What is the weather like in Siem Reap throughout the year?

Siem Reap experiences varying weather throughout the year. The warmest month is April with average highs of 34°C. The coolest month is December.

What is the weather like in Siem Reap in December?

Siem Reap in December scores 66/100 based on 30 years of climate data. Very good conditions overall.

Who should visit Siem Reap in December?

December in Siem Reap is ideal for: Families with children, Outdoor enthusiasts, Cultural tourists, Honeymoon couples, Business travelers.

Best Time to Visit Siem Reap | 30-Year Weather Analysis

Why December is the Best Time to Visit Siem Reap

Is December a Good Time to Visit Siem Reap?

👍Very good conditions overall(66/100)

Short Answer

Ideal December conditions in Siem Reap: 30°C comfortable highs, just 7% chance of rain. The 68% humidity feels pleasant, making this prime sightseeing season.

Decision Factors

Vaccinations required

Yellow Fever

Excellent dry conditions

Only 7% rain probability - ideal for outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Schistosomiasis

Plenty of sunshine

9.6h of sunshine daily

Shoulder season - balanced conditions

50% of peak - good value with moderate crowds

Good For

👨‍👩‍👧‍👦
Families with children
Comfortable 29.9°C temperatures and low 7% rain risk
🥾
Outdoor enthusiasts
Ideal hiking conditions: 29.9°C, 7% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 100/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

🌡️
Heat-sensitive visitors
34°C feels-like temperature creates discomfort

Warmest

April

34°C avg

Coolest

December

30°C avg

Driest

January

3% rain

Wettest

September

79% rain

Planning Your Trip to Siem Reap, Cambodia

Wondering when is the best time to visit Siem Reap? Based on our analysis of 30 years of NASA satellite weather data, the ideal months to travel to Siem Reap are December, January, February. During these months, you'll experience optimal temperatures around 30°C with only 7% chance of rain.

The Siem Reap climate varies throughout the year. April is the hottest month with average highs of 34°C, while December is the coldest at 30°C. If you're planning outdoor activities or sightseeing in Siem Reap, avoid September when rainfall peaks at 79% probability.

For the best Siem Reap weather experience, we recommend visiting during January for the driest conditions or the shoulder months of December and January for a perfect balance of weather and fewer crowds.

Siem Reap Weather by Month: Climate Guide

Click any month to explore detailed daily forecasts for Siem Reap

🏆 85-100: Excellent👍 70-84: Great👌 55-69: Good🤔 40-54: Fair⚠️ 0-39: Challenging

When to Visit Siem Reap: Travel Style Guide

Personalized Siem Reap travel recommendations based on 30-year weather data

Beach Lovers

Warmest months with comfortable temperatures for outdoor activities

MarchAprilFebruary

Budget Travelers

Shoulder season with good weather and lower prices

April

Avoiding Crowds

Fewer tourists with acceptable weather conditions

MarchAprilNovember

Honeymoon

Perfect conditions for a romantic getaway

JanuaryFebruaryDecember

Siem Reap Weather FAQ: Your Questions Answered

What is the best time to visit Siem Reap?

Based on 30 years of weather data, the best months to visit Siem Reap are December, January, February. These months offer the optimal combination of pleasant temperatures (30°C avg) and low rainfall (7% chance).

When is the hottest time of year in Siem Reap?

April is historically the warmest month in Siem Reap with average highs of 34°C. If you prefer cooler weather, consider visiting in December when temperatures average around 30°C.

When is the rainy season in Siem Reap?

September typically sees the most rainfall in Siem Reap with a 79% chance of rain. For the driest conditions, plan your visit in January when rain probability drops to just 3%.

How accurate is the Siem Reap weather forecast?

Our Siem Reap climate analysis is based on 30 years of NASA POWER satellite observations (1995-2024), providing highly accurate historical averages. While weather can vary year to year, these long-term patterns are excellent indicators for planning your trip to Siem Reap.

What should I pack for Siem Reap?

Packing depends on when you visit. In April (warmest month), pack light summer clothes for 34°C weather. In December (coolest month), bring layers for 30°C temperatures. During September, pack rain gear as there's a 79% chance of rain.

Is Siem Reap good for a destination wedding?

Yes! The best months for an outdoor wedding in Siem Reap are January (only 3% rain chance) and December for optimal weather conditions. Avoid September when rain probability peaks at 79%.