May weather forecast
Cambodia

May in Cambodia marks the onset of the Southwest Monsoon, bringing the commencement of the wet season. During this month, the weather becomes notably more humid, with daily temperatures ranging from 25°C to 34°C. Despite the start of the monsoon, the heat from the previous month persists, albeit with the humidity making the climate feel warmer.

In Phnom Penh, the temperatures hover around an average high of 34°C, while in Siem Reap, temperatures can reach up to 33°C. The coastal city of Sihanoukville experiences temperatures between 26°C to 33°C, offering a slightly cooler respite due to its proximity to the sea.

Rainfall in May sees a significant increase compared to April, averaging 150mm for the entire month. This rainfall is generally more frequent and intense, occurring mainly in the afternoons and evenings. The rains, though they mark the start of the monsoon, offer a refreshing contrast to the heat of the day.

Compared to April, May experiences a decrease in temperature but a marked increase in humidity and rainfall. As the country transitions into June, rainfall intensifies significantly, marking the full onset of the wet season. Despite the start of the monsoon, May still provides opportunities for visitors, especially those who can adapt to the humid climate and the afternoon showers. The landscape begins to turn lush and vibrant, offering a different yet equally mesmerizing aspect of Cambodia's natural beauty.

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• Phnom Penh - May »
  On the last day of the month, in Phnom Penh, sunrise is at 05:35 and sunset at 18:20 +07. In Phnom Penh, during May, the rain falls for 16.4 days and regularly aggregates up to 112mm of precipitation.
• Kampot - May »
  With an average sea temperature of 30.5°C, May is the month with the warmest seawater in Kampot. In May, on the first day of the month, sunrise is at 05:45 and sunset at 18:15.
• Banlung - May »
  In Banlung, Cambodia, in May, during 16 rainfall days, 178mm of precipitation is typically accumulated. In Banlung, in May, during 16 rainfall days, 178mm of precipitation is typically accumulated.
• Kep - May »
  Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity.
• Paôy Pêt - May »
  On the first day of May in Paôy Pêt sunrise is at 05:48 and sunset at 18:25. January through June, August through November, with an average maximum UV index of 7, are months with the highest UV index in Paôy Pêt.
• Pailin - May »
  The months with the highest UV index in Pailin are January through December, with an average maximum UV index of 7. On the last day of the month, in Pailin, sunrise is at 05:42 and sunset at 18:31 +07.
• Krong Siem Reap - May »
  In Krong Siem Reap, in May, during 15 rainfall days, 146mm of precipitation is typically accumulated. In Krong Siem Reap, in May, during 15 rainfall days, 146mm of precipitation is typically accumulated.
• Krong Preah Sihanouk - May »
  On the last day of the month, in Krong Preah Sihanouk, sunrise is at 05:42 and sunset at 18:24 +07. In Krong Preah Sihanouk during May, the rain falls for 17 days and regularly aggregates up to 207mm of precipitation.
• Memot - May »
  On the last day of the month, in Memot, sunrise is at 05:29 and sunset at 18:15 +07. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air.