Best Time to Visit Vietnam and Cambodia

Vietnam and Cambodia are land neighbors with convenient land and air travel, making them ideal for combined travel. November to April is the dry season in both countries, with pleasant, dry weather, making it the perfect time for a joint trip. The two countries share similar cultures and complementary scenery. Vietnam boasts coastlines, French-style towns, and local cuisine, while Cambodia is home to Angkor Wat and pristine lakeside villages. With similar visa processes, affordable prices, and similar culinary preferences, a single long holiday can seamlessly connect the two itineraries, combining relaxation and cultural exploration, making travel planning and costs more economical.

Table of Contents

Vietnam

1. Northern Vietnam

2. Central Vietnam

3. Southern Vietnam

4.Festivals 
 

Cambodia

1. Northwest Inland Region

2. Central Plains and River Region

3. Southern Coastal and Island Region

4.Festivals in Cambodia

Vietnam 

Due to its narrow, elongated terrain, Vietnam is clearly divided into three distinct climate zones.

1. Northern Vietnam (Hanoi, Halong Bay, Sapa)

Terrain
Dominates by high mountains hills and river deltas. The Red River Delta lies in the lowland center. Mountain ranges stretch along the northern and western borders with steep slopes and dense forests. Terraced fields are widely seen in mountainous areas. The terrain is uneven with obvious altitude differences.

Climate
Subtropical monsoon climate. Four distinct seasons all year round. Winter is cool and humid with occasional cold spells. Summer is hot and rainy. Rainfall concentrates from May to October. The temperature varies greatly between mountain tops and lowlands.
 

• March–April (Spring) & September–November (Fall): Peak travel season. Temperatures range from 20°C to 28°C, with clear skies and comfortable humidity. September and October mark the harvest season when Sapa’s terraced fields turn golden, making it the best time for hiking and cruising Halong Bay.
• May–August (Summer): Extremely hot with heavy rains and typhoons; Halong Bay cruises are occasionally suspended due to typhoons.
• December–February (Winter): Temperatures drop to 10°C–20°C; Hanoi is often overcast and foggy, while the mountainous regions of Sapa are very cold.

2. Central Vietnam (Da Nang, Hoi An, Hue, Nha Trang)

Terrain
Long narrow coastal strip sandwiched between the Truong Son Mountains and the South China Sea. Narrow coastal plains run from north to south. There are many capes bays and sandy beaches. Hills and rocky lands are scattered near the mountains. Terrain changes sharply from mountains to sea in a short distance.

Climate
Tropical monsoon climate with regional differences. The north central area has heavy rainfall from September to December and frequent seasonal rains. The south central part is hot all year round with less rainfall. Strong winds and occasional tropical cyclones affect coastal areas.
 

• February – August: Peak travel season. Ideal for beach vacations. February–May is the most comfortable (25°C–30°C) with sunny weather; June–August becomes hot (up to 35°C), but the water is crystal clear, making it an excellent time to visit My Khe Beach in Da Nang or go diving in Nha Trang.

• September–January (rainy season/typhoon season): Strongly not recommended. Especially in October and November, central and southern Vietnam are frequently hit by typhoons, bringing torrential rains. The ancient town of Hoi An may even experience flooding, with streets turning into rivers.

3. Southern Vietnam (Ho Chi Minh City, Mekong Delta, Phu Quoc Island)

Terrain
Mainly flat alluvial plains formed by the Mekong River Delta. The land is low and vast with crisscross rivers canals and wetlands. A small number of low hills distribute in the far southeast. The whole region has gentle terrain with almost no high mountains.

Climate
Tropical savanna monsoon climate. Only two obvious seasons dry season and rainy season. Dry season lasts from November to April with sunny days and comfortable humidity. Rainy season comes from May to October featuring frequent short heavy showers. The temperature stays hot and stable all year long.
 

• November – April (Dry Season): The peak travel season. The weather is sunny, and the air is crisp. Especially from December to February, temperatures hover around 30°C without feeling muggy; water visibility is at its best in Phu Quoc, and the scenery along the Mekong River is at its finest.
• May–October (Rainy Season): High temperatures and high humidity. However, rain in Southern Vietnam is mostly in the form of afternoon thunderstorms that come and go quickly (lasting 1–2 hours before stopping). While travel is not completely impossible, it may affect outdoor itineraries.

4.Festivals in Vietnam
Tet Nguyen Dan Lunar New Year falls in late January to early February. It is Vietnam’s biggest holiday featuring family reunions ancestor worship peach blossoms kumquat trees lion dances and fireworks

Tet Trung Thu Mid Autumn Festival comes in mid September. Also known as the Children’s Festival it includes lantern parades lion dances and mooncakes. The whole street is lit up and Hoi An presents a particularly wonderful view

Gio To Hung Vuong Hung Kings’ Festival is held in early April. People gather for national ancestor commemoration at Hung Temple with large scale pilgrimages and traditional rituals
Perfume Pagoda Festival takes place from February to April. It is a time honored Buddhist pilgrimage. Visitors can take boat rides through limestone mountains to reach sacred caves
Oóc Om Bóc Khmer Moon Festival arrives in early December. Ethnic Khmer people in the Mekong Delta hold celebrations to thank the moon god along with feasting and boat races
 

Is Tet a good time to visit Vietnam？
Short answer Yes if you plan carefully

Pros
You can experience authentic local culture and witness unique family traditions flower markets and lively street celebrations that you can hardly see at other times. The whole country is filled with festive vibes. Cities are beautifully decorated and fireworks light up the sky while locals stay cheerful. Streets become less crowded in daytime as most families stay at home perfect for sightseeing and taking photos

Cons
Prices of hotels tours and transport rise sharply to 1.5 to 3 times the usual rate. Popular accommodations and tickets sell out quickly. Plenty of local restaurants shops and daily services close for three to seven days so choices for dining and shopping are limited. Domestic flights trains and buses get extremely crowded. Remember to book all tickets and rooms four to six weeks in advance

Useful tips
The period one to two weeks before Tet is highly recommended. You can enjoy strong festive atmosphere fully open businesses and bustling flower markets. It is better to avoid the first three days of Tet due to widespread service closures soaring prices and little outdoor activity among locals. Hoi An and Ho Chi Minh City are more tourist friendly choices during Tet compared with Hanoi

Cambodia

1. Northwest Inland Region (Siem Reap / Angkor Wat)

Terrain
This area features rolling hills and low mountain ranges. The famous Tonle Sap Lake and vast surrounding wetlands occupy a large part of the land. There are extensive forest areas and scattered rural farmlands. The terrain slopes gently from highlands towards the lake basin.

Climate
Tropical monsoon climate. It has clear dry and rainy seasons. The dry season brings warm temperatures and little rainfall. Heavy rain falls regularly in the rainy season. Humidity stays high all year round near the lake and wetlands.
 

• November – February (Cool Dry Season – Best Travel Period): Temperatures range from approximately 24°C to 30°C. Skies are clear, with a cool breeze in the early mornings and evenings. This is the absolute golden period for visiting Angkor Wat, photographing the sunrise at Bayon Temple, and climbing Phnom Bakheng for sunset views—though it's also the busiest time of year for tourists.  
• March – April (Hot Dry Season – Strongly Discouraged for Outdoor Activities): Temperatures soar above 35°C to 40°C. The air is extremely dry and sweltering; walking through the open stone structures of Angkor without shade can easily lead to heatstroke. Mid-April coincides with Cambodia’s traditional New Year (Chhnam Thmey), featuring vibrant cultural festivities, but the weather is intensely hot.  
• May – October (Rainy Season – Green Season Landscape): Temperatures drop to around 30°C. Afternoons often bring heavy rain showers, which wash the stones of Angkor Wat, leaving them dark and glossy with patches of moss. The moats and surrounding jungle come alive with lush greenery, making photography exceptionally scenic. This period sees fewer tourists and offers excellent value for hotel accommodations.

2. Central Plains and River Region (Phnom Penh / Tonle Sap Lake / Matir)  Terrain
Terrain
Mostly wide and flat alluvial plains. The land is fertile and covered with large rice fields. The Mekong River runs through this region with many branching waterways. Terrains are largely level with no prominent high mountains. Small mounds and pagoda hills can be seen across the plains.

Climate
Typical tropical monsoon climate. Days are hot throughout the year. The dry season runs from November to April with plenty of sunshine. The rainy season starts in May and lasts until October with sudden afternoon downpours. Temperature changes slightly all year round.
 

• November – February (Dry Season – Comfortable Period): Temperatures range from 26°C to 32°C. Phnom Penh enjoys abundant sunshine, making it ideal for walking tours of the Royal Palace and Independence Monument. At this time, Tonle Sap Lake is at its highest water level (just after the rainy season), offering spectacular views of floating villages in Kompot or Vietnamese floating settlements. November also marks the grand "Water Festival," featuring thrilling dragon boat races.  
• March – May (Hot Season – Humid and Dry): Temperatures soar, with a pronounced urban heat island effect. Prolonged dry spells cause Tonle Sap Lake to shrink, disrupting water transport and making visits to floating villages unadvisable.  
• June – October (Rainy Season – High Water Period): July, August, and September bring peak rainfall. Heavy rains cause reverse flow from the Mekong River into Tonle Sap Lake, expanding its surface area several times over. Occasional localized flooding occurs in Phnom Penh, but air typically becomes refreshingly clear after evening showers.

3. Southern Coastal and Island Region (Sihanoukville / Koh Rong / Kampot /白马)  
Terrain
Coastal lowlands combine with forested highlands. Long coastlines are lined with sandy beaches and natural bays. Dense tropical rainforests grow on inland hills. River estuaries and mangrove swamps spread along the shore. The terrain alternates between coastal flatlands and inland hills.

Climate
Tropical monsoon climate influenced by sea winds. It is hot and humid all year long. Rainfall is more abundant than inland areas. Coastal areas enjoy milder heat thanks to sea breezes. Tropical storms occasionally hit the coastline during the rainy season.  
 

• November – April (Dry Season – Ideal for Island Escapes): Temperatures range from 25°C to 32°C. Sea visibility reaches its annual peak, and conditions are calm and serene. This is the perfect time to visit Koh Rong and Koh Rong Samloem for diving, snorkeling, and relaxation. Kampot’s pepper plantations and白马’s crab markets are also at their most enjoyable for food lovers.  
• May – October (Rainy/Typhoon Season – Strongly Discouraged for Sea Travel): This region experiences Cambodia’s heaviest rainfall. Particularly in August and September, sea conditions become extremely rough, often forcing ferry services to Koh Rong to suspend operations due to safety concerns. Most island resorts close down, seawater turns murky, and all water-based activities become unsuitable.

4.Festivals in Cambodia
Chaul Chnam Thmey Khmer New Year takes place from April 13 to 15. It is Cambodia’s most important festival marking the end of harvest. Locals clean houses visit pagodas make offerings splash water for blessings and join various traditional games and performances

Pchum Ben Ancestors Day falls between September and October. This fifteen day religious event focuses on ancestor worship. People go to temples deliver food offerings and build sand stupas to pray for departed family members. The whole atmosphere is solemn and peaceful

Bon Om Touk Water Festival is held in October or November. It celebrates the reverse flow of the Tonle Sap River and ancient military victories. Grand dragon boat races firework shows and riverside parties are held across the country especially in Phnom Penh

Royal Ploughing Ceremony arrives in early May. This royal ritual prays for good harvest. People watch traditional ploughing performances and predict crop yields according to the behavior of sacrificial oxen

Visak Bochea Buddha Day is celebrated in May. Devotees gather at pagodas for candlelit ceremonies prayers and religious parades to honor the birth enlightenment and nirvana of Buddha
 

Is Khmer New Year a good time to visit Cambodia？
Short answer Yes if you make thorough preparations

Pros
You can experience the most authentic Khmer traditions and lively festive scenes. Temples and streets are full of cultural activities including folk dances traditional games and water blessing rituals. The weather is generally pleasant and locals are warm and welcoming to foreign visitors

Cons
Hotel rooms transportation and local tours see obvious price increases and popular accommodations sell out quickly. A large number of small shops restaurants and local services close temporarily. Many residents return to hometowns so some city areas look quiet. The major scenic spots like Angkor Wat also get crowded during this period

Useful tips
Book accommodation and transport at least one month in advance. Focus on visiting pagodas and joining local cultural activities instead of arranging tight cross city trips. Siem Reap and Phnom Penh remain relatively tourist friendly during the festival. It is wise to avoid remote rural areas where most services are suspended