City, Cambodia
Siem Reap weather by month and the best time to visit
When to go to Siem Reap
Nov–Feb is dry and coolest, and the busiest at Angkor. Mar–May is very hot; Jun–Oct is green and rainy with fewer crowds and some flooded roads.
Siem Reap weather by month
Average daily high, rainfall and conditions.
- Jan34°12 mm
- Feb36°16 mm
- Mar36°46 mm
- Apr36°75 mm
- May34°140 mm
- Jun32°168 mm
- Jul30°197 mm
- Aug30°195 mm
- Sep30°231 mm
- Oct31°138 mm
- Nov31°37 mm
- Dec32°7 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 34°C92°F | 21°C69°F | 12 mm | 57% | Hot |
| February | 36°C96°F | 23°C73°F | 16 mm | 53% | Hot |
| March | 36°C98°F | 25°C77°F | 46 mm | 57% | Very hot |
| April | 36°C96°F | 26°C78°F | 75 mm | 64% | Hot |
| May | 34°C93°F | 25°C78°F | 140 mm | 75% | Hot & humid |
| June | 32°C89°F | 25°C76°F | 168 mm | 82% | Rainy |
| July | 30°C87°F | 24°C75°F | 197 mm | 85% | Rainy |
| August | 30°C87°F | 24°C75°F | 195 mm | 86% | Rainy |
| September | 30°C86°F | 24°C75°F | 231 mm | 87% | Rainy |
| October | 31°C87°F | 23°C74°F | 138 mm | 84% | Pleasant |
| November | 31°C88°F | 22°C71°F | 37 mm | 78% | Hot & humid |
| December | 32°C90°F | 20°C68°F | 7 mm | 65% | Pleasant |
Best months across Cambodia
| Place | Best months | Warmest month |
|---|---|---|
| Siem Reap | Nov–Feb | Mar (36°C) |
| Phnom Penh | Nov–Feb | Mar (37°C) |
| Koh Rong | Nov–Mar | May (30°C) |
| Kampot | Nov–Feb | Mar (33°C) |
| Sihanoukville | Nov–Feb | Apr (31°C) |
| Koh Rong Samloem | Nov–Mar | May (30°C) |
| Battambang | Nov–Feb | Mar (36°C) |
| Kep | Nov–Feb | Mar (33°C) |
Quick answers
What is the best month to visit Siem Reap?
Nov–Feb. Nov–Feb is dry and coolest, and the busiest at Angkor. Mar–May is very hot; Jun–Oct is green and rainy with fewer crowds and some flooded roads.
When is the rainy season in Siem Reap?
Rain peaks in September with about 231 mm. Months with 150 mm or more: Jun–Sep.
What is the hottest month in Siem Reap?
March, with average highs of 36°C (98°F).
How cold does Siem Reap get?
The coolest nights are in December, averaging 20°C (68°F).
More about Siem Reap
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Sources
- NASA POWER climatology (2001–2020)
- Angkor Enterprise (Angkor Pass)
- Cambodia e-Visa
- Royal Angkor International Hospital
- Grab Cambodia
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.