Weather in Phnom Penh in May
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for May in Phnom Penh.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youPhnom Penh in May is very hot — daytime temperatures average 33.3°C, dropping to 26.2°C at night. The month is very wet, with around 24 rainy days, with roughly 10.0 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Phnom Penh — every month compared. Once you know when to go, find your Phnom Penh packing list at 247PackingList.
Get ready for Phnom Penh in May
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Search Flights →Lightweight travel clothing
Lightweight, breathable clothing and a compact travel umbrella are essential in this climate.
Check Price →What to pack for Phnom Penh in May
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Compare all months in Phnom Penh
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 30.9°C | 22.2mm | 10/10 |
| February | 32.4°C | 26.1mm | 10/10 |
| March | 34.2°C | 39.5mm | 10/10 |
| April | 33.6°C | 121.7mm | 9/10 |
| May | 33.3°C | 190.1mm | 9/10 |
| June | 32.9°C | 167.4mm | 9/10 |
| July | 31.8°C | 228.8mm | 8/10 |
| August | 32.3°C | 250.5mm | 8/10 |
| September | 30.8°C | 338.9mm | 8/10 |
| October | 30.2°C | 382.8mm | 8/10 |
| November | 30.3°C | 224.5mm | 8/10 |
| December | 30.2°C | 33.6mm | 10/10 |
Full month-by-month guide: best time to visit Phnom Penh →
For facts about Cambodia — currency, language and dialling code — see our Cambodia country guide at 247CountryInfo. Travellers also find it useful to keep a Phnom Penh travel guide to hand. Check clothing sizes in Cambodia before you shop.
Frequently Asked Questions
Is May a good time to visit Phnom Penh?
May rates 9/10 for visiting Phnom Penh — excellent time to visit. Expect average highs of 33.3°C, 190.1mm of rain across the month and about 10.0 hours of daily sunshine.
What is the temperature in Phnom Penh in May?
In May, Phnom Penh has average highs of 33.3°C (91.9°F) and average lows of 26.2°C (79.2°F).
Does it rain in Phnom Penh in May?
Yes — May is one of the wetter months in Phnom Penh, averaging 190.1mm of rain over roughly 24 rainy days. Pack for heavy showers.
What should I wear in Phnom Penh in May?
For Phnom Penh in May (33.3°C highs / 26.2°C lows), pack lightweight, breathable clothing plus high spf sunscreen, sunglasses, sun hat.
More essentials for Phnom Penh in May
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.