Our verdict
The best time to visit Phnom Penh is November-April
In the summer months, temperatures tend to get to a maximum of around 38℃ (100℉). In the colder months such as December, temperatures usually get down to an average minimum of 22℃ (72℉).
The days are longest in Phnom Penh in May, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. September sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in February instead.
Below you’ll find loads more detailed information about when to visit Phnom Penh, including a monthly climate breakdown, what to pack, and loads of tools and recommendations to help you find flights and accommodation to suit your budget.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Phnom Penh seasons
Before you continue, it’s important to know when the seasons are in Phnom Penh as they might be different to yours depending on where in the world you’re travelling from. Phnom Penh is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Phnom Penh
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Phnom Penh for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Phnom Penh climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Phnom Penh for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Phnom Penh in January
- Average temperature: 27℃ (80℉)
- Average high temperature: 32℃ (90℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 60%
- Average sunny days: 23 days
- Average rainfall: 14mm (1") over 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in January, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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Phnom Penh in February
- Average temperature: 29℃ (83℉)
- Average high temperature: 35℃ (94℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 56%
- Average sunny days: 22 days
- Average rainfall: 13mm (0") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in February, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in March
- Average temperature: 30℃ (87℉)
- Average high temperature: 36℃ (97℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 57%
- Average sunny days: 16 days
- Average rainfall: 36mm (1") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in March, make sure you pack t-shirts, shorts and sun protection.
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Phnom Penh in April
- Average temperature: 31℃ (87℉)
- Average high temperature: 35℃ (95℉)
- Average low temperature: 26℃ (80℉)
- Average humidity: 65%
- Average sunny days: 7 days
- Average rainfall: 124mm (5") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in April, make sure you pack t-shirts, shorts and sun protection.
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Phnom Penh in May
- Average temperature: 30℃ (86℉)
- Average high temperature: 35℃ (95℉)
- Average low temperature: 26℃ (80℉)
- Average humidity: 70%
- Average sunny days: 5 days
- Average rainfall: 112mm (4") over 26 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in May, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in June
- Average temperature: 29℃ (84℉)
- Average high temperature: 33℃ (92℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 75%
- Average sunny days: 4 days
- Average rainfall: 111mm (4") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in June, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in July
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (90℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 77%
- Average sunny days: 6 days
- Average rainfall: 85mm (3") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in August
- Average temperature: 28℃ (83℉)
- Average high temperature: 33℃ (91℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 76%
- Average sunny days: 6 days
- Average rainfall: 118mm (5") over 25 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in September
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 79%
- Average sunny days: 2 days
- Average rainfall: 174mm (7") over 28 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.
Phnom Penh in October
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 79%
- Average sunny days: 3 days
- Average rainfall: 171mm (7") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in October, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in November
- Average temperature: 27℃ (81℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 24℃ (74℉)
- Average humidity: 77%
- Average sunny days: 8 days
- Average rainfall: 75mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in November, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Phnom Penh in December
- Average temperature: 26℃ (79℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 69%
- Average sunny days: 21 days
- Average rainfall: 30mm (1") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Phnom Penh in December, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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