Cambodia Siem Reap Weather in April — Climate Guide
April in Siem Reap is moderate
April is moderate for Siem Reap.
April is Siem Reap's hottest month — 37°C / 99°F highs, felt temperatures 40°C+, humidity climbing to 60%. The signature event is Khmer New Year (April 13-15), Cambodia's most important traditional holiday with family gatherings, temple offerings, and water-fight celebrations in Pub Street.
Many small shops and restaurants close for 3 days during Khmer New Year, but hotels and major attractions remain open. Hotel rates drop 30-50% from peak season — Raffles $200-500/night, Park Hyatt $250-500. The cultural experience compensates for the heat.
Travel score
Hottest month + Khmer New Year — cultural experience over comfort
April Weather at a Glance
April averages 37°C / 99°F highs and 25°C / 77°F lows with 4 rainy days and 50mm rainfall. Humidity 60%, UV 11. Felt temperatures hit 40°C+ midday. Sunrise 6:00 AM, sunset 6:10 PM. Cool 25°C dawns make pre-dawn Angkor sunrise the only comfortable outdoor option until late afternoon.
April Travel Advice
Pool-equipped hotels mandatory. Schedule pre-dawn Angkor sunrise + 6:00-10:00 temples + 10:00-16:00 pool/spa + 16:30-18:30 sunset. Khmer New Year (April 13-15): join water-fights in Pub Street with waterproof phone + dry bag. Major attractions stay open during the holiday.
Flying In from Overseas
Hot-season low — Western visitors thin out. Korean Buddha's Birthday spring tourism partial overlap. Direct flights from Bangkok $30-80, Singapore $100-250. Visa-on-arrival $30 or e-Visa $36.
April Pricing Trends
Hot-season discount: Raffles $250-500/night, Park Hyatt $250-450, FCC Angkor $100-200, Onederz Hostel $10-20. Angkor 3-day pass $62. Tuk-tuk $15-25/day (lower demand).
Siem Reap April Weather Stats
Avg High
37°C
Avg Low
25°C
Rainy Days
4
50mm total
Sunshine
9h
Daily avg
Humidity
60%
moderate
UV Index
11
Extreme
Wind
8 km/h
Gusts 18
Sea Temp
0°C
no swimming
Crowds
Moderate
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
35 μg/m³
PM10
55 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
40°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
8 km/h
Max gust 18 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- Khmer New Year cultural experience (April 13-15)
- Hotels 30-50% off peak
- Crowds thin at temples
Cons
- Hottest month — felt 40°C+
- Many small shops closed 3 days during Khmer New Year
- Outdoor activities limited to early morning + late evening
April Events & Festivals
- Khmer New Year Chaul Chnam Thmey (April 13-15) — Cambodia's biggest festival
- Year's hottest month
- Western Easter holiday week
Siem Reap in April — Full Picture
April is Siem Reap's hottest month — 37°C / 99°F highs, felt temperatures 40°C+, humidity climbing to 60%. The signature event is Khmer New Year (April 13-15), Cambodia's most important traditional holiday with family gatherings, temple offerings, and water-fight celebrations in Pub Street.
Many small shops and restaurants close for 3 days during Khmer New Year, but hotels and major attractions remain open. Hotel rates drop 30-50% from peak season — Raffles $200-500/night, Park Hyatt $250-500. The cultural experience compensates for the heat.
First-time visitors should target November-March. April suits cultural enthusiasts, budget travelers, and visitors with hot-weather tolerance + pool-equipped hotels.
What to Wear & What to Pack
Hottest month of the year — light tropical, hat, SPF 50+, 3L+ daily water. Khmer New Year (April 13-15) water-fights — waterproof phone case + dry bag mandatory if visiting Pub Street.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current35.7°C
24.3°C
6.7/mo
Summer (Jun·Jul·Aug)
33.3°C
25°C
15/mo
Autumn (Sep·Oct·Nov)
31.7°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 April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Siem Reap?
Siem Reap in April is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Siem Reap in April?
Siem Reap April averages a high of 37°C and a low of 25°C.
Does it rain much in Siem Reap in April?
Siem Reap April averages 50mm of rainfall over about 4 rainy days.
What should I wear in Siem Reap in April?
Hottest month of the year — light tropical, hat, SPF 50+, 3L+ daily water. Khmer New Year (April 13-15) water-fights — waterproof phone case + dry bag mandatory if visiting Pub Street.
What time are sunrise and sunset in Siem Reap in April?
Siem Reap April sunrise is 06:00 and sunset is 18:10, with 12h 10min of daylight.
What's the air quality like in Siem Reap in April?
Siem Reap April air quality (AQI) averages 80, rated Moderate. PM2.5 averages 35μg/m³.
What activities are recommended in Siem Reap in April?
In April, Siem Reap is great for Khmer New Year cultural, Pre-dawn Angkor sunrise (cool), Hotel pool afternoon.
Is April peak season in Siem Reap?
Siem Reap April crowds are moderate and prices are shoulder. 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.