Best Time to Visit

Morning is best — visit early, ideally between 7-9 am, for calmer water, fewer crowds, better snorkelling visibility, and cooler temperatures. Early risers may also catch a striking sunrise over the bay.
Late afternoon is the second-best window — the beach's granite boulders and coconut trees throw shade earlier than most other Samui beaches, so afternoons here stay comfortable even as other beaches bake in direct sun. It's quietest again after 5 pm.
Avoid midday during peak season (December-April) when crowds build up, since it's one of the island's most popular beaches despite its size.
Season: December to April is Koh Samui's dry season overall — sunniest skies and calmest seas for a beach day.

Time Needed
A half-day (2-4 hours) is the typical visit — enough time for a swim, some snorkelling, and lunch at one of the beachfront cafés. It pairs well as a stop on a broader east-coast day out (often combined with Fisherman's Village or Big Buddha).
Experiences

Swimming — calm, shallow, gently sloping water makes it safe and comfortable for most swimmers, including families with children.
Snorkelling — one of Koh Samui's best snorkelling spots right off the beach; rocky areas on both sides of the bay hold coral patches and tropical fish like parrotfish and angelfish. Worth bringing your own gear, as rental options nearby are limited.
Beachfront dining — cafés and small restaurants along the sand serve fresh seafood and tropical drinks with sea views.
Photography — the granite boulders, palm trees, and turquoise water make for some of the island's best sunset and beach photos.
Relaxation — sunbeds and umbrellas are available to rent from beachside resorts for a low daily fee.

Practical Details

Location: East coast, between Chaweng and Lamai — about 15 minutes from Chaweng, 10 minutes from Lamai, roughly 20 minutes (10 km) from Koh Samui Airport.
Access: Fully public beach, though the entrance path runs through resort areas — don't let that put guests off, it's free to enter.
Getting there: Scooter, taxi, or as part of an organized island tour; there's a designated parking area for scooters.
Facilities: No public toilets or showers — guests can use facilities at beachside bars/restaurants if they buy something.
Good to know: The rocky edges near the snorkelling spots can be slippery — water shoes are a good idea. Also worth carrying cash, as some small vendors don't accept cards.