Siem Reap (Angkor) weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Poor
Best time to visit: December – February
What is the weather like in Siem Reap (Angkor) in May?
In May, Siem Reap (Angkor) is hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 23 days, totalling 177 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Siem Reap (Angkor).
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 12 h 44 min05:39 – 18:23
- UV index
- 13 · extremeclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 13 km/haverage daily peak
- Cloud cover
- 81 %on average
- Hot days
- 29 days30 °C or more
- Time zone
- UTC+7Asia/Phnom_Penh
How the score comes together
- Temperatureweight 50 %30 %
- Sunshineweight 20 %65 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Siem Reap (Angkor) in May: quick answers
Is Siem Reap (Angkor) hot in May?
Yes. In May, Siem Reap (Angkor) is hot: daytime highs average 33 °C and nights stay around 27 °C. On about 29 days the thermometer climbs to 30 °C or more.
Does it rain much in Siem Reap (Angkor) in May?
It rains often – on about 23 days, adding up to 177 mm.
Siem Reap (Angkor) month by month
The whole year in Siem Reap (Angkor)All destinations: Cambodia
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)