Yearly weather and climate in Siem Reap, Cambodia
The yearly weather in Siem Reap runs from around 21°C in January to 35°C in March. January is the driest month at 2 rainy days; September the wettest at 29. Here is the annual climate data, so you know what you are packing for.
Best time to visit
The best weather is typically in Jan, Feb, Dec, with mild temperatures and lower rainfall.
Sunshine
Expect up to 11 hours of clear skies in Mar, but only 7 hours in Sep. Pack sunglasses and SPF accordingly.
Rainfall
It rains the most in Sep (380mm over 29 days). A reliable rain jacket is a must-have if visiting then.
Day-to-night swings
Temperatures typically drop by 8°C from day to night. Make sure to pack layers for the evenings.
Average temperatures and rainfall
Daily highs and lows in Siem Reap, averaged over 10 years of recorded weather, with the number of days it typically rains.
- 3188°2170°2Jan
- 3391°2373°5Feb
- 3594°2577°10Mar
- 3494°2678°16Apr
- 3392°2679°23May
- 3391°2678°22Jun
- 3289°2577°28Jul
- 3289°2577°27Aug
- 3187°2476°29Sep
- 3086°2474°24Oct
- 3187°2373°13Nov
- 3086°2170°4Dec
Bars span the average daily low to high. Numbers under the drop are rainy days per month (1mm or more) — hover a month for its total rainfall. Jan is typically driest at 2 days (25mm); Sep the wettest at 29 days (380mm).
| Month | Average high | Average low | Rainy days | Total rainfall |
|---|---|---|---|---|
| Jan | 31°C | 21°C | 2 | 25mm |
| Feb | 33°C | 23°C | 5 | 34mm |
| Mar | 35°C | 25°C | 10 | 49mm |
| Apr | 34°C | 26°C | 16 | 130mm |
| May | 33°C | 26°C | 23 | 227mm |
| Jun | 33°C | 26°C | 22 | 162mm |
| Jul | 32°C | 25°C | 28 | 280mm |
| Aug | 32°C | 25°C | 27 | 230mm |
| Sep | 31°C | 24°C | 29 | 380mm |
| Oct | 30°C | 24°C | 24 | 306mm |
| Nov | 31°C | 23°C | 13 | 125mm |
| Dec | 30°C | 21°C | 4 | 29mm |
Weather data by Open-Meteo.com
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