Things to Do in Chiang Rai in December
December weather, activities, events & insider tips
December Weather in Chiang Rai
Is December Right for You?
Advantages
- Peak season for weather - mornings start around 15°C (59°F), perfect for temple visits and outdoor activities before it warms to 28°C (82°F) by afternoon. You'll actually want that light jacket you packed for early morning starts.
- Virtually no rain - December averages just 8 mm (0.3 inches) across the entire month, typically one brief shower if any. This is the driest month of the year, meaning you can plan outdoor activities without weather backup plans cluttering your itinerary.
- Festival season hits its stride - the King's Birthday (December 5th) brings city-wide celebrations, and you'll catch the tail end of Loi Krathong lantern season energy. Streets stay decorated, night markets expand their hours, and there's a genuine festive atmosphere that isn't manufactured for tourists.
- Clear mountain air for photography and views - the cool, dry conditions mean visibility at Doi Tung and Phu Chi Fa reaches 30-40 km (18-25 miles) on most days. Sunrise viewpoints actually deliver on their promise, and the White Temple photographs without the hazy backdrop you'd get in hot season.
Considerations
- High season pricing kicks in hard - accommodation rates jump 40-60% compared to rainy season, and popular guesthouses in the old city book out 3-4 weeks ahead. That riverside bungalow that costs ฿800 in September will run you ฿1,400-1,600 in December.
- Chinese tour groups peak during this window - major temples like Wat Rong Khun see busloads arriving between 10am-2pm daily. You'll share the White Temple courtyard with 200+ other visitors during midday hours, which fundamentally changes the experience if you're after contemplative temple time.
- Cool evenings catch unprepared travelers off guard - temperatures drop to 15°C (59°F) after sunset, and most budget accommodations don't have heating. That open-air bungalow you booked for its tropical vibe becomes genuinely chilly by 9pm, and you'll see tourists in convenience stores buying emergency sweatshirts.
Best Activities in December
Sunrise viewpoint drives to Phu Chi Fa and Doi Pha Tang
December offers the year's best conditions for mountain viewpoints - clear skies, low humidity, and that 15°C (59°F) pre-dawn temperature that keeps the mist dramatic but visibility sharp. The 90-minute drive from Chiang Rai to Phu Chi Fa starts around 4am, and you'll want layers because it drops to 10°C (50°F) at the 1,628 m (5,341 ft) summit. The Mekong River views from Doi Pha Tang stretch into Laos without the haze that obscures them April-October. Worth noting that weekends bring Thai tourists up from Bangkok, so weekday visits give you more elbow room at the viewpoints.
Temple circuit cycling in cool morning hours
The 15-18°C (59-64°F) morning temperatures make December ideal for the 25 km (15.5 mile) temple loop that's genuinely miserable in hot season. Start at 7am when Wat Rong Khun opens and you'll beat the tour bus crowds by two hours - the difference between photographing empty courtyards and jostling for space. The route through Wat Rong Suea Ten, Wat Huay Pla Kang, and smaller neighborhood temples stays comfortable until 11am when temperatures climb. Local monks are more engaged with visitors during cool season because they're not heat-exhausted, and you'll actually get conversations rather than polite nods.
Golden Triangle and Mekong River exploration
December's low water levels expose sandbanks and riverside areas that disappear during rainy season, and the clear weather means the 60 km (37 mile) drive from Chiang Rai to the Golden Triangle delivers mountain views the entire way. The Hall of Opium museum works well on warm afternoons when you want air conditioning, and longtail boat rides on the Mekong cost ฿300-400 for 30-minute trips that show you the Thailand-Laos-Myanmar border convergence. The dry conditions mean boats can access smaller tributaries and beach landings that aren't possible June-October.
Hill tribe village visits and highland trekking
Cool, dry December weather makes the 4-8 km (2.5-5 mile) village treks actually pleasant rather than the sweat-soaked slogs they become by March. Villages around Mae Salong and the Doi Tung area sit at 800-1,200 m (2,625-3,937 ft) elevation where temperatures stay 3-5°C (5-9°F) cooler than Chiang Rai city. The tea plantations are harvesting winter crops, so you'll see actual agricultural work rather than just touring empty farms. That said, December brings peak tourist numbers to accessible villages, so consider pushing deeper to lesser-visited Lahu and Akha communities that require longer drives but see fewer visitors.
Night market and street food exploration
December's cool evenings make the 6pm-midnight night market scene genuinely comfortable - you'll actually want to linger over ฿40-80 dishes rather than rushing through to escape the heat. The Saturday Walking Street market expands during high season with 150+ vendors, and the cooler weather brings out better crowds which creates more energy. Food stalls serve hot soups and grilled items that feel appropriate in 18-20°C (64-68°F) evening temperatures, unlike the sweaty proposition they are in hot season. The night bazaar near the bus station runs every evening with a good mix of tourist items and local food that Chiang Rai residents actually eat.
Hot springs and natural areas around Mae Kachan
The 40 km (25 mile) drive to Mae Kachan Hot Springs makes sense in December when the 15°C (59°F) morning air creates actual motivation to soak in 70°C (158°F) thermal pools. The forested area stays cool and comfortable for the short nature walks between pools, and December's dry conditions mean the trails aren't muddy messes. Local Thai families visit on weekends, so weekday trips give you quieter access to the pools. The combination of cool air and hot water that feels gimmicky in April becomes genuinely appealing when you're chilly from a morning motorbike ride.
December Events & Festivals
King's Birthday Celebrations (December 5th)
The late King Bhumibol's birthday remains a significant national holiday with city-wide decorations, evening ceremonies at the provincial hall, and locals wearing yellow shirts in tribute. The main boulevard gets decorated with lights and portraits, and there's a formal evening ceremony around 6pm that's worth observing for cultural context. Government offices and some businesses close, so plan accordingly. The atmosphere is respectful rather than festive party energy.
Chiang Rai Flower Festival
Typically held in late December or early January at the Public Park, this showcases northern Thailand's cool-season blooms with elaborate garden displays, plant sales, and evening light shows. The exact dates shift year to year, so confirm timing closer to your trip. Entry runs ฿50-100, and it's genuinely popular with Thai tourists who come for the photo opportunities among the flower installations. Evening visits around 5-7pm offer cooler temperatures and better lighting for photos.