January · Cambodia
Best time to visit Siem Reap in January Weather, crowds & prices
Weather in Siem Reap in January
Average temperature 26°C, 41 mm of rain, about 29 days with 6+ hours of sunshine and 67% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
8.0/10
Ranked #2 of 12 months
- Avg temp
- 26°C
- Rainfall
- 41 mm
- Humidity
- 67%
- Days with 6h+ sun
- 29
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
January in Siem Reap scores 8.0/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 26°C, 41 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Siem Reap is the base for Angkor's temples, with a river town of markets and cafés beside it.
January holds up well in Siem Reap — 2nd best month
January averages 26°C (78°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Expect 41 mm of rain — occasional showers rather than washed-out days — alongside about 29 days with 6+ hours of sunshine and 11.4 daylight hours.
It scores 8/10 here, 2nd of 12 months, against 8.4/10 in the destination's best month.
Pack light clothing, a hat and real sun protection.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Siem Reap in January?
- In January, Siem Reap averages 26°C, 41 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.0/10.
- Is January a good time to visit Siem Reap?
- January earns a 8.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Siem Reap in January?
- Expect about 41 mm of rain in January. Average humidity is 67% and there are about 29 days with 6+ hours of sunshine.
Curated in Siem Reap
Tickets & experiences
Things to do in Siem Reap
Siem Reap, Cambodia. Live activities and tours from GetYourGuide, matched to this destination.