Sihanoukville in September (2026)
Verdict: Go with caveats
September is an okay time to visit Sihanoukville, with some trade-offs. Warm, wettest month, temperatures around 29°C/24°C. The upside: low prices and low crowds.
Weather
29°C/24°C · Warm, wettest month
Crowds
Low
Daily budget
₹3,000–₹10,300/day
Temperature
29°C/24°C
Weather
Warm, wettest month
Crowds
Low
Prices
Low
September vs the best time to visit Sihanoukville
The best months to visit Sihanoukville are December, January, February, March. September sits outside peak season, which often means better value and thinner crowds.
See the full month-by-month guide →Things to do in Sihanoukville in September
Koh Rong
Cambodia's most popular island, with long white beaches, beach bars, and bioluminescent plankton visible at night.
Koh Rong Sanloem
A quieter, more laid-back neighbour to Koh Rong, known for calmer water and slower island life.
Otres Beach
The mainland's most relaxed beach strip, lined with low-key beach bars and boutique guesthouses.
Serendipity Pier
A wooden pier stretching into the bay, a popular sunset and photo spot near the main beach strip.
Ream National Park
A coastal park of mangroves, rainforest, and beaches, explored by boat along the river and coastline.
Island Snorkelling
Boat trips from Sihanoukville to reef patches around the nearby islands for snorkelling and swimming.
Sihanoukville in September — FAQs
Is September a good time to visit Sihanoukville?
September is an okay time to visit Sihanoukville, with some trade-offs. Warm, wettest month, temperatures around 29°C/24°C. The upside: low prices and low crowds.
Is Sihanoukville expensive in September?
September is a low-price month in Sihanoukville, with low crowds and daily costs around ₹3,000–₹10,300/day per person. The best-value strategy: take advantage of off-peak rates on stays and activities.
What should I pack for Sihanoukville in September?
Pack for temperatures around 29°C/24°C. Light layers work well, with something warmer for evenings. Heaviest rainfall of the year
Full Travel Guide
Planning a Sihanoukville trip in September?
Things to do, where to stay, budgets and local tips — all free.