Lake-backed bay between two headlands with the clearest high-season water in the south; a yacht anchorage in the calm months.
Nai Harn · 700 m · Sauveteurs: Oui · November–April · Revision 5 sept. 2026
Nai Harn Beach is 700 m of sand in Nai Harn, open to the south-west monsoon, lifeguarded in daylight, reached by route free of charge. Best months to swim: November–April; rip-current risk from May to October: high. Good for swimming, children, surfing, snorkelling, sunset.
Nai Harn is the south's swimming bay and many residents' favourite beach on the island: seven hundred metres of pale sand with a moderate gradient between two forested headlands, a monastery at the northern end, a freshwater lake and casuarinas behind, and in the high season water clear enough to see your feet in chest depth and a fleet of yachts at anchor offshore. The northern end near the monastery is the quietest; the southern end has the loungers and vendors. From May to October it turns into a surf beach with a fast shore-break and rips that run out along the headlands — a good intermediate break, a bad beginner one on big days, and a red-flagged swim for much of the season with busy lifeguards. Ya Nui and Ao Sane, the small snorkelling coves either side, are five minutes away.
Source: phuket101 — Nai Harn Beach, south Phuket's best swim bay (5 sept. 2026) · Toutes les sources
| Mois | État de la mer | Jours agités | Mer °C | Meilleurs mois |
|---|---|---|---|---|
| Jan | calme | 0 | 28.8 | oui |
| Feb | calme | 0 | 29.1 | oui |
| Mar | calme | 0 | 29.8 | oui |
| Apr | calme | 0 | 30.7 | oui |
| May | légère houle | 4 | 31.0 | — |
| Jun | légère houle | 8 | 30.1 | — |
| Jul | agitée | 13 | 29.9 | — |
| Aug | agitée | 9 | 29.9 | — |
| Sep | agitée | 12 | 29.2 | — |
| Oct | calme | 2 | 29.5 | — |
| Nov | calme | 0 | 29.8 | oui |
| Dec | calme | 0 | 29.0 | oui |
Source: Open-Meteo (ERA5), 2015–2026 (island rough-sea days, 2015–2025, damped for a beach that is open to the south-west monsoon); Open-Meteo Marine API (sea-surface temperature, 2022-12–2026-08).
Median monthly mean, west-coast grid point, 2022-12–2026-08 · Open-Meteo Marine API
Island rough-sea days, median per calendar month, 2015–2025; the beach's best months in the figure colour · Open-Meteo (ERA5), 2015–2026
The table above applies the island's marine normals to this beach: median rough-sea days per calendar month from Open-Meteo (ERA5), 2015–2026 (2015–2025, marine fields from 2022), damped by the beach's shelter, and median sea-surface temperature from Open-Meteo Marine API (2022-12–2026-08). Calm months here: October–April. Some swell: May–June. Rough: July–September. The sea is 28.8–31.0 °C as monthly medians, warm in every month; temperature never decides a swim on Phuket, the sea state does. The best-months row is the beach's own calm season and is derived, not opinion.
Nai Harn Beach is open to the south-west monsoon, which decides its year. It takes the south-west swell directly, so it follows the island's marine normals exactly: a calm sea in October–April and rough-sea days in May–September, when red flags fly on rough days and the rip-current risk is high. Lifeguards patrol in daylight; a red flag means the sea is closed to swimming, and the guards will whistle swimmers out. Caught in a rip: float, swim parallel to the beach until the pull stops, then in. Phuket records around 30–40 drownings a year, most of them between May and October on the open west coast; the hospitals catalogue names the nearest 24-hour emergency room from Nai Harn, and the emergency number is 1669. Jellyfish drift in after storms on the whole coast; vinegar is the first aid.
Loungers at the southern end; restaurants on the lake road; casuarina shade behind the sand.
route · gratuit
Road to the beach past the lake; large car park.
$29 Taxi aéroport vers Nai Harn, par voiture, médiane de l’indice, septembre 2026 · n = 5
Hôtels à Nai HarnTransfert aéroport vers Nai HarnVivre à Nai Harn
Road to the beach past the lake; large car park. There is no entry fee. The beach is 0.4 km from the centre of Nai Harn as the site defines it. From the airport, the taxi-counter fare to Nai Harn was $29 per car as the index median in septembre 2026 (5 observations); the airport-transfer page compares taxi, ride-hailing, minivan and the Smart Bus for the area. 45 km separate the airport from Nai Harn by road. The nearest other beaches in this catalogue are Ao Sane Beach (0.9 km), Ya Nui Beach (1.3 km), Nui Beach (2.5 km), Rawai Beach (2.8 km).
Loungers at the southern end; restaurants on the lake road; casuarina shade behind the sand. Loungers, where present, are rented by the day from licensed operators in zones set after the 2014–2016 clean-ups. Natural shade exists behind the beach. Food and drink are available at or just behind the beach. Nearby in the things-to-do catalogue: Windmill Viewpoint (0.9 km), Promthep Cape (1.6 km). Hotels, villa rents and the cost of a day in Nai Harn are priced on the area page from the index.
In November–April, yes — the sea is calm on the island's marine normals. From May to October the rip-current risk is high: the beach takes the swell directly and flies red flags on rough days. Lifeguards are on duty in daylight. Red flag means no swimming; in an emergency call 1669.
November–April. The sea is calm here in October–April and rough in July–September, on the island's marine normals (Open-Meteo (ERA5), 2015–2026) applied to a beach that is open to the south-west monsoon. Sea temperature runs 28.8–31.0 °C through the year, so it is never the deciding factor. For surfing the answer is the opposite: May to October.
Road to the beach past the lake; large car park. Entry is free. The airport taxi to Nai Harn was $29 per car as the index median in septembre 2026; Nai Harn is 45 km from the airport by road.
Transats, Restauration, Toilettes, Douches, Stationnement, Ombre naturelle. Loungers at the southern end; restaurants on the lake road; casuarina shade behind the sand. Other beaches in Nai Harn: Ya Nui Beach, Ao Sane Beach.
Conciergerie
Villa, yacht, hélicoptère et excursions privées réunis en un seul programme, avec des références de prix datées et un seul interlocuteur.
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