Samui Regatta — Chaweng's Late-May Sailing Week (2026/27 Dates)

What Is the Samui Regatta?

The Samui Regatta is Koh Samui’s annual keelboat sailing competition, based at Chaweng Beach and run over a week in late May by organizer Regattas Asia. Racing yachts compete across several days offshore from Chaweng, supported by the Tourism Authority of Thailand and World Sailing, with a prize-giving and social program running alongside the racing on shore. It is the island’s biggest sailing event and one of only a handful of fixed annual events on Koh Samui’s calendar, alongside Songkran in April and Koh Phangan’s monthly Full Moon Party.

Key takeaways

• Annual keelboat regatta at Chaweng Beach, organized by Regattas Asia, in late May
• 2026 edition ran 23-30 May 2026; 2027 dates were provisionally listed as 22-29 May 2027 — confirm on samuiregatta.com before booking
• Racing is visible from Chaweng Beach and nearby headlands at no cost
• Chaweng hotel rates rise for regatta week even though late May sits in low season overall
• Late May’s warm 30°C sea and generally calm east coast make it a workable window for sailing, alongside a real chance of afternoon rain

When Is the Samui Regatta?

The Samui Regatta’s dates move slightly each year but consistently fall in late May, giving organizers a fixed window before the southwest monsoon builds through June. As of this guide’s last verification (Sep 2026), the confirmed 2026 edition ran 23-30 May 2026, and the event’s own site listed 22-29 May 2027 as the next edition’s dates.

Because regattas can shift by a few days year to year around sponsor and tide schedules, treat any date beyond the current year as provisional. Check samuiregatta.com directly before locking in flights or a villa, and see this site’s when to book guide for how far ahead Koh Samui accommodation generally needs booking.

Who Competes and What Boats Race

Keelboats — fixed-keel racing yachts, distinct from the catamarans and longtails used for day-trip charters — make up the Samui Regatta fleet, entered by owners and sailing clubs from Thailand and across Southeast Asia. Past fleets listed on the event’s own site have included named yachts such as Team Hollywood, Alive, Aftershock and Iolanthe, competing across multiple days of scored races run offshore from Chaweng.

Entrants range from serious campaign boats chasing overall silverware to more relaxed corporate and club teams sailing for the social side of the week. Host sponsors have included Chaweng properties Nora Buri Resort and Fair House Samui, both a short walk from the race village and prize-giving venue.

Where to Watch the Racing from Shore

Chaweng Beach itself is the simplest vantage point, since the race course typically runs in the water directly offshore where the fleet is visible with the naked eye once racing starts each morning. No ticket or entry fee is needed to watch from the sand, a beachfront bar, or a hotel pool deck along the Chaweng strip.

For a closer look, spectator boats sometimes run out to the course during race days — ask at the beachfront kiosks that also arrange the boat charters and sunset cruises covered elsewhere on this site, since availability depends on the year’s program. Binoculars help pick out individual boats once the fleet spreads out on longer legs.

The Shoreside Parties and Social Scene

Regatta week runs on a social program as much as a racing one, with a prize-giving and evening events typically hosted at the sponsoring beachfront hotels along Chaweng. Expect a mix of sailors, sponsors and local expats filling the bars and restaurants closest to the race village each evening, a livelier week than Chaweng’s usual late-May quiet.

Visitors don’t need a regatta connection to join the atmosphere — the beachfront bars and restaurants that hosted parties in past editions stay open to walk-in guests, and the closing awards night is generally the busiest evening of the week for anyone just after the vibe rather than a spot on a boat.

How to Get on the Water — as Crew or a Guest

Getting a berth as crew usually comes down to knowing an owner or team already entered, since keelboat crews are typically filled from established sailing club and expat networks rather than open sign-up; contacting the organizer or a Thailand-based sailing club ahead of the event is the realistic route for anyone serious about racing. Sailing experience helps, but some boats do carry non-racing guests for a day sail alongside the fleet.

Spectators without a racing connection have an easier option: book a private sunset or day charter for regatta week itself through one of the operators in the boat charters and sunset cruises guide, several of which follow the fleet from a respectful distance when demand is there. That route guarantees a seat on the water without needing a place on a race boat.

What Regatta Week Does to Chaweng Hotel Prices

Regatta week is the one predictable price spike inside Koh Samui’s otherwise cheap late-May low season, concentrated on Chaweng-area hotels closest to the race village and host sponsors. Rooms that would otherwise run 10-25% below baseline in the May-to-June window, per this site’s when to book guide, instead see rates firm up or sell out for the regatta’s exact dates, especially at the beachfront properties hosting sponsor events.

The practical fix is simple: book Chaweng well ahead if the regatta dates overlap a planned trip, or shift a few days either side of the event, or base in Lamai or another beach entirely to keep the full low-season discount. Travelers not specifically chasing the regatta atmosphere are better off avoiding the exact week.

Weather and Sea Conditions for Late May Sailing

Late May sits at the tail of Koh Samui’s hot season, with average highs around 32.9°C and a sea temperature holding at a warm 30°C, per this site’s May weather guide. Racing conditions benefit from the east coast staying the calmer side of the island through this stretch — Chaweng is rated “calm” into the shoulder of the southwest monsoon per the sea conditions by month guide, while the south and west coasts start picking up afternoon chop first.

The trade-off is rain: May averages 130 mm across 11 rain days as the southwest monsoon begins arriving, typically as a short, intense afternoon shower rather than an all-day washout. Race committees generally build a weather contingency into the schedule, but spectators and sailors alike should expect at least one interrupted afternoon across the week.

Planning a Trip Around the Samui Regatta

Anyone building a trip around the Samui Regatta should treat it as one highlight inside a broader late-May visit rather than the whole itinerary — pair it with other things to do in Koh Samui for the rest of the week, since racing typically fills only part of each day. Confirm the current year’s exact dates on the official site first, since they shift by roughly a week either side of late May.

Book Chaweng accommodation as early as regatta dates are confirmed if staying close to the action matters, or plan around the event if the goal is simply cheap late-May rates. Either way, the when to book guide and May weather guide cover the wider planning window this event sits inside.

FAQ

When is the Samui Regatta in 2027?

The official Samui Regatta site provisionally listed 22-29 May 2027 as of September 2026, following the confirmed 2026 edition’s 23-30 May dates. Regatta dates can shift by several days between years, so confirm the final schedule on samuiregatta.com before booking flights or a Chaweng hotel around it.

What boats race in the Samui Regatta?

The Samui Regatta is a keelboat regatta — fixed-keel racing yachts entered by owners and sailing clubs, not the catamarans or longtails used for day-trip charters. Past fleets have included named yachts such as Team Hollywood, Alive, Aftershock and Iolanthe, racing across several days of scored offshore races run from Chaweng Beach.

Can I watch the Samui Regatta for free?

Yes. Chaweng Beach itself is the main vantage point, since the race course typically runs in the water directly offshore and is visible from the sand, a beachfront bar or a hotel pool deck at no cost. No ticket is needed for shore viewing; closer looks depend on booking a spectator or charter boat for the day.

How do I get on a boat during the Samui Regatta?

Racing crew spots are usually filled through existing sailing club and owner networks, so contacting the organizer or a Thailand-based sailing club ahead of the event is the realistic route for racing. Spectators without a racing connection can instead book a private sunset or day charter through a local operator to follow the fleet from the water.

Do hotel prices go up during Samui Regatta week?

Yes, at Chaweng hotels near the race village and host sponsors specifically. Rates that would otherwise sit 10-25% below baseline in the late-May low season often firm up or sell out for the regatta’s exact dates, so booking early or basing elsewhere on the island keeps the full low-season discount.

Is late May a good time to sail in Koh Samui?

Generally yes. The sea holds at a warm 30°C and Chaweng’s east coast stays the calmer side of the island as the southwest monsoon builds, but May also averages 130 mm of rain over 11 days, usually as a short afternoon shower rather than an all-day washout — a real factor race committees plan around.