Best Time to Visit Siem Reap, Cambodia (2026 & 2027)
Angkor Wat sunrise reflections, giant banyan roots at Ta Prohm & Khmer heritage. December to February offers blue skies, dry trails, and comfortable 26–28°C weather before April heat spikes.
- Optimal 7-Day Window (2026)
- Favorable Synthesis Window (Jan 8 – Jan 14, 2026)
- Optimal 7-Day Window (2027)
- Favorable Synthesis Window (Jan 8 – Jan 14, 2027)
- Lightest Crowds & Footfall
- July (Space Score: 83/100)
- Peak Congestion to Avoid
- Severe Climate & Low Season Window (Sep 26 – Oct 2)
- Most Favorable Room Rates
- June (Below-Average Rates)
The 5 Travel Decision Pillars for Siem Reap
TripTiming computes suitability using five empirical pillars balanced to eliminate compromises:
Recommended Windows vs. Dates to Avoid
Favorable Synthesis Window
Balanced travel harmony: comfortable weather (~26°C), manageable tourist crowds, and fair accommodation rates.
Severe Climate & Low Season Window
Challenging seasonal weather (~27°C with 7 rain risk days). While crowds are lighter, outdoor sightseeing comfort is compromised.
12-Month Timing & Seasonal Calendar
Monthly calibrated composite index scores and environmental conditions:
| Month | Index & Tier | Crowds | Weather Comfort | Rain % | Lodging Value |
|---|---|---|---|---|---|
| January | 70 / 100 · favorable | Moderate Footfall | 26°C (Feels 33°C) · High Humid Heat | 7% |
Standard Room Rates
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| February | 69 / 100 · favorable | Moderate Footfall | 27°C (Feels 32°C) · Seasonal Temperatures | 27% |
Below-Average Rates
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| March | 66 / 100 · favorable | Moderate Footfall | 29°C (Feels 36°C) · High Humid Heat | 37% |
Below-Average Rates
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| April | 59 / 100 · moderate | Moderate Footfall | 30°C (Feels 35°C) · High Humid Heat | 43% |
Standard Room Rates
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| May | 23 / 100 · friction | Moderate Footfall | 29°C (Feels 34°C) · High Precipitation / Rain | 77% |
Below-Average Rates
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| June | 30 / 100 · friction | Low Density / Tranquil | 28°C (Feels 34°C) · High Precipitation / Rain | 77% |
Below-Average Rates
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| July | 25 / 100 · friction | Low Density / Tranquil | 27°C (Feels 32°C) · High Precipitation / Rain | 94% |
Below-Average Rates
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| August | 22 / 100 · friction | Moderate Footfall | 28°C (Feels 33°C) · High Precipitation / Rain | 90% |
Standard Room Rates
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| September | 25 / 100 · friction | Low Density / Tranquil | 27°C (Feels 32°C) · High Precipitation / Rain | 97% |
Below-Average Rates
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| October | 62 / 100 · moderate | Moderate Footfall | 27°C (Feels 31°C) · High Precipitation / Rain | 72% |
Below-Average Rates
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| November | 47 / 100 · moderate | Moderate Footfall | 27°C (Feels 32°C) · Seasonal Temperatures | 45% |
Below-Average Rates
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| December | 68 / 100 · favorable | Moderate Footfall | 25°C (Feels 33°C) · High Humid Heat | 15% |
Elevated Seasonal Rates
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Top Landmarks & Queuing Strategy
Angkor Wat Main Temple Complex
Pro-Tip: Arrive at the northern reflection pond at 05:00 AM for the iconic silhouette sunrise.
Ta Prohm (Tomb Raider Temple)
Pro-Tip: Enormous strangler fig tree roots embracing 12th-century mossy stone carvings.
Bayon Temple (Angkor Thom Face Towers)
Pro-Tip: 216 serene smiling stone faces of Avalokiteshvara gazing in all cardinal directions.
Tonlé Sap Floating Villages (Kompong Phluk)
Pro-Tip: Wooden houses on 10-meter stilts and mangrove canoe tours through flooded forests.
Key Events & Seasonal Surges in Siem Reap
Angkor Wat International Half Marathon
Runners through ancient stone temple ruins to raise funds for landmine survivors.
Khmer New Year (Choul Chnam Thmey)
Traditional games at Angkor Wat, temple blessings, and festive water splashing.
Frequently Asked Questions About Visiting Siem Reap
When is the best time to visit Siem Reap?
The highest-scoring travel month for Siem Reap is January with an overall TripTiming Index of 70 / 100 (favorable). December to February offers blue skies, dry trails, and comfortable 26–28°C weather before April heat spikes.
What is the least crowded month in Siem Reap?
July typically features the lowest seasonal crowd footprint in Siem Reap, offering unhurried museum and landmark access. Spiritual archaeological wonder of the world surrounded by peaceful lotus fields and hospitable Khmer village life.
When are hotel rates most favorable in Siem Reap?
Accommodation rates in Siem Reap reach their best value tier in June (below-average rates), outside of high-demand statutory holiday periods.
Is Siem Reap safe for international visitors?
Siem Reap has a municipal safety index score of 62.4 / 100. Exercise standard urban vigilance in major transit hubs and popular tourist plazas after dark.