The month in detail
What to expect in January
January is peak dry season in Siem Reap. The air is warm and humidity more bearable than in the rainy season. Rain is virtually absent (4% of days) — ideal for planning without a backup.
January is the best month of the year in Siem Reap. Compared to December: +0.5h of sun per day.
This month's conditions
What it's like in January
UV index
7 · high
sunscreen and hat advised
Feels like
muggy at times
18°
Daylight
11.3h of daylight
Air quality
good
AQI 31
Compare
Is January the right month?
January is actually the best month of the year in Siem Reap. Good timing.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Siem Reap
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Siem Reap
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Cambodia
🗣️LanguageKhmer
💶CurrencyRiel cambodgien (៛)
🚗DrivingRight-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthMarch · 34°C
❄️Coolest monthDecember · 30°C
🌧️Rainiest month ⓘSeptember · 63%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in January
If January doesn't convince you for this destination, compare with others.
Similar climate
Phnom PenhCambodiaCambodiaCambodia
BangkokThailandBattambangCambodiaChiang MaiThailand
Location
Where is Siem Reap ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
CambodiaTropical climate with a 6.1 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.
13.36°N · 103.86°E
Questions
Frequently asked questions
What is the best time to visit Siem Reap?
January is the best month with 31.0°C highs, 22.0°C lows, 8.2h of sunshine and 4.0% rainy days.
How many hours of sunshine does Siem Reap get in January?
Siem Reap averages 8.2 sunshine hours per day in January. It is the sunniest month with a climate score of 6.0/10.
What is the rainiest month in Siem Reap?
May is the most unfavourable month with May has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Siem Reap in January?
In January, overnight lows reach 22.0°C, while afternoon highs average 31.0°C.
Is Siem Reap good in winter?
In winter (December-February), Siem Reap scores 5.9/10 on average — Decent period conditions for cultural visits.. The best month overall remains January with a score of 6.0/10.
When should you avoid Siem Reap?
May is the most difficult month to visit Siem Reap, with May has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Siem Reap in January?
The average UV index reaches 7 in January in Siem Reap (high), with about 11.3h of daylight. Sunscreen and hat advised.