Phnom Penh Weather in May
May in Phnom Penh brings extremely high temperatures around 36°C (97°F) during the day, dropping to 27°C (81°F) at night, with quite a bit of rainfall expected, averaging around 157 mm (6.2 in) for the month.
Rainfall in Phnom Penh in May
Past climate data indicates that roughly 15 days will see rain, totalling around 157 mm (6.2 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Phnom Penh in May
In May, expect extremely high temperatures in Phnom Penh, with highs of 36°C (97°F) and lows of 27°C (81°F) at night. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Phnom Penh in May
Expect a lot of sunshine this month, with about 203 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Phnom Penh in May
Average wind conditions reach 2 m/s (4 knots) in May. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.May in Phnom Penh has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Phnom Penh's climate page.
Phnom Penh Temperature in May
Min Temperature
27°C (81°F)
Max Temperature
36°C (97°F)
Chance of Rain
49%
Precipitation
157 mm (6.2 in)
Rainy days
15 days
Humidity
77%
Windspeed
2 m/s (4 knots)
Sunshine
203 hours
Percentage Sunshine
Historical weather for Phnom Penh in May
Browse day-by-day weather records for Phnom Penh spanning 38 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Phnom Penh historical weather extremes in May
According to our 24 years of weather records for Phnom Penh, the following extremes were recorded between 2002 and 2026.
- The warmest day in May was on May 1, 2024, with a maximum of 41°C (106°F).
- The coldest May day was on May 11, 2003, with a maximum of 26°C (79°F).
- Phnom Penh registered its coldest May night on May 24, 2021, with temperatures dropping to 23°C (73°F).
Best Places in Cambodia in May
Find out more about the weather in Cambodia and which places have the best travel conditions in this month. See all of Cambodia in May →
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What to Wear in Phnom Penh in May
Hot weather in May means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Phnom Penh in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Phnom Penh's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Phnom Penh climate overview or explore weather in Cambodia.
