Cambodia weather in January is typically part of the country's dry season, offering mostly clear skies, warm daytime temperatures and relatively little rain. Travelers planning temple visits, coastal stays or upland treks usually find conditions favourable, though this month also attracts the most visitors to popular sites.
What Cambodia weather in January looks like
January falls within the dry season that generally runs from November through April, so rainfall is at one of the year's lowest points. Across the country daytime temperatures commonly range between the high teens and low thirties Celsius, while humidity is lower than in the wet months, making outdoor activities more comfortable for most people.
National averages for January show daytime highs around 31–32°C and overnight lows near 19–20°C. Rain is scarce: many places record only a few millimetres for the month and the number of rainy days is usually minimal. Sea conditions along the southern coast tend to be warm and calm, supporting swimming and water sports.
Key features and regional highlights
Weather differs noticeably by region. The central plains, where Phnom Penh and Angkor are located, typically see warm, dry days and cooler mornings and evenings—ideal for long walks around temple complexes. The coastal strip has slightly lower daytime temperatures and warm sea water, which attracts travelers looking for beach time.
Northern and eastern highlands such as Ratanakiri and Mondulkiri have milder daytime heat and cooler nights; improved road conditions in January often make visits and adventure activities easier than during the rains. On the other hand, some northern river towns report extremely low rainfall during this month, while busy beach towns can receive a little more precipitation though still below wet-season levels.
- Dry, sunny days with cooler nights compared with the wet season.
- Beach waters are warm—suitable for swimming and snorkelling.
- Peak visitor numbers in popular destinations, especially coast and Angkor.
Practical tips for travelling in January
Because January is part of the high season, book flights and accommodation early if you have fixed dates or specific hotels in mind. Peak demand can make last-minute reservations harder to secure, particularly near major attractions and on popular beaches.
Packing choices should match warm daytime temperatures and cooler mornings. Lightweight, breathable clothing works for most daytime activities; bring a light layer for early starts at temples or evenings in the highlands. Sunscreen, a hat and plenty of water are practical essentials for all outdoor plans.
- Clothing: light cottons, a long-sleeve sun shirt and a light sweater for early mornings.
- Sun protection: sunscreen, sunglasses, and a wide-brim hat.
- Hydration: carry a refillable water bottle and seek shade during midday heat.
- Bookings: reserve accommodation and tours in advance during the peak month.
Cultural context and events in January
January often coincides with a range of local gatherings and religious observances; several traditional celebrations take place around this time. Visitors report that festival activity and market stalls can add cultural interest to temple visits and city stays, though crowds at popular sites increase accordingly.
When planning visits to historic sites, allow for early starts if you want to avoid the busiest periods and the warmest hours. Local customs and dress codes apply at religious sites—dress modestly and follow any site-specific guidance handed out by caretakers or guides.
- Expect more visitors at major temples and coastal resorts—plan for queues and limited availability.
- Respect local dress expectations at pagodas and in rural communities.
- Check local calendars if you want to watch traditional ceremonies or avoid particularly crowded days.
Who benefits most from visiting in January
January suits travelers who prioritise reliably dry weather for sightseeing, beach time or outdoor activities such as day treks and wildlife viewing. Photographers and early-risers often prefer this month for temple sunrises and long, clear days.
However, those seeking solitude or the lowest possible prices may prefer off-peak months; high-season demand tends to push up room rates and fill guided tours. Families, independent explorers and beachgoers generally find January well suited to their needs thanks to stable conditions.
Comparisons: regional conditions in January
Different parts of Cambodia show distinct January patterns. Coastal towns have slightly lower maximums and warm sea temperatures, while inland temple areas feel hotter during midday but pleasantly cool in the mornings. Remote highland zones offer a break from lowland heat and are easier to reach because roads are drier.
For a quick overview, the table below compares typical January conditions and activities by region.
| Region | Typical daytime high | Typical nighttime low | January rainfall | Sea temp / activity |
|---|---|---|---|---|
| Central plains (Angkor area) | Around 31–32°C | About 19–20°C | Low | Temple sightseeing; early starts advised |
| Coastal (Sihanoukville, southern beaches) | Mid to high 20s°C | Low 20s°C | Moderate in some spots (coastal towns can have slightly higher totals) | Sea ~28°C; swimming and snorkelling |
| Northern river towns (Stung Treng area) | High 20s–low 30s°C | High teens–low 20s°C | Very low (some reporting only a couple of mm) | River excursions and dry-season river levels |
| Highlands (Ratanakiri, Mondulkiri) | Warm but milder than lowlands | Cooler nights | Low; roads generally easier to navigate | Trekking and wildlife activities |
Frequently Asked Questions
Is January a good month to visit Cambodia?
Yes. January is within the dry season, with limited rainfall and pleasant mornings, which makes it suitable for temple visits, beach trips and outdoor excursions. Expect higher visitor numbers at major attractions.
Will I need rain gear in January?
Rain is uncommon in January, but a light packable jacket or windbreaker can be useful for unexpected showers or cooler early-morning starts. Most travellers find heavy rain gear unnecessary for this month.
Can I swim in the sea in January?
Coastal waters in southern Cambodia are generally warm in January—around the high 20s Celsius—so swimming and snorkelling are usually comfortable and safe when the local conditions are normal.
How crowded are temples and beaches in January?
January is part of the peak season, so beaches and major temple sites can be busy, especially at sunrise and sunset times. Booking tours or accommodations ahead is advisable to avoid disappointment.
Where can I read more about Cambodia's architecture and historic sites?
For guidance on temple styles, visiting etiquette and site-specific tips, see this resource on Khmer architecture.
For regional weather comparisons or to coordinate travel across borders, some travellers look at nearby city climate guides; for example, comparisons with surrounding capitals can be helpful when planning multi-country itineraries—see a related overview of Phnom Penh weather for a seasonal perspective.