Weather in Siem Reap in January
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 January in Siem Reap.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youSiem Reap in January is hot — daytime temperatures average 31.0°C, dropping to 21.0°C at night. The month is mostly dry with only occasional showers, with roughly 10.3 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 Siem Reap — every month compared. Once you know when to go, find your Siem Reap packing list at 247PackingList.
Get ready for Siem Reap in January
Search flights to Siem Reap
Compare 100+ airlines for January — 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 Siem Reap in January
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
Compare all months in Siem Reap
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 31.0°C | 31.1mm | 10/10 |
| February | 32.7°C | 36.1mm | 10/10 |
| March | 34.6°C | 47.5mm | 10/10 |
| April | 33.6°C | 156.1mm | 9/10 |
| May | 33.1°C | 227.2mm | 8/10 |
| June | 32.9°C | 162.3mm | 9/10 |
| July | 31.7°C | 268.7mm | 8/10 |
| August | 31.7°C | 237.6mm | 8/10 |
| September | 30.3°C | 396.0mm | 8/10 |
| October | 30.0°C | 309.8mm | 8/10 |
| November | 30.2°C | 132.1mm | 9/10 |
| December | 29.8°C | 28.9mm | 10/10 |
Full month-by-month guide: best time to visit Siem Reap →
For facts about Cambodia — currency, language and dialling code — see our Cambodia country guide at 247CountryInfo. Travellers also find it useful to keep a Siem Reap travel guide to hand. Check clothing sizes in Cambodia before you shop.
Frequently Asked Questions
Is January a good time to visit Siem Reap?
January rates 10/10 for visiting Siem Reap — excellent time to visit. Expect average highs of 31.0°C, 31.1mm of rain across the month and about 10.3 hours of daily sunshine.
What is the temperature in Siem Reap in January?
In January, Siem Reap has average highs of 31.0°C (87.8°F) and average lows of 21.0°C (69.8°F).
Does it rain in Siem Reap in January?
Not much. January averages just 31.1mm of rain in Siem Reap — the odd shower is possible but most days stay dry.
What should I wear in Siem Reap in January?
For Siem Reap in January (31.0°C highs / 21.0°C lows), pack lightweight, breathable clothing plus high spf sunscreen, sunglasses, sun hat.
More essentials for Siem Reap in January
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.