Last updated: August 21, 2025
April in Vientiane, Laos brings a warm embrace, with maximum temperatures soaring to 42°C (107°F) and an average of 29°C (85°F), making it one of the hotter months of the year. As the city transitions into the rainy season, residents can expect about 70 mm (2.8 in) of rainfall over 11 days, providing a brief respite from the heat. With humidity levels hovering around 40%, the air feels sultry yet manageable. Travelers planning a visit should prepare for a mix of sunny afternoons and occasional rain, making it an intriguing time to experience the vibrant life and landscapes of Vientiane.
In April, Vientiane experiences a significant rise in temperatures, signaling the heart of the dry season. With minimums around 17°C (63°F) and average highs reaching a sweltering 42°C (107°F), this month marks one of the hottest in the year. The average temperature hovers at a comfortable yet warm 29°C (85°F), perfect for those who enjoy vibrant outdoor activities, although visitors should be prepared for the intense midday sun. This upward trend from the previous months illustrates a jump from March's highs of 40°C (104°F), making April an ideal time for early morning or late afternoon explorations. As the month progresses, the heat remains consistent, hinting at the approaching humidity of May, while evenings provide a brief respite at cooler temperatures. Whether you're soaking up the culture or the sun, the warmth of April transforms Vientiane into a lively hub of activity.
April marks a significant increase in precipitation in Vientiane, Laos, with 70 mm (2.8 in) of rainfall spread over 11 days, setting the stage for the region's transition into its wetter months. This surge follows the steady climb from 41 mm (1.6 in) in March, highlighting a clear trend toward a more humid climate as the dry season fades. As the city braces for the lushness of May, where rainfall skyrockets to 204 mm (8.0 in) over 21 days, April serves as a pivotal moment, inviting a burst of life and vibrancy that foreshadows the monsoon season ahead.
In April, Vientiane experiences a slight increase in humidity, reaching 40% after the much drier months of January through March. This early hint of moisture foreshadows the dramatic rise that follows, with May shooting up to 69% as the wet season approaches. The gradual ascent in humidity throughout these months illustrates a significant shift, moving from the crispness of early spring to the lush, tropical atmosphere of summer. As April transitions into May, residents and visitors alike can sense the anticipation of the heavy rains that mark the onset of the monsoon season, creating a vibrant, yet humid backdrop to life in the bustling capital.
In April, Vientiane experiences one of its highest UV Index readings at 14, categorizing it as extreme and prompting a burn time of just 10 minutes. This peak in UV intensity signals a consistent trend that begins in February and continues through the summer months, with UV Index values hovering around 14 from April to August. As the sun begins its ascendance in intensity during this time, it's crucial for residents and visitors alike to take precautions when outdoors. Staying protected becomes essential not only in April but throughout this sun-drenched period. For more detailed information about UV levels in Vientiane, check out Vientiane UV Index.
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In April, Vientiane basks in a delightful 309 hours of sunshine, making it a wonderful time to explore the city. This bright month continues the upward trend following March's 318 hours, demonstrating that spring in Laos is nothing short of radiant. Interestingly, April's sunshine levels match those of May, suggesting that as the dry season transitions into the warmer months, sunlight remains generous. Looking ahead, while June sees a dip to 271 hours, the overall pattern highlights that early spring and late autumn offer the best sun-soaked days for visitors and locals alike. Enjoying the warm April rays provides an ideal backdrop for adventures, adventures that shine as brightly as the sun itself.
As we transition into April in Vientiane, Laos, the opportunity for sunny days significantly diminishes, with only a 29% chance of sunshine. This trend marks a striking departure from the preceding months, where full sunny skies prevail, particularly in January and February, boasting remarkable chances of 82% and 87% respectively. Following the vibrant days of March with a 67% likelihood of sun, April is the beginning of a notable shift towards more overcast conditions. The chance for brightness continues to decline through May and into the monsoon season, highlighting the importance of April as a pivotal month where sunshine begins to wane. As such, it’s wise to embrace the warmth of the earlier months before the clouds roll in and the rains take hold.
In Vientiane, Laos, the month of April signals a delightful balance in daylight, with 12 hours of sun illuminating the city each day. This consistent daylight duration, which mirrors March’s offerings, sets a foundation for the gradual increase in daylight that follows in the hotter months of May and June. As the year progresses, Vientiane transitions from the shorter days in January and February—both at 11 hours—into a brighter, sunnier season, peaking in mid-year with a full 13 hours of daylight in June and July. This harmonious pattern not only enhances outdoor activities but also contributes to the vibrant lifestyle that flourishes under the Laotian sun.
As April sweeps into Vientiane, Laos, the gentle caress of the wind begins to soften, yielding an average speed of 1.4 m/s (3 mph). This slight decrease from the earlier months signifies the transition into the warmer season, where the air becomes more stagnant. Following a pattern established in the preceding months, April's winds tend to lag behind the more vibrant gusts of January through March, indicating a calm before the lushness of May. Interestingly, the breezy whispers of the previous months, with average speeds hovering close to 2.0 m/s, set the stage for a stiller atmosphere in the sultry days ahead. As the landscape warms up, this subtle shift in wind speed reminds us of the serenity that characterizes the arrival of the late spring.
Weather in Vientiane varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Vientiane, focusing on differences in temperature, rainfall, humidity, and UV levels.
April in Vientiane is characterized by significantly warmer temperatures, with a notable average of 29°C (85°F) and highs reaching up to 42°C (107°F). In contrast, January offers a much cooler climate, with average temperatures around 24°C (75°F) and maximums of 35°C (95°F). Additionally, April experiences more precipitation, with 70 mm (2.8 in) occurring over 11 days, while January is quite dry, accumulating just 6 mm (0.2 in) over only 1 day. The humidity is also lower in April at 40%, compared to a relatively higher 52% in January. For further details, check out Vientiane weather in January.
Comparing the weather in April and February reveals notable differences in temperature and humidity. April experiences much warmer temperatures, with a minimum of 17°C (63°F) and an average of 29°C (85°F), while February has a cooler minimum of 13°C (55°F) and an average of 25°C (76°F). Furthermore, April sees higher maximum temperatures peaking at 42°C (107°F) compared to February's maximum of 38°C (100°F). In terms of precipitation, April is wetter, averaging 70 mm (2.8 in) over 11 days, whereas February is relatively dry with only 17 mm (0.7 in) of rain falling over just 1 day. Additionally, humidity levels are higher in February at 49%, compared to April's average of 40%. For more detailed information on February weather, you can refer to Vientiane weather in February.
In comparing the weather of April and March, we see a slight increase in temperatures, with April recording an average temperature of 29°C (85°F) compared to March’s 28°C (82°F). April also peaks higher, reaching a maximum of 42°C (107°F), while March's maximum temperature is a bit lower at 40°C (104°F). However, April sees a significant increase in precipitation, totaling 70 mm (2.8 in) over 11 days, compared to March's 41 mm (1.6 in) over just 6 days. Despite the increase in rainfall, both months have similar humidity levels, with April at 40% and March at 39%. For more detailed information, you can check Vientiane weather in March.
In April, Vientiane experiences a notable temperature range with minimums of 17°C (63°F) and maximums reaching up to 42°C (107°F), while maintaining an average temperature of 29°C (85°F). The month also sees a moderate amount of precipitation, totaling 70 mm (2.8 in) over 11 days, with humidity hovering around 40%. In contrast, May brings slightly warmer minimum temperatures at 22°C (71°F) but a similar maximum of 41°C (107°F), keeping the average consistent at 29°C (85°F). However, May is significantly wetter, with precipitation increasing to 204 mm (8.0 in) over 21 days and humidity rising to 69%. For a more detailed comparison, visit Vientiane weather in May.
April and June present distinct weather characteristics in Vientiane. In April, temperatures range from a minimum of 17°C (63°F) to a maximum of 42°C (107°F), with an average of 29°C (85°F). The month experiences moderate precipitation of 70 mm (2.8 in) over 11 days and relatively low humidity at 40%. In contrast, June's weather is noticeably warmer, with minimum temperatures rising to 24°C (75°F) and maximum temperatures peaking at 39°C (102°F), while still averaging 29°C (85°F). June is much wetter, with a significant increase in precipitation to 309 mm (12.2 in) spread over 25 days, and the humidity level also rises substantially to 81%. For more detailed insights on the weather during this month, check out Vientiane weather in June.
April and July present quite distinct weather patterns. In April, temperatures range from a minimum of 17°C (63°F) to a maximum of 42°C (107°F), with an average of 29°C (85°F) and relatively low humidity at 40%. The month sees about 70 mm (2.8 inches) of precipitation over 11 days, allowing for some dry spells amidst the heat. In contrast, July experiences a milder temperature range, with a minimum of 25°C (76°F) and a maximum of 37°C (99°F), while the average temperature remains similar at 29°C (84°F). However, July is characterized by significantly higher humidity at 83% and much greater rainfall, totaling 331 mm (13.0 inches) spread over 26 days. This creates a wetter and more humid environment, making for a stark difference between the two months. For more information, check out Vientiane weather in July.
When comparing the weather in April and August, distinct differences emerge. April tends to be hotter, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 42°C (107°F) and an average of 29°C (85°F). It experiences relatively low humidity at 40% and moderate precipitation of 70 mm (2.8 in) over 11 days. In contrast, August is cooler, with a minimum temperature of 24°C (75°F) and a maximum of 37°C (98°F), averaging 28°C (83°F). However, August is characterized by significantly higher humidity at 87% and considerable rainfall of 402 mm (15.8 in) over 26 days. For more information, you can check the detailed forecasts at Vientiane weather in August.
April and September exhibit distinct weather patterns that significantly affect daily life. In April, temperatures soar with a minimum of 17°C (63°F) and can reach a scorching maximum of 42°C (107°F), while the average sits at 29°C (85°F). The month experiences relatively low precipitation at 70 mm (2.8 in) over about 11 days and maintains a humidity level of 40%. Conversely, September brings milder temperatures with a minimum of 23°C (73°F) and a maximum of 37°C (98°F), along with an average temperature of 28°C (83°F). However, this month is characterized by much higher rainfall, totaling 265 mm (10.4 in) over 24 days, and a noticeable increase in humidity, reaching 86%. This stark contrast in rainfall and humidity highlights the transition from the dry heat of April to the wet and humid conditions of September. For more detailed insights on September's climate, you can check Vientiane weather in September.
In April, the weather features warmer temperatures, with a minimum of 17°C (63°F) and a maximum reaching up to 42°C (107°F). This month sees an average temperature of 29°C (85°F) and experiences relatively low humidity at 40%, but it does have some rain, with 70 mm (2.8 in) falling over 11 days. In contrast, October offers more moderate temperatures, with a minimum of 20°C (68°F) and a maximum of 36°C (98°F). While it has a slightly lower average temperature of 28°C (82°F), October is characterized by higher humidity at 74% and increased precipitation, totaling 129 mm (5.1 in) over 15 days. For more on October weather specifically, you can check Vientiane weather in October.
April and November in Vientiane present distinct weather patterns. April boasts significantly higher temperatures, with an average of 29°C (85°F) and maximums soaring up to 42°C (107°F), while November experiences milder conditions, averaging 26°C (79°F) and peaking at 36°C (98°F). Additionally, April sees more precipitation, accumulating 70 mm (2.8 in) over 11 days, in contrast to November's much drier climate with only 10 mm (0.4 in) across just 3 days. The humidity also varies, as November holds a higher average humidity at 63%, compared to April's 40%. For more detailed insights, check out Vientiane weather in November.
April and December present contrasting weather conditions. In April, temperatures can soar with a minimum of 17°C (63°F) and can reach a sweltering maximum of 42°C (107°F), making the month notably hot with an average of 29°C (85°F). The humidity is relatively low at 40%, but the month does see considerable precipitation, totaling 70 mm (2.8 in) over about 11 days. In stark contrast, December features milder temperatures, ranging from a minimum of 9°C (48°F) to a maximum of 35°C (95°F), with an average temperature of 23°C (74°F). The month experiences very little rain, with only 7 mm (0.3 in) of precipitation across just one day, while humidity rises to 57%. For more specific details, check out Vientiane weather in December.
In April, Vientiane experiences a vibrant shift as temperatures soar, reaching their peak with an average of 29°C (85°F), and occasionally dipping to a refreshing 17°C (63°F) at night. This month stands out with its brisk afternoons and warm nights, compelling residents and visitors alike to embrace the outdoors. While precipitation is moderate with about 70 mm (2.8 in) falling over 11 days, humidity remains relatively low at 40%, making the heat more bearable compared to the stickier summer months that follow. As the dry season nears its end, April is a transitional period, offering a perfect blend of warmth and lingering dry conditions. For a deeper understanding of what to expect throughout the year, check out Vientiane Climate.