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 (77°F) to 34°C (93.2°F). 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 (93.2°F), while in Siem Reap, temperatures can reach up to 33°C (91.4°F). The coastal city of Sihanoukville experiences temperatures between 26°C (78.8°F) to 33°C (91.4°F), offering a slightly cooler respite due to its proximity to the sea.

Rainfall in May sees a significant increase compared to April, averaging 150mm (5.91") 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 »
  In Phnom Penh during May, the rain falls for 16.4 days and regularly aggregates up to 112mm (4.41") of precipitation. In Phnom Penh during the entire year, the rain falls for 153.4 days and collects up to 1636mm (64.41") of precipitation.
• Kampot - May »
  With an average sea temperature of 30.5°C (86.9°F), May is the month with the warmest seawater in Kampot. May is the month with the warmest seawater in Kampot, with an average sea temperature of 30.5°C (86.9°F).
• Banlung - May »
  On the last day of the month, in Banlung, sunrise is at 05:23 and sunset at 18:15 +07. In Banlung during May, the rain falls for 16 days and regularly aggregates up to 178mm (7.01") of precipitation.
• Kep - May »
  Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity.
• Paôy Pêt - May »
  On the last day of the month, in Paôy Pêt, Cambodia, sunrise is at 05:41 and sunset at 18:33 +07. In Paôy Pêt, during May, the rain falls for 24.2 days and regularly aggregates up to 97mm (3.82") of precipitation.
• Pailin - May »
  On the last day of the month, in Pailin sunrise is at 05:42 and sunset at 18:31 +07. The months with the highest UV index in Pailin are January through December, with an average maximum UV index of 7.
• Krong Siem Reap - May »
  On the last day of the month, in Krong Siem Reap, sunrise is at 05:36 and sunset at 18:27 +07. In Krong Siem Reap, during the entire year, the rain falls for 121 days and collects up to 1357mm (53.43") of precipitation.
• Krong Preah Sihanouk - May »
  In Krong Preah Sihanouk during the entire year, the rain falls for 162 days and collects up to 2211mm (87.05") of precipitation. With an average sea temperature of 30.3°C (86.5°F), May is the month with the warmest seawater in Krong Preah Sihanouk.
• Memot - May »
  The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. On the last day of the month, in Memot, sunrise is at 05:29 and sunset at 18:15 +07.