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Lotte World Tower — Seoul Sky Visibility Today: Is It Worth Going Up?
One of the world's highest observatories — genuinely inside the clouds on an overcast day.
For tomorrow · 2026-09-28
93/100
Go up tomorrow — 18:00–19:00 is the window worth booking. Long, clean sightlines to the horizon.
Best window on 2026-09-28 is 18:00–19:00 local time.
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Weighing this against another deck? Seoul Sky vs N Seoul Tower today
Conditions at the deck · 27 Sept 2026, 23:00
- Temperature
- 16°C
- Cloud
- 13% · low 0%
- Wind
- 7 km/h · gusts 9
- Visibility
- 15 km
- Air quality
- AQI 117
Open-Meteo (forecast + air quality)
Altitude & cloud
Live· 23:08
Best window · 2026-09-2818:00–19:00Asia/Seoul
Why
- Long, clean sightlines to the horizon
- Golden hour — the best light of the day
- Only high cloud — the view underneath stays open
- Little chance of rain
- Operating status unconfirmed
Outlook · Asia/Seoul
- MonVIEW93
- TueVIEW88
- WedVIEW78
- ThuVIEW93
- FriVIEW94
Deck facts
- Seoul Sky, 117–118F
- 486 m above ground · 501 m ASL · Indoor
- Sky Bridge tour
- 541 m above ground · 556 m ASL · Outdoor
- Local timezone
- Asia/Seoul
Is it worth visiting on a cloudy day?
Seoul Sky, on the 117th and 118th floors of Lotte World Tower, is one of the highest observatories in the world — around 501 m above sea level, with the Sky Bridge higher still at roughly 556 m. At that altitude the tower is regularly above Seoul's cloud rather than under it, and on the right overcast day the observatory is looking down onto a layer that has the rest of the city in grey. The failure case is the opposite one and it is worth knowing about: when a deep layer envelops the building, you are inside cloud with no view at all, which is a more complete loss than a hazy day at half the height.
When is the best time to go up?
Seoul's air is cleanest in late autumn and winter behind cold fronts from the north-west, and haziest in spring when transported dust arrives — and at this altitude the horizon is most of what the ticket is for, so that seasonal pattern matters more here than at a lower deck. The observatory is enclosed, so the sky rather than comfort decides the day; the outdoor Sky Bridge is the exception, and wind is its limiting factor.
Common questions about Lotte World Tower — Seoul Sky
- Can you see above the clouds from Seoul Sky?
- Regularly, and more often than at almost any other deck on this site. The observatory sits around 501 m above sea level, above most of the cloud layers that form over Seoul. The condition that matters is the cloud *top*: below 501 m and you are looking down onto it, above 501 m and you are inside it. Those are opposite experiences from the same street-level forecast, and the verdict above distinguishes them for every hour of the day.
- Is the Sky Bridge tour worth it?
- The Sky Bridge is an outdoor walk at roughly 556 m, about 55 m above the enclosed observatory. Its value is the experience of being outside at that height rather than the additional altitude, which changes the view very little. Because it is outdoors it is the one part of a Seoul Sky visit where wind and weather bear directly on the day, while the observatory below is unaffected.
- How high is Seoul Sky?
- The observatory occupies floors 117 to 118 at 486 m above ground, roughly 501 m above sea level, in a building whose architectural top is 554.5 m. The Sky Bridge tour reaches 541 m above ground, roughly 556 m above sea level — the highest ticketed level covered on this site after Burj Khalifa’s SKY at 565 m.
- Seoul Sky or N Seoul Tower?
- Seoul Sky is roughly 40 m higher and enclosed; N Seoul Tower is lower, partly open, and stands on a mountain in the middle of the city. Seoul Sky is the better bet when cloud is the constraint, because it is above more of it. N Seoul Tower gives the more central view of the basin and the classic Han River sunset. Both are limited by the same particulate haze on the days when that is the binding factor.
Updated · Sources: Open-Meteo (forecast + air quality), ViewOrSkip published-hours calendar (Tier 1, day-level, no live feed)
Updated · Sources: Open-Meteo (forecast + air quality)