If you plan to visit Phnom Penh in May, the weather is typically alright, with an average high temperature of +95°F during the day and approximately 0 sunny days. Expect some rainy, though, as there are typically 23 rainy days in the month and around 147 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+95°F
Avg. max. temperature
+75°F
Min.
+104°F
Max.
147 mm
Total precipitation
75%
Avg. humidity
1 m/s
Avg. wind
0 ☀️
Sunny Days
2 ⛅️
Cloudy
23 🌦
Rainy
Our opinion: Phnom Penh has OK weather in May.
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Average temperature in Phnom Penh in May
Here are the expected maximum, average and minimum temperatures in Phnom Penh for May based on the historical data.
Last Year
Historical Data
Going from a maximum of +104°F during the day to a minimum of +79°F during the night, the temperature in May averages around +97°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +95°F to +95°F.
Is Phnom Penh warm or cold in May?
Phnom Penh is typically hot in May.
Maximum temperatures go down compared to the previous month from +97°F to +95°F. The minimum temperature also goes up from +81°F to +81°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
May is one of the warmest months in Phnom Penh, here is the comparison with other months:
Climate in Phnom Penh in May
Phnom Penh weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+97°F
+95°F
+91°F
Min. temperature
+72°F
+75°F
+73°F
Max. temperature
+104°F
+104°F
+102°F
Rainfall
89 mm
147 mm
142 mm
Wind
1 m/s
1 m/s
2 m/s
Humidity
70%
75%
76%
Air pressure
1008 HPa
1007 HPa
1006 HPa
Sunny days
2
0
0
Cloudy days
6
2
2
Rainy days
19
23
23
Snowy days
0
0
0
May weather is still as ok as in April.It’s getting colder in May. From +97°F in the day, the average maximum temperature lowers to +95°F.Prepare for more rain. Average rainfall goes from 89 mm to 147 mm.Humidity rises from 70% to 75%.The average wind speed doesn’t change much during May, staying around 1 m/s.The days becoming less sunny, going from 2 sunny days in April to 0 in May.
Wind speed in Phnom Penh in May based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Phnom Penh is gradually increasing during May, going from 1 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during May in Phnom Penh based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in May, with total rainfall of approximately 124 mm. The maximum amount of rainfall per day is around 14 mm, which is considered light rain.May is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Phnom Penh wettest month is October, where a typical day has a 74% chance of precipitation and 242 mm of rainfall per day. February, on the other hand, is the driest month with a mere 17% chance of precipitation and 12 mm of rainfall per day.
How was the weather last May in Phnom Penh?
This is the weather in Phnom Penh in May 2023:
1 May
☁️
+95°F
2 May
☁️
+98°F
3 May
☁️
+98°F
4 May
☁️
+98°F
5 May
☁️
+100°F
6 May
☁️
+103°F
7 May
☁️
+101°F
8 May
☁️
+100°F
9 May
☁️
+92°F
10 May
🌧️
+95°F
11 May
☁️
+95°F
12 May
🌧️
+88°F
13 May
☁️
+94°F
14 May
☁️
+95°F
15 May
☁️
+98°F
16 May
☁️
+99°F
17 May
☁️
+101°F
18 May
☁️
+99°F
19 May
☁️
+100°F
20 May
☀️
+101°F
21 May
☁️
+96°F
22 May
☁️
+95°F
23 May
☁️
+96°F
24 May
☁️
+95°F
25 May
☀️
+96°F
26 May
☁️
+97°F
27 May
☁️
+88°F
28 May
☁️
+87°F
29 May
☁️
+92°F
30 May
☁️
+95°F
31 May
☁️
+96°F
In May 2023 Phnom Penh had 2 sunny days, 27 cloudy days, and 2 rainy days. The average maximum temperature was +97°F, with an absolute maximum of +104°F and a minimum of +86°F. The average humidity was 77%, with a maximum of 100% and a minimum of 36%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in May?
Climate Change Over the Years
This is how Phnom Penh climate has changed over the last 43 years.
The climate in Phnom Penh in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1999 (+89°F) and the highest in 2015 (+94°F). The driest year was 2015 with only 964 mm of rainfall, and the wettest year was 2022 with 1761 mm.
FAQ
Frequently asked questions about the weather in Phnom Penh in May:
Is May a good time to visit Phnom Penh?
It’s always a good time to visit Phnom Penh, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Phnom Penh in May?
Absolutely, May is hot in Phnom Penh. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.
Is Phnom Penh rainy in May?
Phnom Penh is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Phnom Penh in May?
Usually, it’s not very sunny in Phnom Penh in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in Cambodia
Check out the weather for other cities in Cambodia.
For this page, we’ve looked at the typical weather in Phnom Penh, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
