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Aerial view of Sihanoukville, Cambodia, its high-rise skyline curving along a sandy beach and turquoise bay.

Cambodia

Preah Sihanouk, Cambodia — Towns & Travel Guide

Preah Sihanouk is a province of Cambodia on the Gulf of Thailand, named for its capital Sihanoukville, a deep water port on an elevated peninsula.

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Towns & cities in Preah Sihanouk

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Aerial view of Sihanoukville, Cambodia, its high-rise skyline curving along a sandy beach and turquoise bay.Cambodia

Sihanoukville

Sihanoukville is a city of southern Cambodia on the Gulf of Thailand, the country's main seaport and beach resort, the setting-off point for the islands…Where to stay →

About Preah Sihanouk

Sihanoukville is the reason to know Preah Sihanouk.

What is Preah Sihanouk known for?

The provincial capital stands on an elevated peninsula on the Gulf of Thailand and works as a deep water port city rather than as an inland administrative town, which is unusual among the provinces of Cambodia. Both names travel together. Preah Sihanouk is also written Sihanoukville Province, so the coast, the peninsula and the harbour answer to either form.

Where is Preah Sihanouk?

The Gulf of Thailand gives Preah Sihanouk its outline. The province occupies coast rather than interior, and the water is the boundary that matters most, since a maritime edge behaves differently from a line drawn between two provinces. Its capital sits on a peninsula.

Sihanoukville occupies elevated ground pushed out into the gulf, which is why the city reads as a headland town rather than as a settlement spread across a plain. The province is compact. It covers roughly two and a half thousand square kilometres, so the distance from the inland edge of Preah Sihanouk to the Gulf of Thailand is short, and the coast is a presence across the whole province rather than a strip at one end.

Depth of water matters here. Sihanoukville is described as a deep water port, a distinction that governs which vessels can call and therefore what the city does for the rest of Cambodia. The province is young on paper.

Preah Sihanouk dates from 2008, and both of the province's names, Preah Sihanouk and Sihanoukville, come from the port city on the peninsula rather than from any inland settlement. Its official name is ខេត្តព្រះសីហនុ. A tropical position places the province in the wet-and-dry belt of the northern hemisphere, with the Gulf of Thailand along its outer side.

What is Preah Sihanouk like?

Two names sit on the same province. Preah Sihanouk and Sihanoukville are both in use for it, the second belonging first to the capital and then, by extension, to the province wrapped around that capital. The Khmer form is ខេត្តព្រះសីហនុ.

Cambodian usage calls the unit a khaet, and Preah Sihanouk is one of them, which is why the province appears in some sources as Sihanoukville Province and in others under its own name. Port life runs through the place. A deep water harbour brings a different daily rhythm from the one an inland provincial seat keeps, and Sihanoukville's work is tied to what arrives and leaves by sea rather than to a hinterland alone.

The peninsula raises the city. Ground standing above the Gulf of Thailand gives the capital its shape, with the water on more than one side of it. The province itself is recent.

Preah Sihanouk was constituted in 2008, so its standing as an administrative body is newer than the harbour that gives it purpose, and the city on the peninsula is the older of the two things the name covers. The tropical year does the rest. Wet and dry halves order the calendar along this part of the Gulf of Thailand, as they do across the whole of Cambodia.

What is the history of Preah Sihanouk?

Preah Sihanouk dates from 2008. That makes the province a recent administrative creation, though the deep water port at Sihanoukville that gives it purpose was there before the boundary was drawn around it. The name came from the city.

Sihanoukville Province is the alternative form still in use, while the official Khmer title is written ខេត្តព្រះសីហនុ.

What is the climate of Preah Sihanouk?

The Gulf of Thailand is the agent here. Preah Sihanouk lies on the coast in the tropics, so its year divides into a wet half and a dry half, and the sea alongside is the feature that distinguishes conditions here from those of the inland provinces of Cambodia. Heat holds through both.

What alters is the water, in the air and on the ground, which is the thing worth planning a visit to Sihanoukville around.

How do you get to Preah Sihanouk?

Ships can reach it directly. Sihanoukville is a deep water port, which makes Preah Sihanouk one of the provinces of Cambodia approachable by sea as well as by road, and the Gulf of Thailand carries that traffic to the peninsula. The capital is the arrival point.

Roads into the province converge on the elevated ground the city occupies, so overland and maritime approaches come together in the same place.

Common questions

What is the best area to stay in Preah Sihanouk?

Sihanoukville: arrivals by sea and anyone wanting the port city itself.

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Updated August 2026