Last updated: August 28, 2025
December in Mong Cai, Vietnam brings a cool, refreshing climate with temperatures ranging from a maximum of 25°C (78°F) to an average of 17°C (63°F), dipping as low as 8°C (46°F). This month experiences 55 mm (2.2 in) of rainfall over 10 days, contributing to a humidity level of 70% that enhances the crisp air. As the year winds down, these weather conditions make for a unique, tranquil atmosphere, ideal for exploration and enjoying the serene beauty of Mong Cai.
In Mong Cai, Vietnam, December marks a transition into the cooler and more refreshing winter months. With minimum temperatures dipping to 8°C (46°F) and reaching a comfortable average of 17°C (63°F), the region offers a pleasant respite from the heat of the preceding months. Daytime highs, peaking at 25°C (78°F), ensure that the chill of the night is contrasted by warm, sunny afternoons. Notably, December showcases a slight decrease in temperature compared to the mild late fall, providing a favorable environment for outdoor activities while enjoying the city's vibrant scenery. As the year closes, Mong Cai's weather invites both locals and visitors to revel in its crisp air and serene ambiance, perfect for exploring its rich culture and breathtaking landscapes.
In Mong Cai, Vietnam, December marks a transition as the year winds down, bringing an average precipitation of 55 mm (2.2 in) over approximately 10 days. This amount is a slight increase from November's 47 mm, indicating a modest uptick in rainfall. Throughout the year, precipitation peaks dramatically during the summer months, particularly in August with 469 mm (18.5 in), creating a vivid contrast to the drier late fall, exemplified by November's low rainfall. As December follows the heavy rains of mid-year, it serves as a reminder of the region's tropical climate, balancing the lush greenery nurtured by earlier storms with a cooler atmosphere as winter approaches. This pattern of rainfall highlights a clear seasonal trend, with a strong emphasis on both the intensity and frequency of precipitation during the wet months.
In December, Mong Cai, Vietnam, experiences a moderate humidity level of 70%, which marks a slight decrease from the peak of 86% seen during the summer months of July and August. This drop signifies a transition as the year winds down, following a gradual decline from 73% in March and a steadier trend through the autumn. As the region welcomes the cooler winter air, the humidity settles into a comfortable range reminiscent of the earlier months, fostering a moist but inviting atmosphere. Over the entire year, there’s a noticeable increase in humidity from January's 66%, peaking in mid-summer and then tapering off, hinting at a dynamic climate that balances moisture with seasonal variations.
In December, the UV Index in Mong Cai, Vietnam, drops to 7, placing it in the high exposure category. This marks a shift from the preceding months, where values consistently reached extremes, peaking at 14 in July and August. With a burn time of 25 minutes, December offers a brief respite for sunseekers, allowing for more extended outdoor activities compared to the scorching summer, when protective measures were critical within just 10 minutes. As the year wraps up, residents and visitors alike can enjoy the milder sun while still being mindful of UV exposure. For more detailed information, check out the Mong Cai UV Index.
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As December arrives in Mong Cai, Vietnam, the city basks in a welcoming 235 hours of sunshine, continuing the trend of abundant light that characterizes the region's year. Following a peak in sunlight during the lush month of May, which boasts an impressive 305 hours, the sunshine gradually begins to recede in the latter part of the year. Despite this decline, December still benefits from more sunlight compared to the earlier months, showcasing a consistent pattern of bright days throughout the fall. This gentle transition from the vibrant summer rays to the softer winter light not only enhances the picturesque landscapes but also invites locals and travelers alike to enjoy the unique charm of Mong Cai during this season of moderate warmth and tranquility.
In Mong Cai, Vietnam, December sees a 54% chance of sunny weather, continuing a trend of increasing sunshine that begins in the months prior. After a dip in sunny afternoons during the summer months, where chances fall to as low as 11% in August, the likelihood of clear skies gradually rises again with 51% in November. This upward trajectory suggests that while winter sets in, opportunities for sun-kissed days are still present, making December a pleasant time to enjoy the area’s natural beauty and vibrant culture. As the year winds down, visitors can expect a mix of weather, but the growing chances of sun offer a hopeful outlook for outdoor adventures.
As December embraces Mong Cai, Vietnam, daylight begins its annual retreat, offering just 10 hours of sunlight. This pattern mirrors the gradual ebb of light seen earlier in the year, where daylight progressively lengthens from a mere 10 hours in January to a peak of 13 hours during the vibrant summer months of May through July. Following the zenith of midsummer, the hours of daylight consistently dim, bringing a comforting familiarity as nature prepares for the cooler months of the year. With 11 hours in both October and November preceding December's decline, the cycle of daylight duration paints a rhythmic portrait of seasonal transition, inviting residents and visitors alike to savor the beauty of each moment before the year draws to a close.
As December settles in Mongolia, the wind carries a gentle chill, with an average speed of 4.0 m/s (9 mph). This month reflects a noticeable increase from the calmer conditions seen in September and October, where winds dipped to about 2.3 m/s and then picked up to 6.0 m/s before returning to a moderate pace. Throughout the year, summer months like May and June showcase the strongest breezes, reaching up to 4.6 m/s, while winter settles in with more subdued but consistent winds. This trend suggests the shifting dynamics of Mong Cai's climate, where the cooling December air tempers the stronger gusts of previous months, inviting a serene yet brisk ambiance perfect for enjoying the coastal beauty.
Weather in Mong Cai varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mong Cai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between December and January, we see slight variations in temperature and precipitation. December typically experiences a minimum temperature of 8°C (46°F) and an average maximum of 25°C (78°F), while January shows a slightly cooler range with a minimum of 7°C (45°F) and a maximum of 23°C (73°F). Precipitation also increases from 55 mm (2.2 in) in December to 62 mm (2.4 in) in January, maintaining consistent rainfall over about 10 days in both months. Humidity levels dip slightly from 70% in December to 66% in January, contributing to a marginally drier feel. For more detailed insights, you can check Mong Cai weather in January.
December and February in this region share similar temperature ranges, with December boasting a minimum of 8°C (46°F) and an average of 17°C (63°F), while February maintains the same minimum and average temperatures. However, February is slightly cooler at a maximum of 24°C (75°F) compared to December's 25°C (78°F). In terms of precipitation, February sees an increase to 62 mm (2.5 in) over 11 days, compared to December's 55 mm (2.2 in) over 10 days, suggesting a wetter month overall. Humidity also rises marginally, with February at 71% versus December's 70%. For more detailed information about February weather, you can refer to Mong Cai weather in February.
In December, the weather features a more moderate temperature range with minimums around 8°C (46°F) and average highs at 25°C (78°F), making it relatively pleasant. The month has lower precipitation at 55 mm (2.2 in) over about 10 days, while humidity hovers around 70%. In contrast, March brings warmer temperatures with a minimum of 14°C (57°F) and an average of 21°C (69°F), peaking at 26°C (80°F). However, it experiences increased rainfall, totaling 84 mm (3.3 in) spread over roughly 15 days, and slightly higher humidity at 73%. For more detailed information, check out Mong Cai weather in March.
In December, the weather tends to be cooler, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 25°C (78°F) and an average of 17°C (63°F). The month sees about 55 mm (2.2 in) of precipitation over roughly 10 days, contributing to a humidity level of 70%. In contrast, April experiences warmer conditions, with a minimum temperature of 16°C (61°F), an average of 23°C (74°F), and a maximum reaching 29°C (85°F). This month is also wetter, receiving 86 mm (3.4 in) of rainfall across approximately 14 days, while maintaining a slightly higher humidity level of 71%. For more detailed insights, you can visit Mong Cai weather in April.
December and May present distinct weather profiles. In December, temperatures range from a mild minimum of 8°C (46°F) to a comfortable maximum of 25°C (78°F), with an average of 17°C (63°F). The month sees about 55 mm (2.2 in) of precipitation over approximately 10 days, and humidity levels hover around 70%. In contrast, May experiences significantly warmer temperatures, with a minimum of 19°C (67°F) and a maximum reaching up to 32°C (90°F), averaging 27°C (81°F). Rainfall is also more pronounced in May, totaling 190 mm (7.5 in) across 19 days, accompanied by a slightly higher humidity of 76%. For more specific details on the climate during this month, you can check Mong Cai weather in May.
In December, the weather is generally mild with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 25°C (78°F), and average precipitation is around 55 mm (2.2 in) spread over 10 days, contributing to a relatively comfortable humidity level of 70%. In contrast, June experiences much warmer temperatures, with a minimum of 23°C (74°F) and a maximum reaching 33°C (92°F), coupled with significantly higher precipitation levels of 265 mm (10.4 in) over 23 days, leading to an increased humidity of 79%. This stark contrast highlights the transition from the cooler, drier climate of December to the hot, wet conditions typical of June. For more details on June's climate, you can refer to Mong Cai weather in June.
When comparing the weather in December and July, significant differences emerge. December features a milder temperature range, with minimums around 8°C (46°F) and averages hitting about 17°C (63°F), peaking at a pleasant 25°C (78°F). The month experiences moderate precipitation of 55 mm (2.2 in) over roughly 10 days, accompanied by an average humidity level of 70%. In contrast, July is characterized by a much warmer climate, with temperatures starting at a minimum of 26°C (78°F), averaging 29°C (84°F), and reaching highs of 33°C (91°F). This month sees substantial rainfall, totaling 364 mm (14.3 in) over 25 days, and a higher humidity level of 86%. For a closer look at July conditions, you can refer to Mong Cai weather in July.
December and August present strikingly different weather patterns. In December, temperatures range from a minimum of 8°C (46°F) to a maximum of 25°C (78°F), with an average of 17°C (63°F), and the month experiences relatively low precipitation of 55 mm (2.2 in) over about 10 days. In contrast, August boasts a significantly warmer climate, featuring temperatures that range from a minimum of 25°C (78°F) to a maximum of 33°C (91°F), with an average of 29°C (84°F). However, August is much wetter, receiving a substantial 469 mm (18.5 in) of rainfall over 26 days, along with higher humidity levels at 86%. For a detailed look at August weather, visit Mong Cai weather in August.
December weather is significantly cooler compared to September, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 25°C (78°F) and an average of 17°C (63°F). In contrast, September experiences much higher temperatures, with a minimum of 24°C (75°F) and a maximum of 33°C (92°F), making it much warmer overall. Additionally, September sees a considerable amount of precipitation, totaling 256 mm (10.1 in) over 21 days, whereas December has a much lighter rainfall of 55 mm (2.2 in) spread across 10 days. Humidity is slightly higher in September at 78%, compared to 70% in December. For more details, you can check Mong Cai weather in September.
In comparing the weather between October and December, notable differences emerge. October experiences higher temperatures, with average highs reaching 32°C (90°F) and lows around 18°C (65°F), while December's temperatures are milder, ranging from a minimum of 8°C (46°F) to a maximum of 25°C (78°F). Additionally, October is marked by significantly greater precipitation, totaling 206 mm (8.1 in) over 14 days, compared to December's 55 mm (2.2 in) spread across 10 days. Humidity remains quite similar in both months, hovering around 70-72%. For more detailed insights on October weather, visit Mong Cai weather in October.
In comparing the weather of December and November, we can observe notable differences in temperature and precipitation. December experiences slightly cooler temperatures, with a minimum of 8°C and an average of 17°C, compared to November's minimum of 12°C and an average of 22°C. Additionally, while December has a maximum temperature of 25°C, November peaks at a warmer 28°C. Precipitation is also more frequent in December, with 55 mm over 10 days, whereas November sees 47 mm across 8 days. Both months maintain similar humidity levels, with December at 70% and November slightly lower at 69%. For more detailed insights on November weather, visit Mong Cai weather in November.
December in Mong Cai brings a notable shift in weather dynamics compared to the warmer months. With average temperatures hovering around a comfortable 17°C (63°F), the colder evenings can drop as low as 8°C (46°F), offering a refreshing change. This month also marks a transition into the wet season, with precipitation occurring on about 10 days and totaling 55 mm (2.2 in), creating a lush backdrop for the vibrant landscapes. The humidity remains relatively high at 70%, enhancing the crisp air. December, therefore, offers a blend of cooler temperatures and occasional rains, making it a unique period for experiencing Mong Cai's climate. For more insights into the weather patterns throughout the year, visit Mong Cai Climate.