Last updated: August 28, 2025
In April, Lang Son, Vietnam experiences a delightful mix of weather conditions. With maximum temperatures reaching 34°C (93°F) and an average of 22°C (72°F), the days can be quite warm, while cool evenings offer a refreshing respite with minimum lows around 10°C (50°F). Rainfall is a significant feature this month, accumulating to 117 mm (4.6 in) over 18 days, resulting in a 64% humidity level that enhances the lush landscape. This blend of warmth and moisture creates a vibrant atmosphere, making April an enchanting time to explore Lang Son's natural beauty.
In Lang Son, Vietnam, April heralds the arrival of warmer days, with temperatures reflecting a delightful shift in the season. The month kicks off with a minimum of 10°C (50°F), setting a warm tone that gradually climbs to an average of 22°C (72°F), and peaks at a sultry 34°C (93°F). This transition from March, where nights are a tad cooler, to April's more pleasant climate, showcases a steady increase in warmth that's a welcome change for residents and visitors alike. As the days lengthen and the sun shines brighter, April's balmy weather invites outdoor adventures, making it a fantastic time to explore the region's vibrant landscapes and rich culture.
In April, Lang Son experiences a significant uptick in rainfall, with total precipitation reaching 117 mm (4.6 in) over 18 days. This marks a notable increase from the previous month’s 92 mm (3.6 in), highlighting the transition into the wetter season. As spring unfolds, the frequency of rain begins to mirror the subsequent months, with April setting the stage for May’s peak of 179 mm (7.1 in). This trend illustrates a clear pattern of increasing precipitation in the months leading up to the summer, making April a pivotal point in Lang Son’s annual hydrological cycle. The blend of frequent showers and rising totals encourages vibrant greenery and fosters the region’s lush landscapes.
In April, humidity in Lang Son, Vietnam, dips to 64%, showcasing a pleasant reprieve after the typically wetter months of early spring. This marks a slight decrease from March's 69%, suggesting that as the region transitions into the warmer months, the atmosphere begins to dry out. Following this trend, May sees a rise back up to 73%, indicating a return to more humid conditions as summer approaches. Overall, April serves as a brief interlude with relatively moderate humidity, nestled between the wetter spring and the humid summer that follows.
In April, Lang Son, Vietnam experiences a notable rise in UV radiation, with the UV Index reaching 13. This marks a continuation of the extreme exposure category, indicating that the risk of harm from unprotected sun exposure is quite significant. Just like March, where the Index peaked at 12, April demands vigilance, as a sunburn can occur in as little as 10 minutes. This trend of increasing UV levels is consistent throughout the early months of the year, climbing from a UV Index of 8 in January to a staggering 14 by August. As you enjoy the warmth of spring, remember to take necessary precautions to safeguard your skin. For more detailed information, visit Lang Son UV Index.
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April brings a delightful shift in Lang Son, Vietnam, as the city basks in a generous 216 hours of sunshine, marking a peak in the early spring warmth. This notable increase from 172 hours in March not only reflects a more vibrant landscape but also sets the tone for the forthcoming months, where May follows with an impressive 297 hours. The gradual ascension in sunshine hours from January's 151 hours to April's figures highlights the region's transition into a sunnier, more inviting season. As the days continue to lengthen, Lang Son transforms into a lively haven, inviting both locals and visitors to revel in its radiant charm.
In Lang Son, Vietnam, the likelihood of sunny weather takes a noticeable dip in April, with only an 11% chance of clear skies. This decline follows the somewhat sunnier months of January through March, where sunshine probabilities hover between 18% to 41%. As spring progresses, April transitions into a period of increased cloud cover and potential rain, marking it as one of the least favorable months for those seeking sunny days. Interestingly, the sunny outlook gradually improves into May and continues into the following months, suggesting that while April may bring clouds, brighter days are just around the corner.
April in Lang Son, Vietnam, offers a delightful balance of daylight, with 12 hours illuminating the days. This consistency mirrors the gradual transition seen throughout the earlier months, as daylight lengthens from 10 hours in January to a peak of 13 hours in May and June. As spring unfolds, April's stable daylight duration enhances opportunities for outdoor activities and exploration, perfectly complementing the vibrant landscapes that come alive during this season. Following April, the daylight will start to wane slightly into the summer's end, but for now, the month stands as a beacon of warmth and brightness.
In Lang Son, Vietnam, the months of April unveil a gentle dance of breezes, with an average wind speed of 2.9 m/s (6 mph). This is just slightly below the peak of 3.0 m/s (7 mph) observed in March, illustrating a serene transition into the warmer days of spring. As the season unfolds, winds pick up momentum in May, reaching 3.3 m/s (7 mph), yet April remains a sweet spot of calm. Following this, a gradual decline in wind speeds emerges during the sweltering summer months, with July and August recording the lowest gusts, dropping to 2.1 m/s (5 mph) and 2.0 m/s (4 mph), respectively. As the year winds down, the autumn months bring a refreshing shift, with October showcasing a noticeable increase to 4.0 m/s (9 mph), reminding everyone that seasonal change is ever-present in this vibrant region.
Weather in Lang Son varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Lang Son, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January exhibit distinct weather patterns reflecting the transition from the cooler winter to the warmer spring. In January, temperatures are generally milder, with a minimum of 4°C (40°F) and a maximum of 27°C (80°F), averaging around 15°C (59°F). In contrast, April heats up significantly, boasting a minimum of 10°C (50°F) and peaking at 34°C (93°F), with an average of 22°C (72°F). Additionally, April experiences more precipitation, totaling 117 mm (4.6 in) over 18 days, compared to January’s 55 mm (2.2 in) across 11 days. Humidity levels are fairly similar, with April at 64% and January slightly higher at 66%. For a more detailed look at January's conditions, you can refer to Lang Son weather in January.
April typically experiences warmer temperatures compared to February, with a minimum of 10°C (50°F) and a maximum of 34°C (93°F), while February has a minimum of 5°C (41°F) and a maximum of 28°C (83°F). The average temperature in April is 22°C (72°F), significantly higher than February's average of 16°C (61°F). Additionally, April sees more precipitation at 117 mm (4.6 in) over 18 days, compared to February's 57 mm (2.2 in) over 11 days, indicating a wetter climate as spring arrives. However, February has slightly higher humidity at 71%, while April's humidity averages around 64%. For more details on February weather, check out Lang Son weather in February.
In comparing the weather of April and March, April typically experiences slightly warmer temperatures, with averages reaching 22°C (72°F) compared to March's average of 20°C (68°F). The maximum temperatures in April can rise up to 34°C (93°F), exceeding March's high of 32°C (89°F). However, April also sees increased precipitation, totaling 117 mm (4.6 in) over 18 days, which is higher than March's 92 mm (3.6 in) across 21 days. Humidity levels in April average around 64%, slightly lower than March's 69%, contributing to a more comfortable feel despite the rain. For more detailed information, you can visit Lang Son weather in March.
April and May present contrasting weather patterns, with May generally being warmer and wetter. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). The month experiences 117 mm (4.6 inches) of rainfall over 18 days and has a humidity level of 64%. In contrast, May sees higher temperatures, with minimums at 15°C (60°F) and maximums reaching 35°C (96°F), averaging 26°C (78°F). Rainfall also increases significantly to 179 mm (7.1 inches) across 22 days, and humidity rises to 73%. For a closer look at the specific weather conditions, visit Lang Son weather in May.
April and June exhibit distinct weather patterns, with June typically being hotter and more humid than April. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 34°C (93°F), averaging around 22°C (72°F). The month sees moderate precipitation, totaling 117 mm (4.6 in) over 18 days, with a humidity level of 64%. In contrast, June brings higher temperatures, with a minimum of 20°C (69°F) and a maximum reaching up to 37°C (100°F), averaging 28°C (83°F). Additionally, June experiences significant rainfall, accumulating 235 mm (9.2 in) over 21 days and an increased humidity level of 81%. For more detailed insights into June's climate, you can check Lang Son weather in June.
In comparing the weather of April and July, notable differences emerge. April sees milder temperatures, with a minimum of 10°C (50°F) and an average of 22°C (72°F), while July experiences warmer conditions, starting at a minimum of 23°C (73°F) and averaging 28°C (82°F). Additionally, July brings increased humidity at 90% compared to April's 64%, creating a more intense heat experience. Precipitation also escalates dramatically in July, with 243 mm (9.6 in) falling over 23 days, contrasting with April's 117 mm (4.6 in) over 18 days. For a more detailed look at the weather in July, you can check Lang Son weather in July.
April and August exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). This month experiences moderate rainfall of 117 mm (4.6 in) over 18 days and a humidity level of 64%. In contrast, August is warmer, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 35°C (96°F), averaging 27°C (81°F). Additionally, August sees significantly more precipitation at 346 mm (13.6 in) across 28 days and increased humidity at 89%. For more details, check out the Lang Son weather in August.
April and September present distinct yet appealing weather patterns. In April, temperatures range from a mild 10°C (50°F) to a maximum of 34°C (93°F), with an average temperature of 22°C (72°F). The month experiences 117 mm (4.6 in) of precipitation over 18 days, and humidity levels hover around 64%. In contrast, September sees a warmer minimum temperature of 19°C (67°F) and maintains an average of 26°C (80°F) with similar maximums reaching up to 34°C (94°F). However, this month is wetter, recording 198 mm (7.8 in) of rainfall across 22 days, accompanied by a higher humidity level of 82%. For more detailed information, check Lang Son weather in September.
April and October both boast pleasant temperatures, but there are some notable differences between the two months. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). The month sees a moderate amount of rainfall, totaling around 117 mm (4.6 in) over 18 days, while the humidity level hovers at 64%. In contrast, October experiences slightly warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 32°C (90°F), averaged at 23°C (73°F). It also receives more rainfall, totaling 170 mm (6.7 in) over 15 days, and has higher humidity at 77%. For more details on October's climate, you can check the link: Lang Son weather in October.
April and November present distinct weather patterns, with April generally being warmer and wetter than November. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). This month also sees significant rainfall, with 117 mm (4.6 in) recorded over 18 days, resulting in a humidity level of 64%. In contrast, November experiences slightly cooler temperatures, ranging from 9°C (48°F) to 30°C (86°F), with an average temperature of 20°C (68°F). Rainfall in November is much less intense, totaling 39 mm (1.6 in) over only 9 days, leading to a higher humidity of 72%. For more details on November weather in Lang Son, you can visit Lang Son weather in November.
In April, the weather is generally warmer, with minimum temperatures around 10°C (50°F) and daily averages reaching up to 22°C (72°F), peaking at a maximum of 34°C (93°F). This month also sees more rainfall, averaging 117 mm (4.6 in) across approximately 18 days, while humidity hovers around 64%. In contrast, December brings cooler temperatures, with a minimum of 4°C (40°F), an average of 15°C (60°F), and a maximum of 28°C (82°F). Precipitation is significantly lower in December at 51 mm (2.0 in) over just 9 days, accompanied by a higher humidity level of 71%. For a closer look at December's weather specifics, refer to Lang Son weather in December.
As April unfolds in Lang Son, the weather takes on a vibrant character, contrasting sharply with the preceding months. With temperatures soaring to a maximum of 34°C and an average of 22°C, it's a warm transition into the spring season. However, this warmth accompanies considerable precipitation, with rain gracing the area on 18 days throughout the month, contributing to an overall humidity of 64%. This blend of warmth and moisture not only enhances the verdant landscapes but also signals the arrival of a more dynamic weather pattern, setting the stage for what lies ahead. For a closer look at ongoing weather trends, visit Lang Son Climate.