Last updated: August 21, 2025
Experience the dynamic weather of Vientiane, Laos in March, where temperatures can soar to a staggering 40°C (104°F), with an average of 28°C (82°F) providing warm, tropical days. The evenings offer a refreshing contrast, dipping to a pleasant 17°C (63°F). Expect occasional rain with a total precipitation of 41 mm (1.6 in) over approximately 6 days, adding to the vibrant landscape. Despite some rainfall, the average humidity remains relatively low at 39%, making March an inviting time to explore this captivating city.
In March, Vientiane, Laos, begins to warm up significantly, signaling the approach of the dry season. With temperatures ranging from a minimum of 17°C (63°F) to a sizzling maximum of 40°C (104°F), the average temperature reaches a comfortable 28°C (82°F). This month marks a notable increase from the cooler temperatures of January and February, especially as the landscape shifts towards the heat of April. As the days grow longer and sunnier, March offers a delightful blend of warmth without the oppressive heat that follows, making it an ideal time for outdoor exploration and experiencing the vibrant culture of Vientiane.
March marks a notable shift in Vientiane's weather pattern, as the city experiences a jump in precipitation to 41 mm (1.6 in), significantly up from 17 mm (0.7 in) in February. This increase is accompanied by a rise in the number of rainy days to 6, suggesting that March serves as a precursor to the wet season. The rains begin to nourish the landscape, paving the way for an impending deluge in the following months. With April's rainfall expected to escalate even further to 70 mm (2.8 in) and 11 rainy days, March acts as a gentle reminder of the vibrant, lush greenery that is soon to envelop the region, as the transition toward a more humid climate accelerates.
In Vientiane, Laos, March marks a significant shift in humidity, boasting a low of 39%, the driest month before the wet season begins. This drop from February's 49% is indicative of the transition into the hotter months, as the city prepares for the impending increase in moisture that will peak during the monsoon season. The relative humidity starts to rise again in April at 40%, setting the stage for a sharp escalation through the following months. Comparatively, the humidity levels will climb dramatically by May, reaching 69%, and continue to surge throughout the summer, with July and August hitting 83% and 87%, respectively. The trend clearly illustrates how Vientiane shifts from the dry comfort of early spring into the lush, humid richness of its tropical climate.
In March, Vientiane experiences an escalating UV Index of 13, classified as extreme, which means the risk of harm from unprotected sun exposure is significant. With a burn time of just 10 minutes, this month marks a peak in UV intensity that follows February's already high index of 11. The trend towards higher UV levels continues into April, peaking at 14 and suggesting March is part of an intensifying pattern that persists through the dry season. Consequently, sun safety precautions become essential during this time. For more detailed insights, visit the Vientiane UV Index.
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Amidst the vibrant backdrop of Vientiane, March emerges as a true highlight in the sunshine calendar, boasting an impressive 318 hours of sunlight. This marks a notable increase from February's 292 hours, reinforcing March as the pinnacle of brightness as the dry season reaches its zenith. Following this peak, April and May, while still radiant with 309 hours, begin to hint at a gradual transition into the wetter months. The sun's embrace starts to wane slightly in the summer, evident in the reduced hours in June and July, where daylight dips to 271 and 269 hours, respectively. This trend paints a clear picture of March as not just a month of abundant sunshine, but as a pivotal moment of warmth and light before the tropical rains begin to weave their annual tapestry over Laos.
As March unfolds in Vientiane, Laos, the likelihood of sunny weather drops to 67%, a notable shift from the preceding months where the chance of sunshine is considerably higher, peaking at 87% in February. This trend marks the beginning of a transition into the rainy season, which continues through April and beyond, where the chances further diminish to a mere 29%. While March still offers a fair share of sunny days, it serves as a gentle reminder that the sunny, dry days of winter are giving way to the more humid and unpredictable weather of the upcoming months. Enjoying the last glimpses of sunshine in March could be the perfect opportunity to partake in outdoor activities before the rains set in.
As March unfolds in Vientiane, Laos, residents and visitors alike are greeted with an invigorating increase in daylight, enjoying a full 12 hours of sunlight each day. This marks a delightful shift from the more consistent 11 hours seen in January and February, signaling the approach of longer, brighter days ahead. With April and May maintaining this 12-hour daylight rhythm, it's clear that spring is ushering in a season of warmth and vitality. Following this peak, daylight gradually extends to a maximum of 13 hours in June and July, before tapering off as the year progresses. This gradual transition offers a beautiful progression through the changing seasons, inviting exploration and outdoor activities under the abundant sunshine.
As March arrives in Vientiane, the winds whisper softly, with an average speed of 1.8 m/s (4 mph), mirroring the gentle breezes of February. This steady wind pattern hints at a transition leading into the warmer months. While the wind tends to decrease slightly in the following months, dropping to 1.4 m/s (3 mph) in April and then further still in May, the early spring months maintain a pleasant airflow, encouraging outdoor explorations. Interestingly, the wind picks up again during the summer months, reflecting the region's dynamic weather patterns. Overall, March serves as a serene reminder of the calm before the heat, inviting both locals and visitors to enjoy the beautiful landscapes of Laos.
Weather in Vientiane varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Vientiane, focusing on differences in temperature, rainfall, humidity, and UV levels.
March weather in Vientiane is noticeably warmer than in January, with minimum temperatures starting at 17°C (63°F) compared to January's cooler 10°C (51°F). The average temperature in March reaches up to 28°C (82°F), while January maintains a milder average of 24°C (75°F). Additionally, March experiences a higher maximum temperature of 40°C (104°F) versus January's peak of 35°C (95°F). Precipitation in March is also greater, with 41 mm (1.6 in) over 6 days, compared to January's minimal 6 mm (0.2 in) in just 1 day. Furthermore, March has a lower humidity level at 39%, in contrast to January's higher humidity at 52%. For more detailed information, check out Vientiane weather in January.
March brings warmer temperatures compared to February, with average highs of 28°C (82°F) in March versus 25°C (76°F) in February. The maximum temperature in March can reach up to 40°C (104°F), a notable increase from February's peak of 38°C (100°F). Precipitation is more frequent in March, with 41 mm (1.6 in) falling over 6 days, compared to just 17 mm (0.7 in) over 1 day in February. Additionally, humidity levels are lower in March at 39%, while February experiences higher humidity at 49%. For more details, you can check out this link: Vientiane weather in February.
March and April show a noticeable increase in temperature and precipitation, with April generally being warmer and wetter. In March, temperatures range from a minimum of 17°C (63°F) to a maximum of 40°C (104°F), with an average temperature of 28°C (82°F) and a total precipitation of 41 mm (1.6 in) over 6 days. In contrast, April sees a slight rise with a minimum of 17°C (63°F) and a maximum of 42°C (107°F), yielding an average of 29°C (85°F) and a higher precipitation level of 70 mm (2.8 in) over 11 days. The humidity remains relatively similar at 39% in March and 40% in April. For more detailed insights, check out Vientiane weather in April.
March and May exhibit distinct weather patterns, showcasing the transition from the dry season to the wet season. In March, temperatures range from a minimum of 17°C (63°F) to a maximum of 40°C (104°F), with an average of 28°C (82°F). The month sees low precipitation, totaling 41 mm (1.6 in) spread over just 6 days, accompanied by relatively low humidity at 39%.
In contrast, May brings warmer temperatures, with a minimum of 22°C (71°F) and a slightly higher average of 29°C (85°F), peaking at 41°C (107°F). Precipitation significantly increases to 204 mm (8.0 in) over 21 days, leading to much higher humidity levels at 69%. This shift not only affects daily comfort but also signals the onset of the rainy season in the region. For more detailed information, you can check out Vientiane weather in May.
In March, the weather tends to be warmer with a minimum temperature of 17°C (63°F) and an average high of 40°C (104°F), making it a hot month overall. Precipitation levels are relatively low at 41 mm (1.6 in), and only about 6 days see rain, resulting in a humidity level of 39%. In contrast, June experiences a more humid climate, with a minimum temperature of 24°C (75°F) and a slightly lower maximum of 39°C (102°F) on average. However, the rain is much more prevalent, with a significant 309 mm (12.2 in) of precipitation spread over 25 days, leading to a much higher humidity level of 81%. For more details on the weather in June, you can visit Vientiane weather in June.
March and July exhibit striking contrasts in weather conditions. In March, temperatures range from a comfortable 17°C (63°F) at night to a scorching 40°C (104°F) during the day, with an average of 28°C (82°F). The month experiences relatively low precipitation, with just 41 mm (1.6 in) over six days and a humidity level of 39%. In contrast, July features warmer nights with a minimum temperature of 25°C (76°F) and a milder maximum of 37°C (99°F), while maintaining a similar average of 29°C (84°F). However, July is much wetter, receiving a significant 331 mm (13.0 in) of rainfall over 26 days, coupled with high humidity at 83%. For more detailed insights into the weather in July, you can check Vientiane weather in July.
In March, the weather is characterized by a minimum temperature of 17°C (63°F) and an average of 28°C (82°F), reaching highs of up to 40°C (104°F). The month experiences relatively low precipitation, with 41 mm (1.6 in) spread over just 6 days and humidity at 39%. In contrast, August offers a milder average temperature of 28°C (83°F) but starts at a higher minimum of 24°C (75°F), with maximum temperatures reaching 37°C (98°F). However, August is significantly wetter, receiving 402 mm (15.8 in) of rain across 26 days and a much higher humidity level at 87%. For more detailed information, you can check this link: Vientiane weather in August.
The weather in March and September presents a stark contrast in Vientiane. March offers warmer temperatures with a minimum of 17°C (63°F) and a maximum of 40°C (104°F), while remaining relatively dry with only 41 mm (1.6 in) of precipitation over approximately six days and a humidity level of 39%. In comparison, September is notably cooler with a minimum of 23°C (73°F) and a maximum of 37°C (98°F), but it also sees significant rainfall, accumulating 265 mm (10.4 in) over 24 days, resulting in much higher humidity at 86%. The abundance of rain in September suggests a much wetter and more humid atmosphere, making it quite different from the dry heat of March. For more details, you can check Vientiane weather in September.
March and October showcase distinctively different weather patterns. In March, temperatures range from a minimum of 17°C (63°F) to a maximum of 40°C (104°F), with an average of 28°C (82°F). The month experiences relatively low humidity at 39% and only 41 mm (1.6 in) of precipitation over around 6 days. In contrast, October features slightly warmer mornings with a minimum temperature of 20°C (68°F), and while the average remains the same at 28°C (82°F), the maximum drops to 36°C (98°F). October is significantly wetter, accumulating 129 mm (5.1 in) of rainfall over 15 days, and the humidity rises to 74%. For more details, visit Vientiane weather in October.
In comparing the weather of March and November, it's evident that March tends to be hotter, with average temperatures reaching up to 28°C (82°F) and maximums soaring to 40°C (104°F). The month experiences relatively low precipitation of 41 mm across six days, along with lower humidity at 39%. In contrast, November has a milder climate, with an average temperature of 26°C (79°F) and maximums of 36°C (98°F). Notably, November sees significantly less precipitation at just 10 mm over three days and higher humidity at 63%. For more details, check out Vientiane weather in November.
In March, the weather is noticeably warmer, with temperatures ranging from a minimum of 17°C (63°F) to a scorching maximum of 40°C (104°F), making it one of the hotter months of the year. The average temperature of 28°C (82°F) is accompanied by relatively low humidity at 39% and a higher chance of precipitation, with 41 mm (1.6 in) expected over about 6 days. In contrast, December offers a much more temperate climate, with temperatures dipping to a minimum of 9°C (48°F) and averaging around 23°C (74°F). The maximum temperature reaches 35°C (95°F), but significantly less rainfall—only 7 mm (0.3 in) over just 1 day—and a higher humidity level at 57% leads to a more comfortable atmosphere. For a detailed overview of what to expect, check out Vientiane weather in December.
In March, Vientiane begins to heat up, with temperatures rising significantly compared to the cooler months that precede it. The city typically reaches a maximum of 40°C, marking a clear shift towards the dry season, yet the average remains a comfortable 28°C. Although precipitation is relatively low, with only a handful of rainy days, the humidity hovers around 39%, creating a warm, balmy atmosphere. This transitional month presents a unique blend of warmth and dryness, making it distinct from the wetter and cooler periods. For more insights into what to expect, visit Vientiane Climate.