Weather in Phnom Penh in December
As an Amazon Associate we earn from qualifying purchases. We also earn commission from other retail partners. Links below are affiliate links.
Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for December in Phnom Penh.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youPhnom Penh in December is hot — daytime temperatures average 30.2°C, dropping to 23.0°C at night. The month is mostly dry with only occasional showers, with roughly 10.2 hours of sunshine a day. Weather-wise, this is one of the most reliable months to travel. 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 December
Search flights to Phnom Penh
Compare 100+ airlines for December — one search, best price.
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 December
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
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 December a good time to visit Phnom Penh?
December rates 10/10 for visiting Phnom Penh — excellent time to visit. Expect average highs of 30.2°C, 33.6mm of rain across the month and about 10.2 hours of daily sunshine.
What is the temperature in Phnom Penh in December?
In December, Phnom Penh has average highs of 30.2°C (86.4°F) and average lows of 23.0°C (73.4°F).
Does it rain in Phnom Penh in December?
Not much. December averages just 33.6mm of rain in Phnom Penh — the odd shower is possible but most days stay dry.
What should I wear in Phnom Penh in December?
For Phnom Penh in December (30.2°C highs / 23.0°C lows), pack lightweight, breathable clothing plus high spf sunscreen, sunglasses, sun hat.
More essentials for Phnom Penh in December
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
Check Price →Last updated:
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.