What to expect in Siem Reap in January
January is one of the best times to visit Siem Reap. Expect 31° / 19°, the biggest crowds of the year and premium prices.
Siem Reap weather in January
Typical conditions in Siem Reap during January, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 31°C 88°F |
|---|---|
| Average low | 19°C 66°F |
| Rainfall | Dry 5/100 |
| Total rainfall | 4 mm0.2 in |
| Daylight | 11 h 25 min |
| How it feels | Hot — midday shade matters |
Average highs sit around 31°C with lows near 19°C. It is one of the drier months — pack light.
Crowds & demand
Crowd levels are High for Siem Reap — the biggest crowds of the year.
Prices & value
This month counts as high season: premium prices.
What to pack
Lightweight, breathable clothes, strong sun protection and a refillable bottle — highs near 31°C make midday heat the main constraint. Rain gear is largely optional this month, which keeps your bag light.
What it costs
This is peak pricing for Siem Reap. Expect to pay a premium on flights and accommodation, and to book considerably further ahead than usual. Compared with the most expensive month of the year, you are looking at roughly 4% less.
Who this month suits
- Travellers who want the most reliable weather
- Families tied to school holidays
Events & what’s on
No major festivals fall in January, so the destination feels like its everyday self.
Siem Reap in January compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| November | 30° / 21° | Moderate | $$ | 55 |
| December | 30° / 19° | High | $$$ | 46 |
| January · This month | 31° / 19° | High | $$$ | 47 |
| February | 33° / 21° | High | $$$ | 46 |
| March | 35° / 23° | Moderate | $$ | 53 |
These months score higher for Siem Reap on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in January
If the destination is negotiable but the month is not, these places are at their best in January.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
