Things to Do in Vang Vieng in December
December weather, activities, events & insider tips
December Weather in Vang Vieng
Is December Right for You?
Advantages
- Peak adventure season with excellent visibility for hot air ballooning - mornings are typically calm with clear skies, giving you those spectacular limestone karst views that make Vang Vieng famous. The cooler morning air actually makes balloons more stable, and you'll often see 8-10 balloons launching together around 6:30am.
- Water levels in the Nam Song River hit the sweet spot for tubing - not the raging torrent of rainy season, but still flowing enough to move you along at a relaxed pace. You'll actually float rather than scraping along rocks, and the 10 rainy days mean the water stays refreshingly cool without being murky.
- Comfortable cave exploration weather - the 70% humidity sounds high, but inside caves like Tham Chang and Tham Phu Kham, it's actually pleasant compared to the 90%+ you'd get in hot season. The variable conditions mean you're not dealing with the scorching heat that makes climbing up to cave entrances absolutely brutal in March-May.
- December sits right between high season chaos and the tourist surge of Chinese New Year in late January - you'll find accommodation prices are reasonable (typically 20-30% lower than peak), restaurants aren't packed, and you can actually book popular activities with just 3-4 days notice rather than the 2-week advance booking needed in January-February.
Considerations
- Those 10 rainy days are unpredictable - showers can roll in any time of day, not just the reliable afternoon pattern you get in rainy season. This makes planning outdoor activities a bit of a gamble, and you might find yourself sheltering under a restaurant awning for 30-40 minutes when a storm decides to show up.
- UV index of 8 is deceptively intense - the variable cloud cover tricks people into thinking they don't need sun protection, then you end up with serious burns after a day on the river. The reflection off the water makes it worse, and I've seen countless tourists turn lobster-red by day two because they underestimated December sun.
- The warm and humid combination (70% humidity with variable temperatures) means your clothes never fully dry if you're doing water activities daily. That damp towel smell becomes your constant companion, and anything you wash will still feel slightly moist the next morning unless you're staying somewhere with actual air conditioning.
Best Activities in December
Hot Air Balloon Rides Over Limestone Karsts
December mornings offer the most stable conditions for ballooning - calm winds and clear visibility before any afternoon weather rolls in. Launch times are typically 6:30-7:00am when temperatures are coolest, and you'll float over the karst landscape for 45-60 minutes. The variable December weather actually works in your favor here because operators are very conservative about cancellations, so if you're up there, conditions are genuinely perfect. The morning light hitting the limestone cliffs is spectacular, and you'll often see the mist still sitting in the valleys below.
Nam Song River Tubing Routes
The river flow in December is ideal - strong enough to move you along without effort, but calm enough that you're not white-knuckling it around bends. The full route from Organic Farm to town takes 2.5-3 hours at December water levels, or you can do the shorter 90-minute route from the northern launch point. Water temperature stays refreshing thanks to those 10 rainy days keeping things cool, and the 70% humidity means you'll actually appreciate being in the water. Avoid the midday UV peak (11am-2pm) - either start early around 9am or wait until 3pm when the sun is less intense.
Multi-Cave Exploration Circuits
December weather makes cave exploration genuinely comfortable - you're not overheating on the climbs up to entrances, and the 70% humidity inside caves is manageable rather than suffocating. Tham Chang requires climbing 150m (492 ft) of stairs but rewards you with river views and illuminated chambers. Tham Phu Kham sits 200m (656 ft) up a steep trail and contains a reclining Buddha plus a lagoon for swimming. The variable conditions mean you might get lucky with dramatic storm light filtering into cave openings, creating those photographer-dream moments. Plan 3-4 hours for a two-cave circuit including travel time.
Rock Climbing on Limestone Cliffs
The limestone around Vang Vieng offers routes from beginner 5.6 to advanced 5.12+, and December conditions are near-perfect - rock stays dry between rain showers, and the variable cloud cover means you're not climbing in relentless sun. Morning sessions (7am-11am) offer the best conditions before any afternoon weather moves in. The 70% humidity means your hands won't get as sweaty as they would in hot season, giving you better grip. Popular crags like Sleeping Wall and Tham None are 15-20 minutes from town by bicycle.
Countryside Cycling Tours Through Rice Paddies
December offers post-harvest landscapes - the rice paddies are golden-brown stubble rather than bright green, but this actually makes for easier cycling because paths are dry and firm. The variable weather keeps temperatures comfortable for the 15-25km (9.3-15.5 mile) circuits, and you'll pass through traditional Lao villages where daily life continues without tourist crowds. Early morning rides (6:30-9:30am) give you the best light and coolest temperatures before the UV index climbs. The 70% humidity is noticeable but not oppressive while you're moving.
Kayaking Expeditions on Nam Song River
December water levels make kayaking more engaging than tubing - you'll actually paddle rather than just drift, and the variable conditions mean some days have light rapids that add excitement without danger. Half-day trips cover 12-15km (7.5-9.3 miles) downstream with stops at riverside caves and swimming spots. The warm and humid weather means you'll welcome splashing through small rapids, and the 10 rainy days keep the water clear rather than muddy. Mornings offer calmer conditions, though afternoon paddles can be dramatic if weather is building.
December Events & Festivals
Lao National Day
December 2nd marks the 1975 establishment of the Lao PDR, and Vang Vieng sees government offices and some businesses close for the day. You'll notice Lao flags displayed prominently around town, and there might be small ceremonies at the district office, though this isn't a major tourist spectacle. It's more of a quiet observance - banks and government services are closed, but restaurants and tour operators continue operating normally. Worth knowing for planning purposes if you need to handle any official business.