Siem Reap, CambodiaQuick decision
When to visit Siem Reap?
🌞 Best time overall
January
🌡️ Optimal temperature
22°C–31°C in January
🌧 Least rain
7% rainy days in January
🌧 Wettest month
September (91%)
📅 Best score
8.3/10
By trip type
Best time by type of trip
AngkorNovember–March — dry season, sunrise over Angkor Wat, Ta Prohm.
Tonlé SapOctober–November — lake at full flood, impressive floating villages.
Khmer CultureYear-round — national museum, Apsara dance shows, local crafts.
Food & DiningYear-round — amok, lok lak, Pub Street night market.
FamilyDecember–March — bearable temperatures, Angkor with the family.
BudgetJune–September — monsoon, hotels often cheaper, temples nearly empty.
Monthly climate data
Siem Reap weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ☀️ January | 22°C | 31°C | 7% | 0.5 | 10.5h | 8.3/10 |
| ☀️ February | 23°C | 32°C | 15% | 0.9 | 10.8h | 8.0/10 |
| 🌤️ March | 25°C | 34°C | 35% | 1.9 | 11.0h | 7.1/10 |
| 🌤️ April | 26°C | 34°C | 47% | 3.4 | 11.5h | 7.0/10 |
| ⛅ May | 26°C | 33°C | 77% | 7.0 | 11.0h | 6.1/10 |
| ⛅ June | 26°C | 32°C | 76% | 5.3 | 10.4h | 7.0/10 |
| 🌦️ July | 26°C | 32°C | 85% | 7.1 | 9.2h | 5.8/10 |
| 🌦️ August | 25°C | 32°C | 81% | 6.9 | 9.5h | 6.2/10 |
| 🌦️ September | 24°C | 31°C | 91% | 11.3 | 8.6h | 5.5/10 |
| ⛅ October | 24°C | 31°C | 75% | 8.1 | 9.7h | 7.0/10 |
| 🌤️ November | 23°C | 31°C | 45% | 3.5 | 10.3h | 7.4/10 |
| ☀️ December | 22°C | 30°C | 15% | 1.0 | 10.1h | 8.3/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
🌴 Tropical destination — heavy rain months benefit from an algorithmic adjustment: tropical showers are intense but brief and usually don't ruin a trip.
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Acceptable
Average 34°C, 53% rainy days, 11.2h sunshine/day. Score: 6.7/10.
☀️ Summer (Jun–Aug) — Acceptable
Average 32°C, 81% rainy days, 9.7h sunshine/day. Score: 6.3/10.
🍂 Autumn (Sep–Nov) — Acceptable
Average 31°C, 70% rainy days, 9.5h sunshine/day. Score: 6.6/10.
❄️ Winter (Dec–Feb) — Good time
Average 31°C, 12% rainy days, 10.5h sunshine/day. Score: 8.2/10.
Accommodation
Find a place to stay in Siem Reap
Check availability during the recommended period
Tip : off-peak months (September, October) are cheapest but weather is significantly worse.
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Activities and tours in Siem Reap
Guided tours, skip-the-line tickets and local experiences.
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
January is ideal with 7% rainy days and 31°C. The months of January & December offer comparable conditions.
September is the wettest month with 91% rainy days.
Yes, January is the best month with an average of 31°C.
In winter, the average score is 8.2/10. Acceptable conditions for cultural visits.
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