1-Altitude Coast Rooftop Bar: Sentosa Pool Deck to 2 am

1-Altitude Coast is the rooftop bar on Level 7 of The Outpost Hotel Sentosa, 10 Artillery Avenue, Palawan Ridge, Singapore 099951, and it is adults only. The day club is open 11 am to 10 pm on Monday and Tuesday, 11 am to midnight on Wednesday, Thursday and Sunday, and 11 am to 2 am on Friday and Saturday.

The Far East Hospitality page for the venue calls it Sentosa's latest multi-concept rooftop lifestyle destination, perched on top of The Outpost Hotel, with an al fresco pool deck and an all-day casual dining restaurant called Sol & Ora. It claims two firsts: the country's first concept to take over the entire rooftop of a luxury hotel, and Sentosa's first and only rooftop dining destination that is adult-exclusive.

That adult-exclusive point is the whole personality of the place. There are no children splashing at the infinity pool, so the music can sit a notch higher in the afternoon and the mood stays closer to a beach club than a family resort. If you are travelling with kids, this is the one Sentosa rooftop that is not for the family itinerary, and the hotel's other properties on the island are the better fit.

The brand has a history in Singapore. Time Out Singapore reported in 2022 that 1-Altitude reopened as 1-Altitude Coast at Sentosa on 5 September, moving the rooftop concept from the city's skyscraper skyline to the island's southern edge. The rename is literal: the venue is a beachfront playground on a hotel roof, with panoramic views over Sentosa, Palawan Beach and the Singapore Straits.

For a visitor who knows the old downtown rooftop, the pitch is different. The old version sold height over the financial district, while this one sells sea air, a pool and a long afternoon. Go in expecting a day-to-night resort deck rather than a cocktail-lounge crush, and the experience matches what the venue says about itself.

The day club schedule is easy to remember once you split it into three. Monday and Tuesday are the quiet days and close at 10 pm. Wednesday, Thursday and Sunday run to midnight. Friday and Saturday are the late nights and close at 2 am. Every day starts at 11 am, so you can arrive for a late-morning swim.

The practical read is that Monday and Tuesday suit an early-evening drink, Sunday suits a long lazy afternoon that ends at midnight, and Friday and Saturday suit anyone who wants to stay up. If you have an early flight out of Changi, a Sunday visit is the least risky way to see the roof after dark.

Sol & Ora, the restaurant that shares the roof, has its own timetable. Breakfast runs from 7 am to 10.30 am every day. Lunch is served on Thursday and Friday from 12 pm to 2.30 pm. Weekend brunch runs on Saturday and Sunday from 11.30 am to 2.30 pm. High tea is served from Thursday to Sunday between 3 pm and 4.30 pm. Dinner is served Tuesday to Sunday from 6 pm to 10.30 pm.

Notice what is missing: there is no dinner on Monday and no lunch on Monday, Tuesday or Wednesday. If you plan a Monday sunset drink, eat before you come or order from the pool deck. A Thursday visit is the most flexible, since lunch, high tea and dinner all run that day and the day club stays open until midnight, so you can build a whole afternoon and evening around one address.

Start with the day. Weekends bring brunch at 11.30 am and a livelier deck, while weekdays are calmer and easier to book. Call or WhatsApp the number above to ask about pool deck access and tables, because the venue handles those requests directly and the hotel lists the number as the way to reach both the day club and Sol & Ora.

Dress as you would for a resort pool deck, with swimwear under a cover-up if you plan to use the infinity pool, and bring sun protection because the roof is open to the sky. Sentosa weather changes fast in the afternoon, so keep the late-afternoon plan flexible, and treat the 11 am opening as the safe window for clear skies and the best light on the water. Because the roof is one space with two operations, ask on the phone whether you want the day club, the dining room or both, and say whether you are coming for brunch, high tea or an evening drink so the team can point you to the right timetable.

The hotel is on Artillery Avenue in the Palawan Ridge area of Sentosa. The simplest way is a taxi or ride-hail straight to The Outpost Hotel entrance, then the lift to Level 7. Public transport on the island works too, but the hotel sits away from the main resort cluster, so a short ride at the end is usually easier than a long walk in the heat.

Plan your return before you go up. If you stay until 2 am on a Friday or Saturday, line up a ride-hail request from the hotel entrance before the last round. On Monday or Tuesday, when the roof closes at 10 pm, getting back is simpler, which is one more reason to treat those days as the relaxed option.

The deck looks out over the Singapore Straits, so the horizon is busy with ships rather than skyscrapers. The best light comes in the late afternoon, and a drink by the pool as the sky turns orange is the reason most people book the late-afternoon slot. If you want a skyline instead of a seascape, the better choice is a Marina Bay rooftop.

If 1-Altitude Coast is full, or you decide the island trip is too much, the honest alternatives are on the mainland. CÉ LA VI at Marina Bay Sands and Lantern at The Fullerton Bay Hotel both offer city views and different moods. Choose Sentosa when you want sea, a pool and an adults-only afternoon, and choose the bay when the evening skyline matters more.