Last updated: August 28, 2025
In December, Son La, Vietnam experiences a diverse climate, featuring maximum temperatures reaching up to 31°C (89°F) and a cooler average of 16°C (62°F). The month can bring chilly nights with minimum temperatures dipping to 3°C (37°F), reflecting the region's varying conditions. With approximately 25 mm (1.0 in) of precipitation over about 4 days, residents can expect a largely dry climate, although the humidity levels remain relatively high at 68%. This unique blend of temperature and moisture contributes to the enchanting beauty of Son La during the winter season, making it a remarkable time to explore the region's natural landscapes.
In Son La, Vietnam, December marks a significant drop in temperatures, with minimums dipping to around 3°C (37°F), setting the stage for the cooler winter months ahead. The average temperature hovers around 16°C (62°F), providing a crisp but manageable atmosphere, while highs can still reach up to 31°C (89°F), reminiscent of the warmer late fall days. This blend of cool mornings and mild afternoons contrasts sharply with the more temperate conditions earlier in the year, showcasing a distinct transition. As the region winds down from the lush warmth of autumn, December invites both locals and visitors to enjoy the refreshing chill and the cozy charm of winter in this picturesque Vietnamese locale.
In December, Son La, Vietnam experiences a notable decrease in precipitation, recording only 25 mm (1.0 in) across just 4 days. This trend is consistent with the transitional climate of the latter part of the year, where the heavy monsoon rains of summer give way to lighter, steadier showers. Following a peak in rainfall during the summer months, notably in July and August, which saw over 300 mm (11.8 in), December marks a return to drier conditions akin to those observed in January and February. As the year wraps up, the declining precipitation not only indicates shifting weather patterns but also provides a brief respite for the region after months of significant rainfall and humidity.
In Son La, Vietnam, December ushers in a humidity level of 68%, which is slightly lower than the peak of 92% observed in the sweltering months of July and August. As the year winds down, this drop signifies a transition away from the intense humidity of summer. From January to April, humidity levels gradually decrease, reaching their lowest point of 50% in April, before climbing again in the warmer months. The December humidity reflects a consistent trend across the year, showing that while late fall and winter months are generally more stable, the atmosphere remains pleasantly humid, providing a refreshing respite as the region prepares for the cooler months ahead.
In Son La, Vietnam, the UV Index experiences a noticeable trend as the year progresses. Starting at 8 in January, the index peaks in the mid-year months, reaching a high of 14 from May through September, indicating an extreme exposure category with a quick burn time of just 10 minutes. This trend of high UV exposure signifies a need for enhanced sun protection during these months. As the year winds down, December sees a dip back to an index of 8, returning to the very high exposure category, which still requires vigilance with a 15-minute burn time. For more detailed information about UV levels throughout the year, visit Son La UV Index.
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Son La, Vietnam, basks in a generous array of sunlight throughout the year, culminating in December with 262 hours of radiant bliss. As the last month of the year rolls around, it marks a slight dip from the sunniest month, May, which boasts an impressive 312 hours. Interestingly, the region experiences a gradual increase in sunshine from January’s relatively modest 197 hours to a peak in March with 288 hours. Following this peak, the light begins to soften yet remains abundant, with each month contributing to a robust annual total. This trend reflects the unique climate of Son La, where the warmth of December offers a comforting reminder of the sun’s presence as the year draws to a close, inviting both reflection and anticipation for the brighter days ahead.
In December, Son La, Vietnam, enjoys a heightened likelihood of sunny weather, with a 55% chance of sunshine that contrasts sharply with the rainy months preceding it. As we transition from the wet season of June to August, where the chances plummet to between 10% and 18%, the sun starts to make a welcome return. This upward trend in December is a pleasant surprise, showcasing a significant increase from the 39% likelihood in November. With winter creeping in, December becomes a delightful month for outdoor activities, making it the perfect time to visit and soak up the sun in this picturesque region.
In Son La, Vietnam, the rhythm of daylight unfolds beautifully throughout the year, showcasing a notable trend as the seasons change. January and December both greet residents with about 10 hours of daylight, marking the shorter days of winter. As spring approaches in February, daylight begins to stretch to 11 hours, continuing to lengthen until it reaches a peak of 13 hours in May, June, and July—the heart of summer. This generous sunlight gives way to a gradual decrease as August slides back to 12 hours, followed by a gentle decline to 11 hours in both October and November. The cycle completes itself as the year ends, transitioning back to 10 hours in December. This rhythmic pattern not only illuminates the changing seasons but also enriches the vibrant lifestyle of Son La’s residents.
As December rolls into Son La, Vietnam, the winds offer a gentle embrace, averaging 1.6 m/s (4 mph), a slight uptick from the previous few months. This consistent breeze hints at the onset of winter, providing a refreshing contrast to the warmer summer months, which saw the wind speeds dip to as low as 1.3 m/s (3 mph). Interestingly, the winds were at their peak as the year began, reaching 1.8 m/s (4 mph) in January, before settling into a gradual decline over the spring and summer months. Yet, as autumn transitioned into winter, those speeds began to stabilize again, suggesting a return to more dynamic weather patterns. The winds of December not only underscore the seasonal shifts in Son La but also invite visitors and locals alike to experience the calm yet invigorating spirit of the month.
Weather in Son La varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Son La, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit relatively mild weather, with temperatures remaining comfortable throughout both months. December sees a minimum temperature of 3°C (37°F) and an average of 16°C (62°F), peaking at 31°C (89°F). In contrast, January starts off slightly warmer with a minimum of 6°C (43°F) and an average of 17°C (62°F). Both months experience similar maximum temperatures, maintaining around 31°C (88°F) in January. Precipitation increases slightly in January to 34 mm (1.4 in) over five days, compared to 25 mm (1.0 in) over four days in December, while humidity remains relatively stable at 68% in December and drops to 63% in January. For more detailed information, you can check Son La weather in January.
In comparing December and February weather, both months present a warm climate, but February typically feels slightly milder. December experiences minimum temperatures around 3°C (37°F) and average highs reaching up to 31°C (89°F), while February sees a higher minimum of 7°C (45°F) and maximum temperatures peaking at 33°C (92°F). Precipitation levels remain consistent in both months at 25 mm (1.0 in), although December has a slightly higher frequency of rainy days, with precipitation occurring on 4 days compared to just 3 days in February. Humidity is also a bit lower in February at 65%, compared to December's 68%. For a more detailed look at February weather, check Son La weather in February.
In December, the weather features a minimum temperature of 3°C (37°F) and an average of 16°C (62°F), with a maximum reaching 31°C (89°F). Precipitation is relatively low, with only 25 mm (1.0 in) over four days and humidity at 68%. In contrast, March experiences milder temperatures with a minimum of 11°C (53°F) and an average of 22°C (71°F), peaking at 34°C (93°F). March is also wetter, receiving 67 mm (2.6 in) of rainfall spread over nine days, but the humidity drops to a comfortable 57%. For more details on the weather, check out Son La weather in March.
In December, temperatures in Son La range from a minimum of 3°C (37°F) to a maximum of 31°C (89°F), with an average of 16°C (62°F). The month typically sees around 25 mm (1.0 in) of precipitation over just 4 days, combined with a humidity level of 68%.
In contrast, April offers a much warmer experience, with temperatures starting at 11°C (52°F) and soaring to a maximum of 37°C (99°F), averaging 23°C (74°F). However, this increase in warmth comes with significantly more rainfall—103 mm (4.0 in) distributed over 13 days, while humidity decreases to 50%. For more details, check out Son La weather in April.
The weather in December is characterized by a moderate temperature range, with minimums around 3°C (37°F), averages at 16°C (62°F), and maximums reaching up to 31°C (89°F). Precipitation is relatively low, with only 25 mm (1.0 in) recorded over 4 days, while humidity maintains a consistent level of 68%.
In contrast, May experiences significantly warmer temperatures, with minimums at 16°C (61°F), averages soaring to 26°C (79°F), and maximums peaking at 38°C (101°F). This month also sees increased rainfall, totaling 102 mm (4.0 in) over 16 days, while humidity remains steady at 68%. For more detailed insights about the weather conditions during this month, you can visit Son La weather in May.
When comparing the weather in December and June, December showcases a much milder climate, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 31°C (89°F). In contrast, June presents a warm and humid atmosphere, featuring average temperatures from 21°C (70°F) to an impressive 37°C (99°F). Additionally, December experiences relatively low precipitation at 25 mm (1.0 in) over just 4 days, whereas June sees significantly higher rainfall, totaling 178 mm (7.0 in) over 24 days. The humidity is also higher in June at 79%, compared to December’s 68%. For more detailed insights on June weather, check Son La weather in June.
In December, the weather typically features milder temperatures with a minimum of 3°C (37°F) and a comfortable average of 16°C (62°F), peaking at 31°C (89°F). Precipitation is relatively low, totaling 25 mm (1.0 in) over about 4 days, resulting in humidity around 68%. In stark contrast, July brings significantly warmer temperatures, with a minimum of 21°C (70°F) and an average of 26°C (79°F), reaching highs of 35°C (95°F). Rainfall dramatically increases during this month, with 285 mm (11.2 in) spread over roughly 23 days, leading to higher humidity levels at 91%. For a detailed overview of July weather, you can check Son La weather in July.
In comparing December and August weather, December generally offers milder temperatures, with a minimum of 3°C (37°F) and an average of 16°C (62°F), peaking at 31°C (89°F). This month experiences significantly less precipitation, averaging only 25 mm (1.0 in) over about 4 days, with relative humidity at a moderate 68%. In stark contrast, August presents a much warmer climate, characterized by a minimum temperature of 21°C (70°F) and an average of 26°C (78°F), reaching highs of 33°C (92°F). However, it is also the wettest month, with a staggering 322 mm (12.7 in) of rainfall spread across 26 days, resulting in high humidity levels at 92%. For more details on the August climate, refer to Son La weather in August.
The weather in December contrasts significantly with that of September. In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 31°C (89°F), with an average temperature of 16°C (62°F) and relatively low humidity at 68%. Precipitation is minimal in December, averaging only 25 mm (1.0 in) over about 4 days. In comparison, September boasts a warmer climate, with temperatures ranging from a minimum of 17°C (63°F) to a high of 34°C (94°F), and an average temperature of 25°C (78°F). The month is marked by significantly higher rainfall, with 121 mm (4.8 in) spread over approximately 19 days, coupled with higher humidity at 82%. For more detailed insights into September weather, you can check Son La weather in September.
When comparing the weather between October and December, October tends to be warmer with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (91°F). In contrast, December experiences cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 31°C (89°F). Additionally, October sees significantly more precipitation, averaging 103 mm (4.0 in) over 13 rainy days, whereas December has only 25 mm (1.0 in) over just 4 days. Humidity levels are also higher in October at 76% compared to December's 68%. For more detailed insights into October weather, you can visit Son La weather in October.
In comparing the weather between November and December, December tends to experience cooler temperatures overall, with a minimum of 3°C (37°F) compared to November's minimum of 9°C (49°F). While both months share a maximum temperature of 31°C (89°F), November has a higher average temperature of 20°C (69°F) versus December's 16°C (62°F). Precipitation in December is slightly higher at 25 mm (1.0 in) compared to November's 18 mm (0.7 in), although both months see precipitation over 4 days. Humidity levels also decrease slightly in December to 68%, while November maintains a higher humidity level of 72%. For more insights on November weather, check out Son La weather in November.
In December, Son La experiences a unique shift in weather that sets it apart from other months. The temperatures are cooler, with an average dip that brings both chilly nights and mild days, transitioning from the warmth of previous months. This period also sees an increase in humidity, lending a fresh, crisp feel to the air, while precipitation is relatively low, with only a few rainy days to break the dry spell. Such conditions create a tranquil ambiance, perfect for those seeking to experience the serene beauty of Son La in its quieter season. For a detailed look at what to expect throughout the year, visit Son La Climate.