Last updated: August 28, 2025
April in Son La, Vietnam offers a dynamic climate characterized by a maximum temperature reaching 37°C (99°F) and an average of 23°C (74°F), making it a warm month overall. With minimum temperatures dipping to 11°C (52°F) at night, residents and visitors alike experience a refreshing contrast. This month sees about 103 mm (4.0 in) of precipitation over 13 days, contributing to the lush greenery of the region. Humidity levels hover around 50%, creating a tropical atmosphere that enhances the beauty of Son La's landscape. Whether you are exploring the vibrant culture or the stunning natural surroundings, April provides a unique and inviting climate.
In April, Son La, Vietnam experiences a delightful rise in temperatures, marking a transition into the warmer months. With minimums around 11°C (52°F) and average daytime highs climbing to 37°C (99°F), the month showcases a vibrant climate that beckons outdoor adventures. The average temperature of 23°C (74°F) highlights the comfortable warmth, ideal for exploring the region's stunning landscapes. As the days grow longer and sunnier, the increasing warmth from March signals the onset of a more tropical atmosphere, paving the way for the heat of May. April's pleasant weather truly sets the stage for enjoying Son La's natural beauty and cultural richness.
April marks a significant uptick in rainfall in Son La, Vietnam, with precipitation reaching 103 mm (4.0 inches) over 13 days. This increase not only surpasses the amounts recorded in earlier months, but it also sets the stage for a wetter season ahead, as May follows closely with a similar precipitation total. The arrival of April's rains signifies a transition, moving from the relatively dry spell of January through March, where total precipitation peaked only at 67 mm (2.6 inches) in March. The pattern indicates a gradual escalation of rainfall as the region gears up for the rainy season, showcasing April as a pivotal month in initiating this climatic shift. With lush landscapes emerging, the April showers lay the groundwork for vibrant greenery, making it a transformative period in Son La's weather cycle.
In April, humidity in Son La, Vietnam drops to 50%, marking a significant decline compared to the higher levels of earlier months. Following a trend from March's 57%, this decrease indicates a brief respite before the region transitions into the humid warmth of late spring and summer. As the year progresses, humidity starts to climb again, peaking in the sweltering months of July and August. This fluctuation highlights April as a pivotal moment, where the mild conditions give way to the more oppressive humidity that typically characterizes the later months. This overall pattern showcases Son La's dynamic climate, with April standing out as a time of relative dryness before the onset of lush, moisture-laden weather.
As April arrives in Son La, Vietnam, the UV Index remains highly intense, reflecting a consistent trend observed since March. With an extreme UV Index of 13, sun exposure can lead to burn within just 10 minutes, urging residents and visitors to take necessary precautions. This level of UV radiation is indicative of the region's warmer climate, with similar readings expected as summer approaches in May and June, where the UV Index peaks at 14. The gradual increase from January's UV Index of 8 to the current extreme level underscores the importance of sun safety measures throughout the year. For further insights and daily updates, explore the Son La UV Index.
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In April, Son La, Vietnam, basks in an impressive 259 hours of sunshine, a delightful continuation of the upward trend in daylight hours that began earlier in the year. Following the bright 288 hours recorded in March, April's sunshine still benefits from the lingering warmth of spring, though slightly tempered by the impending onset of the rainy season. The month offers a vibrant atmosphere, inviting outdoor activities and a celebration of nature's beauty as the days grow longer and more luminous. As we look ahead, May promises to shine even brighter with 312 hours of sun, showcasing the region's charm and enhancing its appeal for visitors and locals alike.
In Son La, Vietnam, April marks a noticeable dip in sunny weather, with the chance of sunshine dropping to 33%. This decline follows a gradual increase in sun exposure during the earlier months, where optimism for clear skies rises to 48% in March. However, the trend takes a sharp turn as the region heads into the rainy season, with May and June further decreasing the likelihood of sunny days to 38% and a stark 10%, respectively. Despite this April lull, the chances of basking in the sun remain better than mid-year, so plan your visits accordingly to enjoy the fleeting moments of warmth before the clouds gather.
In Son La, Vietnam, the month of April marks a delightful continuation of the spring season with 12 hours of daylight, mirroring the enchanting month of March. As the days lengthen gradually from January's 10 hours, the trend becomes clear—each month transitions into longer daylight, reaching a peak of 13 hours in May through July. Following the vibrant summer, August through September witnesses a gentle decline back to 12 hours, before tapering off towards the shorter daylight of winter months. This cyclical pattern not only illuminates the beauty of each season but also enriches the local culture and lifestyle throughout the year.
As April graces Son La, Vietnam, the winds whisper at an average speed of 1.5 m/s (3 mph), marking a slight drop from the previous months. This gentle breeze signals the transition into the warmer season, as wind speeds have shown a gradual decline since the brisker months of January and February. While still mild, the winds hint at a calming energy that envelops the landscape, inviting both locals and travelers to enjoy the unfolding beauty of spring. The serene winds of April may not be the strongest of the year, but they carry with them the promise of renewal and vibrant life that flourishes in the lush surroundings of Son La.
Weather in Son La varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Son La, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in April is noticeably warmer compared to January, with daily temperatures ranging from a minimum of 11°C (52°F) to a maximum of 37°C (99°F), leading to an average temperature of 23°C (74°F). In contrast, January temperatures are cooler, averaging 17°C (62°F) with minimum and maximum values of 6°C (43°F) and 31°C (88°F), respectively. Additionally, April experiences more precipitation, totaling 103 mm (4.0 in) over 13 days, while January only sees 34 mm (1.4 in) across just 5 days. The humidity is also higher in January at 63%, compared to April's 50%. For a more detailed look at January weather in Son La, visit Son La weather in January.
In comparing April and February weather, April boasts significantly warmer temperatures, with minimums around 11°C (52°F) and maximums reaching up to 37°C (99°F), while February’s temperatures range from a minimum of 7°C (45°F) to a maximum of 33°C (92°F). Additionally, April experiences higher average temperatures of 23°C (74°F) compared to February's average of 18°C (64°F). However, February is marked by a higher humidity level at 65% versus April's 50%, and it also sees considerably less precipitation, with only 25 mm (1.0 in) over 3 days compared to April's 103 mm (4.0 in) over 13 days. For those interested in the specific conditions of February, you can find more details here: Son La weather in February.
In comparing the weather between March and April, April tends to be warmer overall, with average temperatures reaching 23°C (74°F) compared to March's average of 22°C (71°F). The maximum temperatures in April can soar up to 37°C (99°F), significantly hotter than March's peak of 34°C (93°F). However, April experiences greater precipitation, with a total of 103 mm (4.0 in) over 13 days, compared to March's 67 mm (2.6 in) over just 9 days. Additionally, humidity is slightly lower in April at 50%, compared to 57% in March, making it feel a bit more comfortable despite the higher temperatures. For more detailed information, you can check Son La weather in March.
In April, the weather features a moderate range of temperatures, with a minimum of 11°C (52°F) and an average high of 37°C (99°F). The month experiences 103 mm (4.0 in) of precipitation over 13 days, accompanied by a relatively lower humidity level of 50%. In contrast, May brings warmer conditions, with a minimum temperature of 16°C (61°F) and an average high reaching 38°C (101°F). The amount of rainfall remains similar to April at 102 mm (4.0 in), but it occurs over 16 days, resulting in increased humidity levels of 68%. For more detailed insights about the weather conditions, you can check Son La weather in May.
April and June present contrasting weather experiences. In April, temperatures range from a minimum of 11°C (52°F) at night to a comfortable average of 23°C (74°F) during the day, peaking at a hot 37°C (99°F). This month also sees moderate rainfall, with a total of 103 mm (4.0 in) spread over 13 rainy days, making the humidity relatively low at 50%. In contrast, June exhibits a warmer climate with nighttime temperatures settling at a minimum of 21°C (70°F) and an average of 27°C (80°F). The maximum reaches the same high of 37°C (99°F) as in April, but the month is significantly wetter, receiving 178 mm (7.0 in) of precipitation over 24 days, leading to increased humidity levels of 79%. For more detailed weather insights, you can check Son La weather in June.
In April, the weather features a wider temperature range with minimums around 11°C (52°F) and maximums reaching up to 37°C (99°F), resulting in an average temperature of 23°C (74°F). The month experiences moderate precipitation, totaling 103 mm (4.0 in) over 13 days, paired with relatively low humidity at 50%. In contrast, July sees significantly warmer temperatures, with minimums of 21°C (70°F) and maximums around 35°C (95°F), averaging 26°C (79°F). However, July is characterized by much heavier rainfall, accumulating 285 mm (11.2 in) across 23 days, along with high humidity levels peaking at 91%. For a detailed look at July weather, you can check out Son La weather in July.
In comparing the weather of April and August, it is evident that there are significant differences. April features a temperature range from a cool 11°C (52°F) at night to a warm 37°C (99°F) during the day, with an average of 23°C (74°F). It experiences moderate humidity at 50% and sees around 103 mm (4.0 in) of precipitation over 13 days. In contrast, August is considerably warmer, with lows of 21°C (70°F) and highs reaching 33°C (92°F), averaging 26°C (78°F). The month is much wetter, receiving 322 mm (12.7 in) of rain across 26 days, and the humidity rises significantly to 92%. For more details on August weather, you can refer to Son La weather in August.
April and September in Son La present distinct weather patterns. In April, temperatures range from a minimum of 11°C (52°F) to a maximum of 37°C (99°F), with an average of 23°C (74°F). The month sees 103 mm (4.0 in) of precipitation over 13 days, accompanied by moderate humidity at 50%. In contrast, September features milder temperatures, with a minimum of 17°C (63°F), an average of 25°C (78°F), and a maximum reaching 34°C (94°F). Additionally, September experiences increased rainfall, totaling 121 mm (4.8 in) over 19 days, and significantly higher humidity at 82%. For more detailed information on the weather in September, you can visit Son La weather in September.
April and October exhibit some similarities in weather patterns, but they also showcase distinct differences. Both months share an average temperature of around 23°C (74°F) and experience the same level of precipitation at 103 mm (4.0 in) over approximately 13 days. However, April tends to be hotter, with maximum temperatures soaring to 37°C (99°F) compared to October's peak of 33°C (91°F). Additionally, October is characterized by higher humidity levels at 76%, making the air feel more saturated than in April, which has a humidity rate of 50%. For a deeper look into October weather specifics, visit Son La weather in October.
April weather is characterized by warmer temperatures, with average highs reaching up to 37°C (99°F) and a relatively low humidity of 50%. However, it also brings significant rainfall, with about 103 mm (4.0 in) spread across 13 days. In contrast, November offers cooler temperatures, with an average high of 31°C (89°F) and a higher humidity level of 72%, but it experiences much less rainfall—only 18 mm (0.7 in) over 4 days. For a detailed look at November conditions, you can check Son La weather in November.
April and December present contrasting weather patterns. In April, temperatures range from a minimum of 11°C (52°F) to a scorching maximum of 37°C (99°F), with an average of 23°C (74°F). This month sees substantial precipitation, averaging 103 mm (4.0 in) over 13 days and a moderate humidity level of 50%. In contrast, December experiences much cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 31°C (89°F), averaging 16°C (62°F). Precipitation drops significantly to 25 mm (1.0 in) spread over just 4 days, with humidity rising to 68%. For more insights, check out Son La weather in December.
As April graces Son La, the weather transforms into a delightful blend of warmth and humidity, standing out from the cooler months that precede it. With the average temperature rising, days are often warmed by the sun, reaching their peak, while evenings provide a refreshing respite. Rainfall begins to make more frequent appearances, marking a shift towards the wet season; this uptick in precipitation contrasts sharply with the drier months earlier in the year. The overall 50% humidity also adds to the atmosphere, creating a lush environment that thrives in anticipation of the upcoming summer. For those curious about the nuances of Son La's climate, more detailed insights can be found here: Son La Climate.