Tucked into the far southern end of Sharp Island, Hap Mun Bay — known in English as Half Moon Bay — is widely regarded as one of the most beautiful swimming beaches in all of Sai Kung. Its perfect crescent of fine golden sand, framed by green headlands and lapped by unusually clear water, looks more like a tropical island cove than somewhere a short ferry from a Hong Kong town.
Why Hap Mun Bay stands out
Hong Kong has plenty of beaches, but few combine clean, clear water, soft fine sand and a genuine away-from-it-all feeling the way Hap Mun Bay does. Because it sits on an island rather than the mainland coast, the water here tends to be clearer than at roadside beaches, and the bay’s sheltered, curved shape keeps the swell gentle. The name “Half Moon Bay” describes the shape exactly: a smooth half-circle of sand wrapping around calm, shallow water that deepens slowly — ideal for paddling, floating and easy swimming.
The beach is gazetted and managed by the Leisure and Cultural Services Department (LCSD), which means it comes with proper facilities and, crucially, seasonal lifeguard cover. That official status is one of the main reasons families choose it over the wilder, unpatrolled beaches further out in the Sai Kung peninsula.
What to expect on the beach
For a small island cove, Hap Mun Bay is surprisingly well equipped. Typical facilities include:
- Seasonal lifeguards and a designated swimming zone marked by floats
- A shark-prevention net enclosing the swimming area
- Changing rooms, showers and toilets
- A barbecue area with pits set back from the sand
- Shaded seating and a small refreshment kiosk in peak season
- Litter bins and basic first-aid support during lifeguard hours
The sand itself is the headline attraction — fine, pale and clean, sloping gently into water that is calm enough for young children near the shore. Behind the beach, low wooded hills provide a green backdrop and a little natural shade in the late afternoon.
Swimming and the water
The swimming here is the main event. Inside the netted zone the water is clear and the bottom is sandy rather than rocky, so it is comfortable underfoot. Mornings are usually calmest; by mid-afternoon a light breeze can pick up, which is welcome on a hot day but worth noting if you have very small swimmers. Always swim within the flagged area and during lifeguard hours.
Barbecues and picnics
The barbecue area makes Hap Mun Bay a popular spot for a half-day outing rather than a quick dip. Bring your own food, charcoal and firelighters — supplies on the island are limited and prices at the kiosk reflect the boat journey. Pack everything out with you; the island has limited waste collection and keeping it pristine is part of its charm.
Getting there: the kaito ferry
Hap Mun Bay has no road access — like the rest of Sharp Island, it is reached only by boat. The simplest way is the licensed kaito (sampan) ferries that depart from the Sai Kung public pier. Walk along the waterfront and you will hear boatmen calling out “Hap Mun Bay” or “Half Moon Bay”; many run a combined service that also stops at the Sharp Island tombolo.
| Detail | Information |
|---|---|
| Departure point | Sai Kung public pier waterfront |
| Boat type | Licensed kaito / sampan |
| Crossing time | Roughly 15–20 minutes |
| Ticket | Round-trip, paid in cash to the boatman |
| Frequency | Frequent in summer; check the last return boat |
Pay cash, confirm the time of the last boat back before you set off, and keep your return ticket. For the full picture on ferries, buses and minibuses, see our getting around Sai Kung guide. To reach Sai Kung Town in the first place — there is no MTR station in Sai Kung — read getting to Sai Kung.
Best time to visit
The beach is at its best from late spring through early autumn, when the water is warm enough for comfortable swimming. Weekday mornings in June or September are the sweet spot: warm water, smaller crowds and easy boat tickets. Summer weekends and public holidays are popular, so go early to grab a good patch of sand and to be sure of a return boat. Winter is too cool for most swimmers, but the bay is still a lovely, quiet spot for a walk and a picnic.
Practical tips
- Bring cash for the boat — kaito operators do not take cards.
- Carry your own water and food. The kiosk is seasonal and limited.
- Pack out all rubbish. Help keep this island beach clean.
- Reef-safe sun protection, a hat and a rash vest go a long way; shade is limited at midday.
- Footwear: sandals you can get wet in are ideal for the sand and the boat.
- Check the tide and the last ferry — being stranded is the one real risk on an island beach.
Safety
As a gazetted beach, Hap Mun Bay is among the safer swimming choices in Sai Kung, but a few basics apply. Swim only within the netted, flagged zone and during lifeguard season. Keep an eye on children near the water’s edge, and respect any red-flag or no-swimming signals. This is very different from the unpatrolled surf beaches at Tai Long Wan, where rip currents make swimming genuinely dangerous — Hap Mun Bay is calm, enclosed and supervised, which is exactly why families love it.
Make a day of it
Hap Mun Bay pairs naturally with the rest of Sharp Island: time your visit so you can also walk the famous tombolo sandbar at low tide before settling on the beach. Another easy combination is to swim here in the morning and head to nearby Trio Beach or back to Sai Kung Town for a seafood lunch on the waterfront. With clear water, soft sand and a short, scenic boat ride, Half Moon Bay is the kind of place that turns a first-time visitor into a repeat one.
Frequently asked questions
How do I get to Hap Mun Bay?
Take a kaito (sampan) ferry from the Sai Kung public pier. Boatmen call out ‘Hap Mun Bay’ or ‘Half Moon Bay’ along the waterfront and sell round-trip tickets; the crossing takes roughly 15–20 minutes. See the getting around guide for details.
Is Hap Mun Bay safe for swimming with children?
Yes — it is a gazetted beach managed by the LCSD with seasonal lifeguards, a shark-prevention net and gently shelving fine sand, which makes it one of Sai Kung’s most family-friendly swimming beaches.
Are there toilets and a BBQ area?
Yes. The beach has changing rooms, showers, toilets and a barbecue area. There is a small kiosk in peak season, but bring your own water and snacks to be safe.
