Great Circle Distance between Heathrow and Siem Reap International Airport is 6,091 miles. Siem Reap's IATA airport code is REP.
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Climate:
The Cambodian climate is tropical, hot all year round, with a rainy season from May to mid-November. The coolest month is December, while the hottest months are April and May, when the heat becomes oppressive. In the rainy season, the temperature is a bit lower, but the humidity is higher, so the weather is hot and muggy. The amount of sunshine in Cambodia is good from December to February, but also in March and April. The country is not large so the climate is fairly uniform.