Weekly note

Best time to visit Sihanoukville

Cambodia · Southeast Asia

All twelve months scored on daily temperature, rainfall, humidity and holiday crowding.

The year in Sihanoukville

Tap a month for its page

  1. Sihanoukville in January: good, busy
  2. Sihanoukville in February: sweet spot, busy
  3. Sihanoukville in March: sweet spot
  4. Sihanoukville in April: ok
  5. Sihanoukville in May: avoid
  6. Sihanoukville in June: avoid
  7. Sihanoukville in July: avoid
  8. Sihanoukville in August: avoid
  9. Sihanoukville in September: avoid
  10. Sihanoukville in October: avoid
  11. Sihanoukville in November: ok
  12. Sihanoukville in December: sweet spot
  • Sweet spot
  • Good
  • OK
  • Avoid
  • Busy
Go in Feb, Mar or Dec — these months score within a whisker of each other; 31C max, 5 rainy days. Jan is the next best.

Dry season: Dec–Mar, 6 or fewer rainy days a month.

Month by month

No fare history for this route yet, so this ranking is climate and crowds only — the price column will fill in as the scanner collects.

MonthMax °CRain days HumiditySun h/day VerdictWhy
Jan 30° 4d 77% 10.5h goodbusy busier than usual
Feb 30° 3d 79% 10.8h sweet spot busy busier than usual
Mar 31° 5d 80% 11.2h sweet spot 31C max, 5 rainy days
Apr 31° 9d 81% 11.2h ok 31C max, 9 rainy days
May 31° 19d 85% 9.5h avoid monsoon: 19 rainy days, 293mm
Jun 30° 21d 85% 8.2h avoid monsoon: 21 rainy days, 377mm
Jul 29° 25d 87% 7.2h avoid monsoon: 25 rainy days, 550mm
Aug 29° 24d 86% 8.1h avoid monsoon: 24 rainy days, 436mm
Sep 29° 24d 88% 7.0h avoid monsoon: 24 rainy days, 509mm
Oct 29° 22d 88% 8.5h avoid monsoon: 22 rainy days, 394mm
Nov 30° 11d 82% 9.7h ok 30C max, 11 rainy days
Dec 30° 5d 75% 10.2h sweet spot 30C max, 5 rainy days

Rain days are the days with at least 1 mm of rain, as a weather station counts them.

Weather read at Otres and Serendipity beaches, 16 km from the airport (KOS): ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.

A busy month is a crowded one, not a bad one — usually it is crowded because the weather is good. It is flagged rather than scored down, and crowds alone never make a month “avoid”: that is reserved for weather worth skipping.

How busy it gets

Busiest in January and February; quietest in June, September and October.

Then and now

Sihanoukville's November days now average 30.3°C, 1.6°C warmer than in 1981–1990. 10 of 12 months are clearly warmer.

JanFebMarAprMayJunJulAugSepOctNovDec
1981–9029.1°29.6°30.6°30.9°29.6°28.5°28.3°27.9°28.0°28.3°28.7°29.1°
2017–2629.9°30.4°31.0°31.4°30.7°29.6°28.9°29.0°28.7°29.4°30.3°30.5°
Change+0.8°+0.8°+0.4°+0.4°+1.0°+1.0°+0.6°+1.0°+0.7°+1.2°+1.6°+1.4°

The average daily high, month by month, for the nearest ERA5 grid cell. Bold is a clear change; grey is within the ordinary spread between years. Every destination, ranked.

Getting there

How far Sihanoukville is, and what it costs, depends on where you set off from — the months above do not.

Before you go

Type A and C and G plugs at 230 V. Drives on the right. The currency is the Riel. UK Foreign Office: avoid all but essential travel to parts. Everything for Cambodia: cost of living, languages, emergency numbers and health.

Being there

On arrival

  • Paying — US dollars and riel are both used, and change often comes in riel; dollar coins are not taken. Only upmarket places, supermarkets, restaurants and hotels take cards, usually with a 3% surcharge. Or use the National Bank's Bakong Tourists app: link a Visa card or Mastercard, top it up and scan the KHQR codes that shops show.
  • UPI, for visitors from India — Works at KHQR merchants across Cambodia, from restaurants and shops to tourist sites: scan the KHQR code with your UPI app.

Getting around Sihanoukville

  • Apps — Rides: Grab. Maps: Google Maps. Grab books cars as well as tuk-tuks and remorques, the last two at a fixed fare set upfront; with a tuk-tuk hailed in the street, agree the fare before you get in.

Distances between the beaches are too long to walk comfortably, but getting around is easy, as the roads are wide and bike taxis (motodop) are everywhere. More on Wikivoyage

From the Wikivoyage article on Sihanoukville, written by travellers and licensed CC BY-SA 4.0.

Help

  • Emergency — police 117 · ambulance 119 · fire 118. In Siem Reap, the tourist police office is next to the ticket booth for the Angkor temples.
    TravelCharika is not an emergency service: we cannot call for help or send anyone. Numbers can change; if one fails, ask someone local or your hotel.

Put together by hand from the sources listed, checked 7 October 2026. Apps, cards and rules change, so check before you rely on one.

Sources (17)

Sihanoukville in pictures

What Sihanoukville is like

Sihanoukville (Krong Preah Seihanu; ក្រុងព្រះសីហនុ), formerly Kompong Som, is a seaside port city in Cambodia. This formerly laid-back beach destination has been transformed by Chinese investment and is now basically a giant construction site for Chinese resorts and casinos. More on Wikivoyage

Worth seeing
The town doesn't offer much to see. The main areas of Sihanoukville of interest to tourists are Serendipity Beach, Otres Beach, Victory Beach, and the various islands off the coast. More on Wikivoyage
Worth doing
The Cambodian Children's Painting Project (CCPP) (On Serendipity Beach Rd). An NGO which works with impoverished Cambodian children. More on Wikivoyage
Getting in
Sihanouk International Airport (KOS IATA Sihanoukville Airport) (17 km east of the town, on the edge of Ream National Park). The airport is extremely small, unprepared for the influx of Chinese investments (and people). More on Wikivoyage
Staying safe
Cambodia National Police. Women should not carry purses containing anything valuable, and if possible should not carry any purse at all. More on Wikivoyage
Staying healthy
Medical services in Sihanoukville are very limited and basic. The best medical service is offered by the CT Clinic or Sihanoukville International Clinic. More on Wikivoyage

From the Wikivoyage article on Sihanoukville, written by travellers and licensed CC BY-SA 4.0; the full article has far more. The numbers above are measured; this is experience.

Around Sihanoukville

Also in Cambodia

Nearby

Kind of place

Sihanoukville is in Cambodia, Southeast Asia. Distances are great-circle, so a short one can still be a long way round.

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