Onion 2 Restaurant
Grilled seafood done properly on Chaweng Beach Road, with a kitchen that actually listens to how you like it.
Plan your visit
- Hours
- Daily 11:00–02:00
Learn the Spice Scale
Say 'mai pet' for no spice, 'pet nit noi' for a little spice, or 'pet mak' if you want it Thai-hot. Most cooks will default to a toned-down version for foreigners unless you specify otherwise.
Details
- Phone
- 063 350 1760
- Website
- onion2restaurant.shop
Full opening hours
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Taste more of Koh Samui
Street-food tours, market visits and Thai cooking classes near Onion 2 Restaurant.
Why go, and how to do it well
Seafood is the reason to come here. Red snapper, tiger prawns, crab, lobster if you're feeling flush, all grilled and plated with more care than the average Chaweng Beach Road kitchen bothers with. Portions run large and food comes out fast, which matters when you've got a hungry table. Ask for spicy but not too spicy and the kitchen will get it right rather than nodding and ignoring you.
What keeps people coming back, judging by the reviews, is the floor staff. One server, Nico, gets named again and again. Someone will clean the crab for you if you'd rather not wrestle it. That kind of attention is rarer than it should be on this strip. The menu stretches well past Thai seafood too, so pizza, fried rice, spring rolls and cheese toast are all in play, and vegetarians get looked after properly instead of being handed a sad plate of vegetables. Prices land in reasonable territory for the location.
Written by Mac Kiley · Updated Sep 2026
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Taste more of Koh Samui
Street-food tours, market visits and Thai cooking classes near Onion 2 Restaurant.
Around here, on foot
Well-rated places within a short walk of Onion 2 Restaurant, nearest first. Minutes are at an easy pace in the heat.
- 1 minSarunya MassageWellness & Spas · 50 m · 4.3★
- 1 minOscars FashionMarkets & Shopping · 50 m · 5.0★
- 1 minSamui CuisineRestaurants & Food · 70 m · 4.7★
- 1 minRich ClubNightlife & Bars · 100 m · 4.1★
- 1 minOlive RestaurantRestaurants & Food · 110 m · 4.5★
- 1 minRed Fish Restaurant Koh SamuiRestaurants & Food · 110 m · 4.8★
Experience hints
Pair your visit. After Onion 2 Restaurant, round out your day in Koh Samui with contrasting stops nearby.
Reviews from Google
⭐️⭐️⭐️⭐️⭐️ This is truly the best of the best restaurant in Koh Samui! Since 2022, every time I visit the island, I make sure to come here 2–3 times. The whole menu is excellent, and today I enjoyed a perfectly cooked lobster. Everything is always fresh, flavorful, and beautifully prepared. I highly recommend — don’t visit Samui without eating here! …. And i come again to try the steak it was delicious as its our last night here nothing can beat this restaurant ✨✨✨✨✨
We tried the food here looking at reviews online and the menu for vegetarian options. The service was excellent by Niko who also paid special attention to our taste and all our requests. I highly recommend this restaurant. Has a fun vibe and the prices are reasonable. We had chicken pineapple fried rice, veg spring roll, and cheese toast.
Excellent value, excellent seafood. Thanks Nico and the entire team for being so passionate. One of the girls was so kind to clean us all the crabs. Red snapper and tiger prawns were amazing. Everything is fresh and grilled to perfection. Definetely visiting again soon.
A sample of visitor reviews from Google. Read all 1,780 reviews on Google.
Chaweng Beach Rd, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand
Open in Google MapsMore restaurants & food nearby
All within a 2-minute walk of Onion 2 Restaurant.
Samui Cuisine
Olive Restaurant
Red Fish Restaurant Koh Samui
Wok & Pan Koh Samui
Tips for Visiting Restaurants & Food
Follow the Crowds
The busiest street stalls are almost always the best — high turnover means fresh ingredients and a recipe that locals vouch for. An empty restaurant at dinner time is a red flag.
Ice Is Safe
Factory-made tube or cylinder ice (used in virtually all restaurants and stalls) is made from purified water and is safe to consume. You don't need to skip the iced Thai tea.
Use Grab for Delivery
The Grab app works for food delivery across Thailand, letting you order from street stalls and restaurants alike. It's invaluable on rainy days or when you want to eat in your hotel.
Onion 2 Restaurant: Frequently Asked Questions
Is Onion 2 Restaurant worth visiting?
Onion 2 Restaurant holds a 4.8★ rating from 1,780 Google reviews, placing it among the highest-rated restaurants & food in Koh Samui.
What are the opening hours of Onion 2 Restaurant?
Onion 2 Restaurant is typically open 11:00–02:00 — see the full day-by-day schedule in the location info on this page. Hours can change on Thai public holidays, so check ahead for holiday visits.
When is the best time to visit Onion 2 Restaurant?
The best months to visit Koh Samui are January – September, with the most reliable weather. Crowds peak in July – August & December — going early in the day usually means fewer people. Months to think twice about: October – December (Gulf Coast monsoon).
Where is Onion 2 Restaurant located?
Onion 2 Restaurant is at Chaweng Beach Rd, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand, in Koh Samui. Getting around Koh Samui: Songthaews (fixed routes around the ring road); Motorbike or scooter rental.
Also popular in Koh Samui
Elephant Jungle Sanctuary Samui (Soi 1 Branch)
Lamai Fresh Food Market
Elephant Beach Club
Big Buddha Temple (Wat Phra Yai)
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