Things to Do in Southeast Asia in December
December weather, activities, events & insider tips
High Season · Book Early
December Weather in Southeast Asia
Temperature, rainfall and humidity at a glance
87°F (31°C)
High Temp
69°F (21°C)
Low Temp
2.0 inches (51 mm)
Rainfall
70%
Humidity
Is December Right for You?
Weigh the advantages and considerations before booking
Advantages
- + December flips the switch to dry across Thailand, Vietnam, Cambodia. Blue skies return; Angkor Wat's stones glow for cameras, no November mud to dodge. Temple photography finally gets easy. Pack wide-angle lens.
- + Southern Thailand peaks now. Andaman Sea paints itself postcard turquoise. Dive masks reveal 30 m (98 ft) of liquid air. Visibility feels almost fake. Bring GoPro.
- + Northern Vietnam's rice terraces blaze gold. Sapa and Mu Cang Chai harvest mid-December; photographers call it the money shot week. One week only.
- + Manila and Singapore fake winter. Foam snow drifts over bibingka stalls while thermometers read 30°C (86°F). Surreal, sweet, slightly sweaty.
Considerations
- − December 20 to January 5 prices leap 40-60 %. November's cheap bungalow now demands serious cash. Budget accordingly.
- − Chinese Golden Week hits early December. Selfie sticks colonise every temple angle and patch of sand. Patience required.
- − Sapa and Ha Giang nights sink to 10°C (50°F). That summer packing list suddenly needs a sweater. Buy one there.
Best Activities in December
Top things to do during your visit
Similan Islands Liveaboard Diving
December 15 unlocks the Similan Islands. Water clarity jumps to 30 m (98 ft); manta rays cruise Koh Bon again. Seven am dives stay flat calm before afternoon wind stirs the surface. Nine islands shut half the year, so December access feels like a private key.
Booking Tip: Liveaboards sell out fast. Book 3-4 weeks ahead through licensed operators; Europeans flee winter in droves. Demand PADI 5-star rating, working radios, full insurance.
Angkor Wat Sunrise Bicycle Tours
Dry December dawns let you pedal Angkor Wat at 5:30 am without splashing through monsoon puddles. Lotus pond mirrors sunrise every morning. No clouds photobomb your Instagram. Cool air keeps shirts dry past 7 am.
Booking Tip: Guesthouses and Pub Street rent bikes. Test gears and brakes before handing over cash. Sunrise loops roll back by 9 am, ahead of the swarm.
Mekong River Slow Boat Journeys
Mekong water drops in December. Sandbanks emerge; 4000 Islands show their bones between Don Det and Don Khon. The slow boat from Huay Xai to Luang Prabang turns into a floating balcony for rice-harvest villages.
Booking Tip: Pick boats with life jackets and shade. December sun bounces hard off water. Buy tickets at Huay Xai pier, not through guesthouse touts who stack commissions.
Chiang Mai Night Bazaar Food Walks
Evenings settle at 24°C (75°F). You can finally savour spicy khao soi without melting. Sunday Walking Street stretches 1.5 km (0.9 miles) through the old city, grilling sai ua and slicing mango sticky rice.
Booking Tip: Food tours kick off at 6 pm, last 3-4 hours. Wear soft shoes and pocket antacids. The best guides were born here. They know the three-generation stalls.
Ha Long Bay Overnight Cruises
Ha Long Bay slips into misty dream mode. Morning fog hugs 1600 limestone karsts, carving floating islands for your lens. Domestic crowds vanish after November. Sunrise decks stay empty.
Booking Tip: Overnight cruises span backpacker barges to luxury junks. Scour reviews for safety logs. December storms scrub 15 % of sailings. Leave wiggle room.
Railay Beach Rock Climbing
Northeast monsoon dries Railay's limestone. Climbers grip rock at 29°C (84°F), not April's 35°C (95°F) scorch. Thaiwand Wall hides in shade until 11 am. Start at 7 am and own the wall.
Booking Tip: Multi-pitch needs licensed guides. Verify UIAGM cards and gear age. Deep-water soloing follows December's lower tides, exposing more routes.
Where to Stay in Southeast Asia in December
Hand-picked hotels across price tiers for December travellers.
December Events & Festivals
What's happening during your visit
Mid December (varies by lunar calendar)
Hmong New Year Festival
Hmong lunar new year lands mid-December. Bullfights, crossbow contests, and boys hurling mak kone cloth balls at girls they fancy fill Sapa's stadium. Indigo coats swirl for three days under rice-wine haze.
Early December (varies by lunar calendar, usually first week)
Cambodia Water Festival (Bon Om Touk)
Phnom Penh's Tonle Sap reverses direction. Longboat races roar for three days. Grilled squid, fried tarantulas, and sugar-cane stands line the banks while fireworks crack overhead.
Packing Checklist
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Climate-specific gear, brand recommendations, and what to leave at home.
View Southeast Asia Packing List →Essential Tips
Insider knowledge and common pitfalls to avoid
Insider Knowledge
Lock in December 20-January 5 beds by September 1. Prices leap 50 % after October 15; decent rooms vanish.
Rice harvest strikes December 10-20. Those golden Sapa terraces you double-tap? Happening now. Book homestays early; Vietnamese tourists increase too.
The 'smoky season' from agricultural burning affects northern Thailand December through March - Chiang Mai's air quality can hit unhealthy levels. Monitor aqicn.org and escape to Pai or Mae Hong Son when readings exceed 150
Island ferry schedules change December 15 when high season officially starts - boats from Phuket to Phi Phi add extra departures. But also add 20% fuel surcharges
Cambodia's ATMs dispense US dollars, not riel - but bring crisp bills because torn or marked notes get rejected everywhere, even for a $2 tuk-tuk ride
Singapore's Christmas decorations go up November 15 along Orchard Road - the light displays are free and spectacular. But avoid weekends when shopping crowds become unbearable
Avoid These Mistakes
Assuming December means 'winter' everywhere - southern Thailand beaches hit 32°C (90°F) and that winter coat you packed becomes dead weight
Booking flights with tight connections through Bangkok in December - afternoon thunderstorms delay 30% of departures, and budget airlines won't rebook you free
Trying to see Angkor Wat at sunrise without buying tickets the day before - the ticket office opens at 5am but sunrise is at 6:15am, creating a queue that stretches 200 meters
Wearing shorts and tank tops to temples - December's cooler mornings make long sleeves comfortable, and proper temple dress (covered shoulders/knees) prevents denied entry
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