Cambodia Siem Reap Weather in October — Climate Guide
October in Siem Reap is moderate
October is moderate for Siem Reap.
October marks the monsoon tapering — 16 rainy days, 230mm rainfall (down from September's 275mm). Late October brings significantly drier conditions — perfect bridge into November's peak season. Hotel rates start climbing late month as the dry season approaches.
Late October is the year's last value window — same lush green Angkor + low crowds + 30-40% discount before November's peak return. Korean Hangeul Day (October 9) holiday partial overlap.
Travel score
Monsoon tapering — last value window before November peak
October Weather at a Glance
October averages 32°C / 90°F highs and 24°C / 75°F lows with 16 rainy days and 230mm rainfall. Humidity 80%, UV 9. Sunrise 6:00 AM, sunset 5:40 PM. Late October significantly drier than September.
October Travel Advice
Late October (after Oct 20) is the value sweet spot — lush green Angkor + cheaper hotels + tapering rain. Pre-book Cuisine Wat Damnak + Phare Circus + Angkor pass.
Flying In from Overseas
Late monsoon recovery. Korean Hangeul Day partial holiday overlap. Direct flights from Bangkok $30-80, Singapore $100-200.
October Pricing Trends
Late monsoon: Raffles $200-450/night, Park Hyatt $200-450, FCC Angkor $100-200, Onederz Hostel $10-20.
Siem Reap October Weather Stats
Avg High
32°C
Avg Low
24°C
Rainy Days
16
230mm total
Sunshine
6h
Daily avg
Humidity
80%
high
UV Index
9
Very high
Wind
8 km/h
Gusts 25
Sea Temp
0°C
no swimming
Crowds
Moderate
At attractions
October Sunrise & Sunset
Air Quality
PM2.5
25 μg/m³
PM10
40 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
8 km/h
Max gust 25 km/h
Activities Recommended for October
October Travel Pros & Cons
Pros
- Monsoon tapering — drier conditions late month
- Lush green Angkor continues
- Late October last value window before November peak
Cons
- Still 16 rainy days
- Late October hotel rates climb
- Some road condition issues at outer temples
October Events & Festivals
- Monsoon ending
- Pchum Ben Festival tail (early October)
- Korean Hangeul Day
Siem Reap in October — Full Picture
October marks the monsoon tapering — 16 rainy days, 230mm rainfall (down from September's 275mm). Late October brings significantly drier conditions — perfect bridge into November's peak season. Hotel rates start climbing late month as the dry season approaches.
Late October is the year's last value window — same lush green Angkor + low crowds + 30-40% discount before November's peak return. Korean Hangeul Day (October 9) holiday partial overlap.
What to Wear & What to Pack
Monsoon tapering — quick-dry, light rain jacket, insect repellent. Late October brings drier conditions.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
35.7°C
24.3°C
6.7/mo
Summer (Jun·Jul·Aug)
33.3°C
25°C
15/mo
Autumn (Sep·Oct·Nov)
Current31.7°C
23.3°C
13.7/mo
Winter (Dec·Jan·Feb)
32°C
21°C
1.3/mo
Siem Reap Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 32° | 21° | 1d·10mm | 9h | 60% | 10 | Very busy | Peak |
| February (Best) | 33° | 21° | 1d·5mm | 10h | 55% | 10 | Very busy | Peak |
| March (Best) | 35° | 23° | 3d·25mm | 9h | 55% | 11 | Busy | Shoulder |
| 37° | 25° | 4d·50mm | 9h | 60% | 11 | Moderate | Shoulder | |
| 35° | 25° | 13d·175mm | 7h | 75% | 11 | Quiet | Low season | |
| 34° | 25° | 14d·175mm | 6h | 80% | 11 | Moderate | Low season | |
| 33° | 25° | 15d·200mm | 6h | 80% | 10 | Moderate | Shoulder | |
| 33° | 25° | 16d·225mm | 6h | 80% | 10 | Moderate | Shoulder | |
| 32° | 24° | 18d·275mm | 5h | 85% | 10 | Quiet | Low season | |
| 32° | 24° | 16d·230mm | 6h | 80% | 9 | Moderate | Low season | |
| November (Best) | 31° | 22° | 7d·70mm | 7h | 70% | 9 | Busy | Shoulder |
| December (Best) | 31° | 21° | 2d·15mm | 9h | 60% | 9 | Very busy | Peak |
View Other Months
Siem Reap October Hotel Picks
Frequently Asked Questions
Is October a good time to visit Siem Reap?
Siem Reap in October is moderate. Tourist crowds are moderate and flight/hotel prices are low season.
What's the average temperature in Siem Reap in October?
Siem Reap October averages a high of 32°C and a low of 24°C.
Does it rain much in Siem Reap in October?
Siem Reap October averages 230mm of rainfall over about 16 rainy days.
What should I wear in Siem Reap in October?
Monsoon tapering — quick-dry, light rain jacket, insect repellent. Late October brings drier conditions.
What time are sunrise and sunset in Siem Reap in October?
Siem Reap October sunrise is 06:00 and sunset is 17:40, with 11h 40min of daylight.
What's the air quality like in Siem Reap in October?
Siem Reap October air quality (AQI) averages 65, rated Moderate. PM2.5 averages 25μg/m³.
What activities are recommended in Siem Reap in October?
In October, Siem Reap is great for Pre-dawn Angkor, Tonle Sap (peak water continues), Khmer cooking class.
Is October peak season in Siem Reap?
Siem Reap October crowds are moderate and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Siem Reap
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.