Last updated: August 21, 2025
In December, Vientiane, Laos experiences a pleasant climate characterized by warm temperatures and low precipitation. Daily highs can soar to a maximum of 35°C (95°F), while the average temperature hovers around 23°C (74°F), providing a comfortable backdrop for outdoor activities. The month sees only about 7 mm (0.3 in) of rain, typically falling over just 1 day, making it an ideal time for exploration. Humidity levels are relatively moderate at 57%, adding to the enjoyable weather. This unique blend of conditions makes December a perfect month to experience the vibrant culture and scenic beauty of Vientiane.
In December, Vientiane experiences a delightful transition as temperatures begin to dip, offering a refreshing break from the intense heat of the preceding months. With minimum temperatures cooling to around 9°C (48°F) and a comfortable average of 23°C (74°F), the city welcomes the winter season. This month boasts maximum temperatures that remain pleasant, capping at 35°C (95°F), making it one of the best times to explore Vientiane's rich culture and stunning landscapes. The gradual decrease in temperature from the scorching highs of earlier months not only enhances the overall comfort but also encourages locals and visitors alike to engage in outdoor activities and festivities during this vibrant time of year.
December in Vientiane, Laos, sees a notable decline in precipitation as the rainy season comes to a close. With only 7 mm (0.3 in) of rainfall recorded over just 1 day, this month marks one of the driest periods of the year. Following a peak in August with a staggering 402 mm (15.8 in), the precipitation rapidly diminishes, reflecting the shift from the wet to the dry season. The transition to drier months begins in November with a slight dip to 10 mm (0.4 in), and as December arrives, the climate shifts towards cooler, more stable weather, setting the stage for the dry season ahead.
In Vientiane, Laos, December ushers in a noticeable shift in humidity, settling at 57%. This marks a drop from the steamy heights of late summer, where humidity peaks in August at a staggering 87%. As the year progresses, humidity experiences a gradual decline from March's low of 39%, reflecting the transition into the rainy season by May, when levels jump to 69%. As the cooler months approach, humidity sees a steady decrease, dropping to 63% in November before finally reaching December's average. This ebb and flow creates a tropical climate that, although humid, becomes slightly more bearable during the end of the year, making December a more comfortable month for residents and visitors alike.
As December rolls into Vientiane, the UV Index begins to show a slight decline, measuring 8 and falling into the very high exposure category, which means you’ll still need to be cautious, especially during midday hours. This marks a transition from the extreme levels we’ve seen in the hotter months, notably peaking at 14 in mid-summer. With a burn time of just 15 minutes, it’s a reminder that even as temperatures cool slightly, sun safety remains essential. Keep your sunscreen handy and enjoy the festive spirit, but don’t forget to protect your skin. For more detailed information on UV levels throughout the year, check out Vientiane UV Index.
UV Risk Categories
In December, Vientiane basks in a delightful 311 hours of sunshine, contributing to the city's glow as it wraps up the year. This month embraces a notable increase in sunlight compared to the preceding August, which saw only 249 hours. The trend reveals a gradual rise in sunny days that peaks in March with an impressive 318 hours. Following that, the hours level off but remain generous, with December shining brightly alongside November's impressive 305 hours. As the year transitions from the wet season, the sun's warm embrace in December creates a perfect backdrop for exploring Laos’ rich culture and natural beauty.
In Vientiane, Laos, December brings a promising 85% chance of sunny weather, making it one of the more favorable months for sunshine as the year draws to a close. Following a notable dip in warmth and sunlight from April through August—where chances of sun plummet to as low as 13%—the trend gradually rebounds. November marks a significant improvement with 64% sun likelihood, paving the way for December's bright return. With the year ending on a high note, December offers a delightful escape from the rainier months, making it an excellent time for outdoor activities and enjoying the vibrant local culture.
In Vientiane, Laos, December marks the return to shorter days, with 11 hours of daylight, mirroring the patterns seen in both January and February. As the year progresses, daylight gradually increases until it peeks at 13 hours during the summer months of June and July. Following this summer phase, daylight durations taper off again from August onward, settling back into the shorter winter days. This cyclical pattern reflects the region's tropical climate, presenting a harmonious balance of light throughout the year, from the bright summer stretch to the brief and cozy winter days.
In December, the winds in Vientiane, Laos, pick up slightly, averaging 1.8 m/s (4 mph), mirroring the gentle breezes of the preceding months. This consistency not only brings a refreshing change to the city's air but also creates a serene atmosphere, making it ideal for evening strolls along the banks of the Mekong River. Reflecting on the broader yearly trend, wind speeds tend to be higher in the late fall and early winter months, reaching their peak in January. As the year winds down, the tranquil December air invites locals and visitors alike to embrace the beauty of the season with outdoor festivities, enhancing the charm of this vibrant city.
Weather in Vientiane varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vientiane, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January weather in Vientiane show some similarities and slight variations. Both months experience warm temperatures, with December averaging 23°C (74°F) and January just a degree higher at 24°C (75°F). The minimum temperatures are also comparable, with December's low at 9°C (48°F) and January's at 10°C (51°F). Surprisingly, both months reach a maximum of 35°C (95°F). Precipitation levels are quite low in both months, with December receiving 7 mm (0.3 in) and January slightly less at 6 mm (0.2 in), and both only seeing rain on one day. Humidity levels are also similar, with December at 57% and January dropping slightly to 52%. For more details, you can check Vientiane weather in January.
In December, the weather typically features a minimum temperature of 9°C (48°F) and an average high of 35°C (95°F), resulting in a warm climate with a balanced humidity of 57%. The month experiences minimal precipitation, with only 7 mm (0.3 in) falling over just one day. In contrast, February sees slightly warmer conditions, with a minimum temperature of 13°C (55°F) and average highs peaking at 38°C (100°F). This month also experiences a higher total precipitation of 17 mm (0.7 in), although rain is still infrequent, occurring on just one day, and humidity drops to 49%. For a more detailed look at February weather, visit Vientiane weather in February.
December and March exhibit distinct differences in weather patterns. In December, temperatures range from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), with an average of 23°C (74°F). The month is relatively dry, receiving only 7 mm (0.3 in) of precipitation over just 1 day and maintaining a humidity level of 57%. In contrast, March experiences warmer temperatures, with a minimum of 17°C (63°F), an average of 28°C (82°F), and a peak of 40°C (104°F). This month sees significantly more precipitation, totaling 41 mm (1.6 in) across 6 days, and features lower humidity at 39%. For more details on the weather trends, visit Vientiane weather in March.
In December, the weather in Vientiane is characterized by milder temperatures, with a minimum of 9°C (48°F) and a maximum of 35°C (95°F), averaging around 23°C (74°F). This month sees minimal precipitation, totaling just 7 mm (0.3 in) over 1 day, and a humidity level of 57%. In contrast, April experiences significantly warmer conditions, with temperatures ranging from a minimum of 17°C (63°F) to a scorching maximum of 42°C (107°F), averaging 29°C (85°F). Rainfall increases to 70 mm (2.8 in) over 11 days, and humidity drops to 40%, making the atmosphere feel quite different. For a more detailed look at April's weather, you can check out Vientiane weather in April.
In December, the weather is generally mild, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), and very little precipitation at just 7 mm (0.3 in) over the course of a single day. The humidity level is relatively comfortable at 57%. In contrast, May brings significantly warmer conditions, with temperatures starting from a minimum of 22°C (71°F) and soaring to a maximum of 41°C (107°F). This month is marked by heavy rainfall, totaling 204 mm (8.0 in) over 21 days, and a higher humidity of 69%. For a detailed look at Vientiane's weather in May, you can check Vientiane weather in May.
December and June in Vientiane present starkly contrasting weather conditions. December experiences milder temperatures, with averages ranging from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), accompanied by low precipitation of just 7 mm (0.3 in) and a relatively comfortable humidity level of 57%. In contrast, June boasts much warmer temperatures, with daily lows of 24°C (75°F) and highs reaching up to 39°C (102°F). Additionally, this month sees significant rainfall, totaling 309 mm (12.2 in) spread over 25 days, coupled with heightened humidity at 81%. For more details on the specific weather conditions in June, check out Vientiane weather in June.
In December, Vientiane experiences relatively mild weather with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), and an average temperature of 23°C (74°F). The month sees very little precipitation, averaging just 7 mm (0.3 in) over a single day, with humidity levels at a comfortable 57%. In contrast, July brings much warmer conditions, with minimum temperatures around 25°C (76°F) and maximums reaching 37°C (99°F), averaging at 29°C (84°F). However, this warmth comes with significant rainfall, as July experiences 331 mm (13.0 in) of precipitation over 26 days, leading to higher humidity levels at 83%. For more details, visit Vientiane weather in July.
December and August present stark contrasts in weather conditions. In December, temperatures range from a pleasant 9°C (48°F) at night to a warm 35°C (95°F) during the day, with an average of 23°C (74°F) and only a minimal 7 mm (0.3 in) of precipitation over just one day. The humidity is moderate at 57%. In contrast, August is much warmer and wetter, with temperatures starting at a warm 24°C (75°F) and peaking at 37°C (98°F), averaging 28°C (83°F). Precipitation is significantly higher, totaling 402 mm (15.8 in) across 26 days, and humidity levels soar to 87%. These disparities highlight the distinct seasonal shifts experienced in the region. For more detailed information, visit Vientiane weather in August.
In comparing the weather conditions of December and September, notable differences emerge. December typically features a milder temperature range, with minimums around 9°C (48°F) and maximums reaching up to 35°C (95°F). This month enjoys relatively low precipitation, with only 7 mm (0.3 in) over just one day and a humidity level of 57%. In contrast, September experiences significantly warmer temperatures, where the minimums hover at 23°C (73°F) and maximums can soar to 37°C (98°F). This month is characterized by heavy rainfall, accumulating about 265 mm (10.4 in) over 24 rainy days, and high humidity levels at 86%. For a more detailed look at the climate, check out Vientiane weather in September.
December weather in Vientiane presents a significant contrast to October. While December enjoys milder temperatures with a minimum of 9°C (48°F) and an average of 23°C (74°F), October is considerably warmer, featuring a minimum of 20°C (68°F) and an average of 28°C (82°F). Additionally, December experiences much less rainfall, with only 7 mm (0.3 in) over just one day, compared to October’s substantial 129 mm (5.1 in) over 15 days. The humidity in December is also lower at 57%, whereas October sees higher levels at 74%. For more detailed insights, you can check Vientiane weather in October.
In comparing the weather of December and November, December tends to be slightly cooler, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), while November features higher temperatures, starting at 17°C (63°F) and reaching up to 36°C (98°F). Additionally, December experiences less precipitation, averaging only 7 mm (0.3 in) over just one day, compared to November's 10 mm (0.4 in) spread across three days. Humidity levels are slightly lower in December at 57%, compared to November's 63%. For a more detailed look at November's weather, you can visit Vientiane weather in November.
As December arrives in Vientiane, the weather transforms into a refreshing respite from the sweltering heat of earlier months. Temperatures are pleasantly mild, with cool evenings inviting you to enjoy outdoor activities, while daytime warmth makes it ideal for exploration. This month stands out with minimal rainfall, ensuring that the vibrant landscape is dry and welcoming. The lower humidity contributes to a more comfortable atmosphere, creating perfect conditions for visitors and locals alike to savor the charm of the city. For more details on the seasonal climate variations, check out Vientiane Climate.