground ₩3,000 (~$2.20)

• Teens (13–18) — pool ₩4,000 (~$2.90) · water playground ₩2,000 (~$1.45)

• Kids (6–12) — pool ₩3,000 (~$2.20) · water playground ₩1,000 (~$0.75)

• Under 6 — free, but you must show proof of age (a physical document — screenshots and photos of documents are not accepted)

These are genuinely some of the cheapest recreational facilities in any major city. Bring cash just in case, though most venues accept cards.

Operating Hours

• Daytime (all six locations) — 9 AM–6 PM, no closing days all season

• Night session (from July 3) — 7 PM–10 PM at Ttukseom, Yeouido, Jamsil, and Nanji

• Yanghwa & Gwangnaru — daytime only, no night session

A few rhythm rules to know: there's a 15-minute safety break every hour, the water closes during lunch (12–1 PM) and dinner (6–7 PM), and water activities end 30 minutes before closing time.

💡 TIP: Don't arrive at 6:15 PM expecting to jump straight in — the 6–7 PM dinner break means everyone is out of the water anyway. Use that window to grab food from a nearby convenience store or delivery app, then re-enter when the night session opens at 7.

Night swimming, which ran as a short 26-day pilot in 2025, now runs from July 3 all the way to closing day — and not just at the two pools, but at the Jamsil and Nanji water playgrounds too. If you've ever wanted to float in an outdoor pool while Seoul's skyline glows around you, this is your year.

The Six Locations: What to Expect

Yeouido Pool (여의도 수영장)

The biggest in the Han River system, with a reported capacity of around 3,600 people. Fountains, multiple pool sections, and easy access from the financial district make this one genuinely buzzing on weekday evenings. A community outreach event here in 2026 will also provide free swimming experiences for 250 children — a nice sign of how seriously the city takes this space.

💡 New this summer: Uber has opened a dedicated lounge and taxi pick-up/drop-off zone right at the Yeouido pool, with in-app guidance to the exact spot. If you already use the Uber app, this is now the lowest-friction way to arrive — no wandering the park looking for your driver with wet hair and a pool bag.

📍 Getting there: Yeouinaru Station (Line 5), Exit 2, then a short walk into Yeouido Hangang Park — follow the riverside signs to the pool.

Ttukseom Pool (뚝섬 수영장)

The east Seoul favorite, popular with younger crowds and Seongsu-dong day-trippers. Night swimming here feels particularly atmospheric given the bend in the river and the park's relaxed vibe.

📍 Getting there: Ttukseom Resort Station (Line 7), Exit 2 — you'll practically be in the park already.

Jamsil Water Playground

📍 Getting there: Jamsilsaenae Station (Line 2), Exit 7, then about a 10-minute walk to the riverside through the Jamsilsaenae underpass.

Nanji Water Playground

📍 Getting there: Mapo-gu side. Take Bus 273 or 571 from Hapjeong Station (Lines 2 & 6). Night hours available here too.

Yanghwa Water Playground

📍 Getting there: Near Yanghwajin. Bus from Hapjeong or Mapo Station. Note the 6 PM closing time — plan accordingly.

Gwangnaru Water Playground

📍 Getting there: Gwangnaru Hangang Park. Take Line 5 to Gwangnaru Station, Exit 1, then walk about 15 minutes riverside.

💡 TIP: All facilities may temporarily suspend entry during heavy rainfall, typhoons, or poor air quality days (hwangsa, 황사 — yellow dust from the mainland). Check Seoul's official social channels or the Hangang Park website the morning of your visit during jangma (장마, Korea's rainy season, typically late June through late July).

Planning Your Visit: Practical Tips for Foreigners

What to Bring

• 💡 Swim cap — often required at Korean public pools, even outdoor ones. Grab one at any convenience store near the park entrance or at Daiso beforehand.

• 💡 Bringing kids? Life vests or swim tubes are mandatory for children in the youth and adult pools, and a guardian must accompany them.

• 💡 Waterproof bag for your phone and valuables

• 💡 Towel (not always rentable on-site)

• 💡 Sunscreen — the riverside has zero shade once you're in the pool area

Timing Strategy

① Early morning (9–11 AM): Least crowded, cooler, perfect if you want actual swimming space. ② Evening (7–10 PM): Night swimming atmosphere, significantly cooler temperatures. Weeknight evenings are your best bet to avoid the weekend rush. ③ Avoid: Saturday and Sunday afternoons in late July and August. With over 552,000 visitors using these facilities across the 2025 season — up 77% from 2024 — peak weekend hours can get very crowded.

💡 TIP: Delivery apps now accept international cards in Korea, which means you can order that iconic chimaek (치맥 — fried chicken and beer) combo straight to your picnic spot in the park after your swim. Download Baemin or Coupang Eats before you go.

A Word on the Lunch & Dinner Break

The pool closure windows (12–1 PM and 6–7 PM) aren't a nuisance — treat them as built-in picnic time. Spread out on the grass, grab something from the park's convenience store, and let the river do what it does best: make a regular Tuesday feel like a small vacation.

The Bigger Picture: Han River Summer in 2026

The numbers tell an interesting story. In 2024, around 311,000 people visited Han River outdoor pools. By 2025, that had jumped to over 552,000 — a 77% increase. Affordable, accessible, and genuinely fun, these pools have become one of Seoul's most democratic summer institutions: families, university students, office workers on their lunch break, tourists, and long-term expats all sharing the same rectangular patch of water under the same heavy summer sky.

The city is leaning into it, too. Special summer programming in 2026 includes live acoustic guitar performances, orchestral concerts, and water-themed music events at various locations throughout the season.

Quick Reference

• Ttukseom — pool · night session till 10 PM · adults ₩5,000 · Ttukseom Resort Station (Line 7)

• Yeouido — pool · night session till 10 PM · adults ₩5,000 · Yeouinaru Station (Line 5)

• Jamsil — water playground · night session till 10 PM · adults ₩3,000 · Jamsilsaenae Station (Line 2)

• Nanji — water playground · night session till 10 PM · adults ₩3,000 · bus from Hapjeong Station

• Yanghwa — water playground · closes 6 PM · adults ₩3,000 · bus from Hapjeong Station

• Gwangnaru — water playground · closes 6 PM · adults ₩3,000 · Gwangnaru Station (Line 5)

Daytime hours are 9 AM–6 PM everywhere; night sessions run 7–10 PM starting July 3.

Seoul isn't really a city that does "slow summers." But the Han River comes close — and for a few thousand won and a swim cap you remembered to pack, you can claim your own corner of it.

Found this useful? Save it for your summer planning and share it with a friend who's been complaining about the heat.

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