Avg weather in December
11 Hrs per day
3 mm per month
71 % avg
8 Mph avg

Cambodia Weather in December

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What’s the weather like in Cambodia in December?

Cambodia is a beautiful Southeast Asian country with diverse landscapes from stunning coasts to vast countryside and ancient cities. In December the weather’s dry, sunny and warm, marking the start of the high season. The weather’s ideal for sightseeing, exploring and relaxing on the beach. If you visit Cambodia this month, make sure you’re careful in the strong sun by seeking shade, applying sun cream regularly and drinking plenty of water.


In December, the average temperature across Cambodia is a warm but comfortable 26°C. The capital Phnom Penh reaches average highs of 30°C in the peak of the day, and lows of 22°C. Further south on the coast, Sihanoukville is slightly cooler in the daytime with an average high of 29°C, but warmer at night with average lows of 23°C. The city of Siem Reap in the north has average highs of 30°C at this time of year, along with lows of 19°C after dark.

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