Cambodia Weather in April

April marks the peak of Cambodia’s hot season, with temperatures soaring across the country. It is one of the hottest months of the year in Cambodia, and while rainfall is still low, the country’s climate can be hot and humid, especially in the capital Phnom Penh and popular tourist areas like Siem Reap. However, as the month progresses, the rainy season starts to creep in, bringing some relief with occasional showers. The overall conditions make April a time to prepare for intense heat and potential humidity, especially if you plan to explore Cambodia’s rich cultural and historical landmarks.

Average Temperatures

April is one of the hottest months in Cambodia, as the country is influenced by tropical monsoon weather. The inland and lowland areas experience very hot daytime temperatures, while the coastal regions, due to the influence of the Gulf of Thailand, remain relatively more moderate.

• Coastal Areas: In coastal cities like Sihanoukville and Kep, the temperatures are generally a bit milder due to the ocean’s moderating influence. The daytime highs in these regions range from 32°C (90°F) to 36°C (97°F), with nights cooling off to around 24°C (75°F) to 26°C (79°F). The breeze from the ocean helps reduce the oppressive heat somewhat, especially in the evenings.
• Inland Regions: In cities like Phnom Penh and Siem Reap, the heat can be intense, with daytime highs ranging from 34°C (93°F) to 40°C (104°F). Nights in these cities remain warm, with lows around 25°C (77°F) to 28°C (82°F). The inland areas experience more heat compared to the coastal regions, and the humidity levels often make it feel even warmer.
• Highland Areas: In the northern and central highland regions, like those around Mondulkiri and Ratanakiri, temperatures are slightly cooler but still relatively warm. Daytime highs range from 30°C (86°F) to 34°C (93°F), with cooler nights, dipping to around 22°C (72°F) to 24°C (75°F).

Table of Average Temperatures and Precipitation (Last 10 Years)

Precipitation Levels

In April, Cambodia experiences little rainfall as the country remains mostly dry at the peak of the hot season. However, this is the precursor to the rainy season that begins in May, and late April can sometimes see the first signs of rain.

• Coastal Areas: Coastal cities like Sihanoukville and Kep experience very little rainfall in April, with precipitation totals generally ranging from 0 mm to 10 mm. Although there might be occasional showers or thunderstorms, they are usually brief and don’t significantly affect outdoor activities.
• Inland Regions: In cities such as Phnom Penh and Siem Reap, rainfall is also relatively low during April. Precipitation levels typically range from 5 mm to 15 mm, and rain is usually sporadic and light, occurring mostly in the late afternoon or evening. April remains primarily dry and sunny, making it a prime time for travel and outdoor exploration.
• Highland Areas: In the northern and central highland regions, the rainfall is slightly higher, but still quite low. Precipitation in these regions typically averages between 5 mm and 10 mm during April. Rain is typically light and brief, but the cooler temperatures in the highlands can make the conditions more bearable compared to the lowland areas.
• Snow: Snow is practically non-existent in Cambodia due to its tropical climate. Even in the cooler highland areas, the temperatures are far too warm to support snow.

Wind Patterns

April sees moderate winds across Cambodia, but the winds are not particularly strong, as the country is still in the transition phase from the dry season to the wet season. The wind speeds vary depending on the location, with coastal areas experiencing stronger winds compared to the inland regions.

• Coastal Areas: Coastal cities like Sihanoukville are often breezy, with wind speeds ranging from 10 km/h to 20 km/h. The winds here help to keep the temperatures relatively comfortable, particularly in the late afternoon and evening when they can bring some relief from the heat.
• Inland Regions: In cities like Phnom Penh and Siem Reap, the wind speeds are generally lighter, ranging from 5 km/h to 15 km/h. While the winds can occasionally pick up in the afternoons, the heat and humidity tend to dominate the weather during the day.
• Mountainous Regions: The northern highlands tend to experience slightly stronger winds due to their elevated terrain, with wind speeds ranging from 10 km/h to 20 km/h. These winds help to cool the temperature in the highlands, but the overall impact on the weather is minimal compared to the coastal areas.

Atmospheric Pressure

Atmospheric pressure in Cambodia during April is relatively stable due to the country’s location near the equator and the dominance of high-pressure systems in the dry season. As the dry season transitions into the rainy season in May, low-pressure systems may start to influence the weather.

• High-Pressure Systems: April typically sees high-pressure systems dominate, leading to clear, dry weather and stable conditions. This is the peak of the dry season in Cambodia, with minimal cloud cover and the typical hot, sunny conditions for most of the month.
• Low-Pressure Systems: Late in the month, there may be occasional low-pressure systems that bring brief rainfall, particularly towards the end of April. These systems are usually not intense but can bring changes in wind and cloud cover as they move through the region.

Things to Consider for Travelers

Traveling to Cambodia in April requires preparation for the hot and dry conditions, particularly if you plan to visit the more inland or desert-like regions. Here are some things to consider:

1. Prepare for the Heat

April is one of the hottest months of the year in Cambodia, particularly in the inland and lowland areas. Be sure to dress in light, breathable clothing made from natural fabrics such as cotton or linen to stay cool. Lightweight hats or scarves can help protect you from the direct sun, especially when exploring outdoors.

• Sunscreen: Use sunscreen with a high SPF regularly, especially when exploring archaeological sites like Angkor Wat or walking through the streets of Phnom Penh. The UV levels can be intense, and protecting your skin from sunburn is essential.

2. Stay Hydrated

With the heat in April, staying hydrated is crucial. Bring a water bottle and ensure you drink plenty of fluids throughout the day, especially during outdoor activities. Bottled water is readily available in most parts of Cambodia, but it’s best to carry water with you when visiting remote areas.

3. Sun Protection

In addition to sunscreen, wear sunglasses with UV protection to shield your eyes from the sun. A wide-brimmed hat or cap is also recommended to provide shade for your face and neck. Consider wearing a scarf or long sleeves to protect your skin from the sun if you are outdoors for extended periods.

4. Plan Activities for Early Morning or Late Afternoon

Since the heat is most intense between 10 a.m. and 4 p.m., it’s best to plan your sightseeing or outdoor activities for the early morning or late afternoon when the temperatures are cooler. Visiting temples like Angkor Wat, exploring national parks, or walking through markets is more comfortable in the cooler parts of the day.

5. Be Prepared for Occasional Rain

Although April is primarily dry, there may be occasional rain showers, particularly towards the end of the month. Keep an umbrella or raincoat handy, especially if you plan to be outdoors for extended periods.

6. Pack for Humidity

Even though April is part of the dry season, the heat can still make the humidity feel intense, especially in the central and southern regions. It’s best to pack light, moisture-wicking clothing and be prepared for a warm and sticky atmosphere.

7. Mosquito Protection

Mosquitoes are prevalent in Cambodia, particularly in the evenings, when they are most active. Use insect repellent, wear long sleeves and pants during mosquito-prone times, and consider sleeping under a mosquito net if staying in more rural or jungle locations.

Things to Do in Cambodia in April

1. Visit Angkor Wat

April is a great time to visit the famous Angkor Wat temple complex in Siem Reap, although the heat can be intense. Explore the ancient temples, including Bayon and Ta Prohm, early in the morning or late in the afternoon to avoid the midday heat. The dry conditions make it easier to walk through the temples without mud or rain interruptions.

2. Relax on Cambodia’s Beaches

The coastal areas, particularly in Sihanoukville and the islands like Koh Rong, offer beautiful beaches. While it can be hot, the sea breeze and the opportunity to cool off in the water make the beach a great place to relax during April. The clear skies and sunshine are perfect for sunbathing, swimming, or diving.

3. Explore Phnom Penh’s Historical Sites

Phnom Penh, the capital of Cambodia, is home to many historical and cultural sites such as the Royal Palace, Silver Pagoda, and the Killing Fields. The dry weather in April makes it easier to visit these landmarks and learn about Cambodia’s rich history and complex past.

4. Discover Cambodia’s Natural Beauty

The national parks and wildlife reserves in Cambodia, such as Bokor National Park and Cardamom Mountains, offer excellent hiking opportunities and nature exploration. The weather in April is ideal for outdoor activities, with clear skies and relatively dry conditions for trekking and exploring the landscapes.

5. Visit the Floating Villages of Tonle Sap Lake

Tonle Sap Lake is home to floating villages, where people live on boats and houses built on stilts. A boat trip through these villages offers a unique glimpse into local life. The mild weather in April makes it a great time to visit this UNESCO-listed biosphere and see the diverse wildlife and culture.

6. Sample Cambodia’s Cuisine

Cambodia’s food scene is diverse, offering delicious dishes like amok, a coconut milk-based curry, and fresh seafood along the coast. April is a great time to sample local street food or dine at traditional Cambodian restaurants, as the heat won’t detract from the culinary experience.

7. Take Part in Cambodian New Year Celebrations

April marks the traditional Cambodian New Year (Chaul Chnam Thmey), a three-day festival that involves colorful processions, traditional dance, and festive celebrations. It’s a great cultural experience for visitors to take part in or observe the festivities and customs that celebrate the start of the new year.