When to go
The Best Time to Visit Siem Reap
Month-by-month climate data for Siem Reap, Cambodia — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning Siem Reap— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
Warmest in Siem Reap: Mar (35°C / 95°F) · Coolest: Oct (30°C / 86°F) · Wettest: Sep (~29 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Siem Reap climate, month by month
January
31° / 21°C
~2 rain days
Excellent
February
33° / 23°C
~5 rain days
Good
March
35° / 25°C
~10 rain days
Fair
April
34° / 26°C
~16 rain days
Fair
May
33° / 26°C
~23 rain days
Tough
June
33° / 26°C
~22 rain days
Tough
July
32° / 25°C
~28 rain days
Fair
August
32° / 25°C
~27 rain days
Fair
September
31° / 24°C
~29 rain days
Fair
October
30° / 23°C
~24 rain days
Fair
November
30° / 23°C
~13 rain days
Good
December
30° / 21°C
~4 rain days
Excellent
Plan around it
Dates locked in? Start from the Siem Reap travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.