The perfect months to be in Cambodia are December and January, when the humidity is tolerable, temperatures are cooler and it's not likely to rain. From early February temperatures start to increase until the killer month of April, when temperatures often surpass 40°C (104°F). In May and June, the southwestern monsoon brings rain and elevated humidity. The wet season is from mid-May through October, despite the fact that this time of year is extremely soggy, it can be a decent time to visit Angkor, and this is the time when the moats will be full and the foliage abundant. Except avoid the northeast regions during those months, as this is the time when the tracks are waterlogged. The country's largest festival, Bon Om Tuk, is held in early November, and is well worth catching.
HOLIDAYS
January - New Year's Day
January - Commemoration of the fall of the Khmer Rouge*
February - Meak Bochea Day
March - Women's Day
April - Cambodian New Year
May - Labour Day
May - Visaka Buja Day (Birth of Buddha)
May - Royal Ploughing Day Ceremony
May - King Sihamoni's Birthday
June - International Children's Day
June - Former Queen's Birthday
September - Constitution and Coronation Day
September / October - Pchum Ben Day
October - Paris Peace Agreements on Cambodia
October - Former King Sihanouk's Birthday
November - Water Festival
November - Independence Day
December - UN Human Rights Day
*Probably no longer valid since the Paris Agreements.
**Buddhist
#Only this one is listed as a holiday by the embassy in Japan
¤ celebrated only by ethnic Chinese and Vietnamese
