Adapting to Cambodia’s Local Climate: A Practical Guide for Expats

Published on May 5, 2026 and written by Cyril Jarnias

Moving to Cambodia means accepting two realities at once: a warm, inexpensive country with a welcoming population… and a climate that never takes a break. Heat, humidity, intense rains, pollution episodes, health risks from mosquitoes or water: for an expat, living well here first requires a good strategy for adapting to the climate.

Good to know:

This guide provides practical benchmarks for understanding the local weather, organizing daily life, choosing suitable housing, protecting yourself (as well as your loved ones and your devices), and maintaining mental balance in a sometimes challenging environment.

Understanding the Cambodian Climate to Better Tame It

Cambodia has a tropical monsoon climate, hot and humid year-round, with no “winter” in the European sense. Two main seasons structure daily life: a dry season and a rainy season, with several nuances within each that matter a lot in how you organize yourself.

Seasons, Temperatures, and Rains: The Basic Framework

The dry season generally lasts from November to April. It breaks down into a relatively “cool” period and a very hot period:

– From November to February, the air is less heavy, humidity drops, and nights are more pleasant. In Phnom Penh, for example, temperatures hover around 21–32 °C. For a newly arrived expat, this is the most comfortable window for acclimatization.

– From March to April, the heat rises sharply. April is on average the hottest month, with daily peaks around 35 °C, and spikes that can reach or exceed 40 °C in the interior plains.

75-90

This is the percentage of annual rainfall that occurs during the rainy season, from May to October.

On average, the country receives around 2,000 mm of rain per year, but with strong regional differences: the southwestern coast and the Cardamom Mountains can exceed 4,000 to 5,000 mm, while the great central plains average around 1,300–1,400 mm.

A simplified overview by major zones illustrates these contrasts:

Climate Zone (RIMES/UNDP study)	Examples of Provinces / Cities	Average Annual Rainfall Level	Specifics for Expats
Southwest / Coastal (Zone 1)	Koh Kong, Preah Sihanouk, Kampot	~1,931–4,201 mm and more	Very humid, heavy rains, cooler air by the sea
Northwest (Zone 2)	Pailin, Battambang, Banteay Meanchey	~1,079–1,294 mm	More pronounced dry season, fairly strong daytime heat
North Central (Zone 3)	Siem Reap	~1,520 mm	Climate close to Phnom Penh, slightly heavier rains
Central Plains (Zone 4)	Pursat, Kampong Thom, Kampong Cham	~1,135–1,468 mm	Clear dry/rainy alternation, flood risks near the Mekong
South-Central (Zone 5)	Phnom Penh, Kandal, Prey Veng, Takeo	~1,261 mm	High heat, very heavy air in the rainy season
Southeast (Zone 6)	Svay Rieng	~1,689 mm	Sustained rains, high humidity
Northeast (Zone 7)	Stung Treng	~1,891 mm	More rural climate, limited healthcare access

For the expat, these numbers are not just theoretical: they affect quality of life, transportation, road conditions, but also health risks (mosquitoes, contaminated water, diarrheal diseases, etc.).

What Changes from One Region to Another

The country is also divided by topography:

Example:

The climate of Cambodia shows notable variations by region. The central plains, like Phnom Penh, experience intense heat in the dry season and heavy but more ‘manageable’ rains than elsewhere, with flood risks near the Mekong at the end of the monsoon. The southern coast, including Sihanoukville, enjoys somewhat cooler air but endures extreme humidity and the country’s heaviest rains from July to September. The eastern highlands, such as Mondulkiri, offer cooler temperatures, especially at night, but access is complicated by deteriorating roads during the rainy season.

In cities popular with expats, the perception of the climate is slightly different:

Town / Region	Typical Climate Feel	Points of Attention for Expats
Phnom Penh	Almost permanent heavy heat, sometimes stifling nights	Pollution, urban heat islands, occasional floods, difficult traffic in the rain
Siem Reap	Climate similar to Phnom Penh, a bit more bearable in “winter”	High humidity around Angkor, sudden rains during temple visits
Sihanoukville / islands	Pleasant sea air, but very humid and windy monsoon	Limited healthcare, roads in poor condition in rainy season, more frequent power cuts
Kampot / Kep	Heat tempered by sea breeze and nearby mountains	Roads to Bokor and the countryside more difficult during heavy rains
Mondulkiri	Cooler, especially at night; marked sun/rain alternation	Difficult access in rainy season, limited infrastructure

Understanding these nuances already allows you to choose your place of residence based on your heat tolerance and priorities (health, remote work, family life, etc.).

Dressing and Equipping Yourself: The First Barrier Against Heat and Humidity

In Cambodia, how you dress is not just a matter of style: it is a key element of your health and cultural integration.

Fabrics, Cuts, and Classic Mistakes to Avoid

In a hot, humid climate, the goal is twofold: let your skin breathe while protecting it from the sun and insects. Recommendations from health professionals and seasoned travelers are very consistent:

For temples (Angkor Wat, pagodas, Royal Palace), the rule is strict: shoulders and knees covered, for everyone, and scarves alone are not always accepted. Having a dedicated “temple” outfit in your expat wardrobe avoids many unpleasant surprises.

Really Useful Shoes and Accessories

Broken sidewalks, mud, puddles, and slippery steps are part of the landscape. The most common recommendations:

– A pair of comfortable sneakers or walking shoes, for sightseeing days, markets, and walking trips.

– Sturdy sandals that can handle water (rain, puddles) without deforming, ideally with a backstrap so you don’t lose them in the mud.

– Cheap flip-flops, very practical for home, showers, and short trips in the rain.

Accessories that make a difference:

Bags, Organization, and Small Anti-Rain Tools

Monsoon downpours show no mercy to computers and papers. To not live in fear of every shower:

– Choose a backpack with a waterproof cover or a water-repellent duffel-type bag.

– Use zip-lock bags and waterproof pouches for passports, phones, important documents.

– Carry a microfiber towel: ideal for drying off after rain or sweat, dries quickly, weighs nothing.

– Bring a power bank and, if possible, a small headlamp for the frequent power cuts in some areas.

Hydration, Food, and Health: Surviving the Heat Day-to-Day

In a country where the thermometer regularly flirts with 35–40 °C and where humidity often exceeds 80%, dehydration and digestive illnesses are by far the most common problems for newcomers.

Drink a Lot… But Not Just Anyhow

Tap water is unsafe to drink, even in big cities. Authorities treat the water (often with chlorine), but the networks and storage do not guarantee the absence of bacteria or parasites.

Basic rules:

– Drink only:

– bottled water with an intact seal,

– or boiled water (1 to 3 minutes of boiling),

– or water filtered with a serious filter (pore ≤ 0.2 micron), ideally boiled afterward.

– Use this same water for brushing your teeth.

– Avoid ice cubes of unknown origin, especially in small restaurants.

– Take advantage of filtered water stations increasingly offered by hotels, cafes, or coworking spaces, by refilling a reusable bottle.

During an ordinary day, reaching several liters of water is not excessive. To compensate for mineral salt loss through sweat, oral rehydration solutions, slightly salty drinks, or fresh coconut water are good allies.

Eating Without Getting Sick

Cambodian street food is cheap and often excellent, but it comes with a real risk of digestive infections (diarrhea, salmonella, parasites…).

Principles of caution, without falling into paranoia:

– Favor stalls and restaurants frequented by locals: high turnover limits the risk of food sitting around.

– Ask, if possible, for dishes to be cooked to order and served very hot.

– Avoid:

– raw vegetables and salads washed in tap water,

– unpeeled fruits unless you peel them yourself,

– raw or undercooked meats, fish, eggs,

– fresh juices and smoothies with ice of uncertain origin.

– Favor:

– well-cooked dishes served steaming hot,

– fruits you can peel yourself (bananas, mangoes, pineapples…),

– pasteurized milk and dairy products.

Mosquitoes, Tropical Diseases, and Hygiene

The hot, humid climate is ideal for mosquitoes that transmit dengue, sometimes malaria in certain forested areas, but also Zika or chikungunya.

For an expat, prevention relies on a combination of methods:

– Strong repellent on exposed skin, to be reapplied regularly.

– Long clothing in the evening, especially in rural or wooded areas.

– Mosquito net (often provided in accommodations outside major cities).

– Choosing housing with window screens or air conditioning, which reduces mosquito presence in the room.

Regarding hygiene, the basics remain very effective:

– Frequent hand washing with water and soap, or hand sanitizer if needed.

– Caution with water: do not swallow shower water, avoid questionable basins, never drink tap water.

– Quick disinfection of minor wounds to prevent skin infections that thrive in humid climates.

Managing Extreme Heat and the Rainy Season Well

Adapting to the Cambodian climate is first and foremost about learning to organize your schedule according to the weather, and to take advantage of what each season offers best.

Adapting Your Days to the Heat

The body takes about ten days to truly get used to a new very hot and humid climate. During this phase, it’s better to take it easy:

Long-term expats adopt a kind of “tropical rhythm”: more active life in the morning and evening, accepted slowness in the middle of the day.

Making the Monsoon an Asset Rather Than a Constraint

From May to October, many foreigners imagine constant rain. In reality, it’s most often heavy downpours lasting one to two hours, often in the late afternoon. This changes life if you organize yourself intelligently:

The upside of the monsoon: the country turns green, the rice fields are beautiful, lakes and rivers swell, and tourist traffic decreases – which can be very appreciated for an expat visiting the country.

Choosing Housing Adapted to the Climate

One of Cambodia’s advantages for expats is the relatively low cost of rent compared to many Asian capitals. This allows, with a reasonable budget, to aim for housing better adapted to the heat.

Climate, Neighborhood, and Type of Housing

In Phnom Penh as in Siem Reap, you can find everything: simple studios with just a fan, luxury condos with full air conditioning, villas with gardens, etc. Keeping the climate in mind, certain criteria become priorities:

Rents remain generally affordable, with significant variations depending on the neighborhood and comfort level. In Phnom Penh, for example:

Phnom Penh Neighborhood	Common Housing Type	Approximate Monthly Rent Range	Climate Points to Consider
BKK1	Modern condos, full air conditioning	600–1,000+ USD (1–2 bedrooms)	High comfort, but a lot of concrete and urban heat
Riverside / Daun Penh	Older apartments, studios, condos	400–800 USD	More ventilated riverside, but sometimes flooded areas and very exposed to sun
Toul Tompoung	Small buildings, studios, apartments	300–700 USD	Lively neighborhood, some older buildings with natural ventilation
Tonle Bassac	New residences, high-end	800–1,500+ USD	Air conditioning everywhere, pool, but high electricity consumption
Toul Kork / outskirts	Villas, family houses	highly variable, often interesting	Gardens, more vegetation, better air circulation

In the provinces, the equation changes: in Kampot or Kep, renting a simple place can cost 150 USD per month, with the advantage of a greener environment, but sometimes less reliable electrical installations and more frequent power cuts, especially during storms.

Electricity, Air Conditioning, and Budget

Electricity is significantly more expensive than in Europe relative to the local income level, and it’s the expense that surprises new expats the most. Air conditioning is the main culprit.

Some practical benchmarks:

– The rate is around 0.25 USD per kWh.

– A well-insulated apartment, with AC mainly at night, can get by with a reasonable bill.

– An all-glass residence, AC cranked to 20 °C continuously, can blow up the monthly bill.

To find a balance between comfort and budget:

Some local real estate agencies highlight properties equipped with inverter air conditioners, more economical and more effective at dehumidifying the air. This is a criterion to look for during visits.

Details to Check Before Signing

During visits, think “climate” as much as “decor”:

– Test the water pressure (shower, toilet, sink): in a hot climate, having to fight for a decent shower can quickly become unbearable.

– Check the Wi-Fi speed, especially if you plan to work remotely (humidity and building materials can sometimes disrupt the signal).

– Observe the neighborhood noise: roosters, pagodas, construction sites, bars… In the heat, sleeping poorly isn’t just a nuisance, it’s a health factor.

– Inquire about the frequency of power cuts in the neighborhood and the possible existence of a generator in the building.

Standard leases last 6 to 12 months, with one month’s rent as a security deposit and one month paid in advance. Negotiation is expected and remains common.

Health, Climate, and the Medical System: Being Prepared Without Panic

The Cambodian climate doesn’t just impact well-being, it worsens or transforms certain health risks. In a country where the healthcare system remains fragile, anticipation is essential for an expat.

Effects of Heat and Climate on Health

Health authorities and international organizations already note clear consequences of climate change in Cambodia:

– Rising average temperatures over the decades, with an increase in extreme heat episodes.

– Less predictable rains, alternation of drought periods and torrential rains.

– Floods that damage health infrastructure and disrupt drinking water distribution.

– Increase in diarrheal diseases, vector-borne diseases (dengue, malaria in some areas), and episodes of malnutrition during prolonged droughts or floods.

For an expat, this translates into: adaptation to a new country, managing distance from family and friends, and understanding cultural differences.

Preparing Your Arrival: Vaccines, Medical Kit, Insurance

Before departure, recommendations converge:

– Check and update your basic vaccines (tetanus, diphtheria, polio, pertussis, measles-mumps-rubella).

– Discuss with a doctor or specialized vaccination center about vaccines suitable for the stay: hepatitis A and B, typhoid, rabies, Japanese encephalitis, depending on duration, lifestyle, and areas visited.

– Prepare a basic kit: antipyretic, antidiarrheal, antiseptic, bandages, rehydration salts, usual personal medication with prescription.

– Subscribe to an international health insurance covering:

– care in private clinics and hospitals,

– emergency evacuation to Bangkok or Singapore if needed,

– possibly a return to the home country.

Major cities like Phnom Penh and Siem Reap have decent private clinics, with English-speaking staff. But for serious cases, the international standard is often sought outside the country, hence the importance of good coverage.

Mental Health and “Climate Fatigue”

People talk a lot about dengue or diarrhea, less about mental fatigue related to the climate. Yet, living permanently in heat, intense light, the noise of rains, and sometimes the fear of natural disasters (floods, storms) affects morale:

For an expat, a few strategies really help:

– Structure your daily life (regular hours, breaks, cool moments).

– Stay physically active as much as possible (walking early morning, yoga, swimming).

– Avoid isolation: join expat or local communities, share your difficulties, exchange adaptation tips.

– Do not hesitate to consult a mental health professional, local or via teleconsultation, if anxiety or fatigue become too heavy.

Getting Around, Working, and Living Day-to-Day in This Climate

Adaptation to the climate isn’t just about home. It also conditions how you get around, work, and organize your social or family activities.

Transport and Weather: Anticipate to Avoid Suffering

In Cambodia, the main daily means of transport are:

– Tuk-tuk and moto-taxis, often booked via apps like PassApp or Grab.

– Personal scooters and motorcycles, rented or purchased.

– Buses, vans, and sometimes trains for intercity travel.

In a tropical climate, certain reflexes make life easier:

Remote Work, Air-Conditioned Offices, and Thermal Shocks

Many expats settle in Cambodia as digital nomads or remote workers. The good news: many cafes and coworking spaces are air-conditioned, with decent Wi-Fi.

But the alternation between outdoor heat / very cold air conditioning can be hard on the body:

– Carry a light jacket or scarf in air-conditioned offices, buses, or malls, where the temperature can drop well below 24 °C.

– Avoid sudden transitions (going out into full sun after several hours in a freezing room) and, if possible, spend a few minutes in an intermediate area (lobby, covered terrace).

Taking Care of Your Devices, Your Pets, and Your Environment

Heat and humidity don’t just impact humans: electronic devices, pets, and even your home also suffer from the climate.

Electronics and Humidity: Invisible Corrosion

Air saturated with humidity, sometimes with salt (by the sea), is a silent enemy of electronic circuits:

– Keep devices away from windows, kitchen steam, and poorly sealed gutters.

– Regularly use silica gel packets in drawers or bags containing sensitive equipment (camera, hard drives, computer).

– Avoid leaving laptops and phones locked in a car in the sun: the interior temperature can rise to levels destructive to batteries.

Pets and Heat

Dogs and cats also suffer from the heat and humidity:

– Never leave an animal in a parked car, even for a few minutes.

– Limit walks to the coolest hours, early morning or evening.

– Ensure they always have access to fresh water and shade.

– Watch for signs of heatstroke (intense panting, weakness, very red gums) and consult urgently if in doubt.

Veterinarians are more numerous in big cities, but rare in rural areas. Again, anticipation (vaccines, anti-parasitics, identifying a reliable clinic) is essential.

Integrating Local Culture: Climate, Attire, and Behaviors

The climate also influences dress codes and habits of Cambodians, and understanding these customs allows for better integration.

Adopting these codes not only facilitates integration but also limits sunburns and insect bites.

Adapting to the Cambodian Climate: A Long-Term Strategy

Living in Cambodia isn’t just about enduring a difficult climate, it’s about learning to work with it. A few strong ideas emerge:

In return, Cambodia offers the expat a favorable cost of living, a welcoming population, spectacular nature – especially in the rainy season when the country turns green – and the possibility to easily explore all of Southeast Asia.

Well-prepared and well-informed, you don’t just “survive” the Cambodian climate: you learn to live with it, and sometimes even to love it.