Last updated: August 21, 2025
In July, Vientiane experiences a tropical climate characterized by high temperatures and significant rainfall. The maximum temperature can reach an intense 37°C (99°F), while the average temperature hovers around a warm 29°C (84°F). Nights bring some relief with a minimum temperature of 25°C (76°F). This month also marks one of the wettest periods, with a staggering 331 mm (13.0 in) of precipitation over approximately 26 days, leading to an average humidity of 83%. Visitors should prepare for a mix of sweltering heat and frequent downpours, making it essential to stay hydrated and plan activities accordingly.
In July, Vientiane experiences a subtle shift in its tropical climate as the city settles into the heart of the rainy season. With minimum temperatures hovering around 25°C (76°F), the days remain fairly warm but are softened by increased humidity. The average temperature stays steady at 29°C (84°F), a slight dip from the preceding months, while maximum temperatures reach a comfortable 37°C (99°F). This smooth transition reflects July as a time of lush greenery and vibrant landscapes, inviting residents and visitors alike to explore the natural beauty that thrives under the warm, wet skies. As the month progresses, the balance of warmth and cooler rain offers a refreshing contrast, making Vientiane an intriguing destination during this time of year.
In July, Vientiane experiences a significant peak in precipitation, receiving 331 mm (13.0 in) of rain over 26 days. This marks a continuation of the region’s wet season, peaking after the heavy rains of June, which themselves contributed 309 mm. The consistent rainfall leading up to this month underscores a trend of increasing precipitation, with totals rising sharply from 204 mm in May to July's record. As the monsoon's influence intensifies, humidity levels also soar, creating an atmosphere ripe for lush greenery but also potential flooding. This pattern continues into August, which witnesses the highest rainfall of the year at 402 mm, further emphasizing a remarkably rainy summer season in this vibrant Laotian capital.
In July, Vientiane experiences a peak in humidity, reaching a significant 83%. This month marks a notable shift from the drier conditions of earlier months, as humidity levels gradually rise from January's comfortable 52%. The journey from spring's freshness—where March and April hover around 39% and 40%—to the summer's sultry embrace is stark, with June's already high 81% serving as a precursor to July's intensity. Following this peak, the humidity continues to remain elevated into August at 87%, but begins to taper off as the region transitions into autumn. This trend reveals Vientiane's dynamic climate, where vibrant, tropical conditions dominate the summer months, creating a lush environment that is both rich and, at times, stifling.
In July, Vientiane experiences a UV Index of 14, placing it within the extreme exposure category and indicating a burn time of just 10 minutes. This trend of high UV levels is consistent, as the city endures extreme UV conditions from February through October. With slightly fluctuating indices peaking at 14 in both July and April, it's crucial for residents and visitors alike to take appropriate precautions, such as seeking shade or applying sunscreen frequently. As the summer months see sustained high levels of UV radiation, understanding the implications of this index is vital for outdoor enjoyment and health. For more details, check the comprehensive Vientiane UV Index.
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In Vientiane, Laos, July sees an average of 269 hours of sunshine, marking a slight dip compared to the sunnier months of March and April, which enjoy the highest levels at 318 and 309 hours, respectively. As the rainy season begins to settle in, July's brightness is overshadowed by the lush greenery that comes with the precipitation. This trend of decreasing sunlight continues into August, where the hours drop further to 249. Notably, July's sunshine hours remain relatively consistent when compared to the preceding month of June, which had 271 hours. As the heart of the rainy season, July offers a unique blend of warmth and emerging vitality, inviting visitors to experience the captivating beauty of this tranquil city amidst the rainfall.
When considering the likelihood of sunny weather in July in Vientiane, Laos, it’s clear that the month is among the cloudiest of the year, with only a 15% chance of sunshine. This trend is consistent with the preceding months, as sunlight dwindles significantly from early spring through the heart of the rainy season. In contrast, the year begins on a brighter note, with January and February boasting chances of sunshine around 82% and 87%, respectively. As the wet season arrives, particularly in the summer months, the chances of sunny days sharply decline, plunging to a mere 13% in June and hovering just slightly above that in July. Therefore, if you're planning a trip during this time, be prepared for a high likelihood of rain rather than basking in the sun.
In Vientiane, Laos, July marks a peak in daylight duration with 13 hours of sunlight, a continuation of the trend observed since June. As the year progresses, daylight gradually increases from 11 hours in January and February to 12 hours in March through May, culminating in the summer months of June and July. This influx of sunlight fosters vibrant outdoor activities and cultural festivities, making July an ideal time for exploration and enjoyment of the city's rich landscapes. As the seasons shift into August, daylight begins to recede to 12 hours, hinting at the approaching transition toward shorter days in autumn.
As July unfolds in Vientiane, Laos, the average wind speed hovers around 1.8 m/s (4 mph), maintaining a gentle embrace that has characterized the region since the start of the year. This slight uptick from June’s 1.7 m/s suggests a subtle resurgence of breezy days, a refreshing contrast to the stillness that may precede the monsoon. Interestingly, July's wind speeds mirror those of both January and February, offering a taste of consistency amid the shifting seasons. As we move towards August, the winds are expected to slightly taper off, yet they will continue to provide a welcome respite from the Southeast Asian heat. Overall, July's breezes reflect not only natural patterns but also the comforting rhythm of life in Vientiane.
Weather in Vientiane varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Vientiane, focusing on differences in temperature, rainfall, humidity, and UV levels.
In Vientiane, the weather in July is marked by high temperatures, with a minimum of 25°C (76°F) and an average of 29°C (84°F), reaching up to 37°C (99°F) on the hottest days. The month is also characterized by significant rainfall, with 331 mm (13.0 in) of precipitation spread over 26 days, and high humidity at 83%. In contrast, January offers a much drier and cooler climate; temperatures range from a minimum of 10°C (51°F) to an average of 24°C (75°F), peaking at 35°C (95°F). With only 6 mm (0.2 in) of precipitation over just 1 day and a lower humidity at 52%, January presents a more comfortable atmosphere. For more details, check out Vientiane weather in January.
In Vientiane, July is characterized by high temperatures and substantial rainfall, with temperatures ranging from a minimum of 25°C (76°F) to a maximum of 37°C (99°F) and an average of 29°C (84°F). The month experiences a significant 331 mm (13.0 in) of precipitation spread over 26 days, accompanied by high humidity at 83%. In contrast, February brings milder weather with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 38°C (100°F) and an average of 25°C (76°F). February is notably drier, with only 17 mm (0.7 in) of precipitation occurring over just one day and lower humidity levels at 49%. For more details, check out the full breakdown Vientiane weather in February.
In Vientiane, July is characterized by a warm and humid climate, with average temperatures around 29°C (84°F) and high humidity levels of 83%. This month also brings significant rainfall, averaging 331 mm (13.0 in) over 26 days, making it one of the wettest periods of the year. In contrast, March features warmer temperatures, with a maximum reaching up to 40°C (104°F), but it has a much drier climate, with only 41 mm (1.6 in) of precipitation across just 6 days and a lower humidity level of 39%. For more detailed information, you can check Vientiane weather in March.
In comparing the weather of July and April, we can observe significant differences in temperature and precipitation. July tends to be more humid, with average temperatures around 29°C (84°F), but it also experiences much higher precipitation, totaling 331 mm (13.0 in) over 26 rainy days. In contrast, April features warmer maximum temperatures reaching up to 42°C (107°F) and lower average humidity at 40%, along with minimal rainfall of just 70 mm (2.8 in) over 11 days. This highlights that while April can be hotter, July brings increased humidity and significantly more rain, impacting overall comfort levels. For a detailed overview of temperature and climate patterns, you can check Vientiane weather in April.
In May, the weather displays slightly cooler minimum temperatures of 22°C (71°F) compared to July's 25°C (76°F), while both months share an average temperature of around 29°C (85°F in May vs. 84°F in July). However, July experiences more extreme highs, peaking at 37°C (99°F), while May can reach an impressive maximum of 41°C (107°F). Precipitation is notably higher in July, with 331 mm (13.0 in) spread over 26 days, compared to May's 204 mm (8.0 in) on 21 days. Additionally, July's humidity is significantly higher at 83%, compared to May's 69%. For more detailed information, you can check out Vientiane weather in May.
In comparing the weather between June and July, both months exhibit warm temperatures, with July seeing a minimum of 25°C (76°F) and an average of 29°C (84°F), while June's minimum is slightly lower at 24°C (75°F), but it boasts a higher maximum of 39°C (102°F). Precipitation is more prevalent in July with 331 mm (13.0 in) over 26 days, compared to June's 309 mm (12.2 in) over 25 days. Additionally, humidity is slightly higher in July at 83%, compared to June’s 81%. For more detailed information, you can check Vientiane weather in June.
In July, temperatures in Vientiane ranged from a minimum of 25°C (76°F) to a maximum of 37°C (99°F), with an average temperature of 29°C (84°F). The month was marked by significant rainfall, totaling 331 mm (13.0 in) across 26 days, and humidity levels averaged 83%. In contrast, August sees slightly cooler average temperatures, with a minimum of 24°C (75°F) and an average of 28°C (83°F), while still reaching the same maximum of 37°C (98°F). However, August experiences even higher precipitation, amounting to 402 mm (15.8 in) over the same number of rainy days, coupled with increased humidity at 87%. For more detailed information, check out Vientiane weather in August.
In comparing the weather patterns of July and September, we find that both months experience relatively high temperatures, with September featuring slightly lower averages. July showcases a minimum temperature of 25°C (76°F) and an average of 29°C (84°F), while September has a minimum of 23°C (73°F) and an average of 28°C (83°F). Notably, both months can reach maximum temperatures of 37°C (99°F in July and 98°F in September).
Precipitation levels also differ; July receives more rainfall at 331 mm (13.0 in) across 26 days, compared to September's 265 mm (10.4 in) over 24 days. Interestingly, humidity remains high in both months, recorded at 83% in July and slightly higher at 86% in September. For more detailed insights into September's climate, you can visit Vientiane weather in September.
July and October present contrasting weather patterns in Vientiane. In July, temperatures range from a minimum of 25°C (76°F) to a maximum of 37°C (99°F), with an average temperature of 29°C (84°F). This month is characterized by high humidity at 83% and significant rainfall, accumulating 331 mm (13.0 in) over 26 days. In contrast, October experiences slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 36°C (98°F), averaging 28°C (82°F). The precipitation drops significantly to 129 mm (5.1 in) over 15 days, accompanied by lower humidity levels at 74%. For a deeper dive into October's weather specifics, check out Vientiane weather in October.
In July, the weather is typically hot and humid, with temperatures ranging from a minimum of 25°C (76°F) to a maximum of 37°C (99°F) and an average of 29°C (84°F). This month experiences significant rainfall, totaling about 331 mm (13.0 in) over 26 days, resulting in a humidity level of around 83%. In contrast, November brings a more temperate climate, with temperatures dropping to a minimum of 17°C (63°F) and rising to a maximum of 36°C (98°F), averaging at 26°C (79°F). The precipitation in November is minimal, with only 10 mm (0.4 in) over just 3 days, and the humidity decreases to 63%, making for a much drier and more comfortable experience. For more detailed information, you can check out Vientiane weather in November.
July and December showcase a stark contrast in weather patterns. In July, temperatures range from a minimum of 25°C (76°F) to a scorching maximum of 37°C (99°F), with an average temperature of 29°C (84°F). The month is marked by high humidity at 83% and significant rainfall, totaling 331 mm (13.0 in) across 26 days, leading to a very wet atmosphere. In contrast, December experiences much cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 35°C (95°F), averaging 23°C (74°F). Precipitation drops dramatically to just 7 mm (0.3 in) over 1 day, accompanied by a lower humidity level of 57%. For more detailed insights on December weather, you can check Vientiane weather in December.
In July, Vientiane experiences a distinctive shift in weather patterns, marked by high humidity and significant rainfall. The temperatures reach their peak, with warmer days contrasting sharply with the cooler evenings, creating a dynamic climate. With nearly 26 days of rain and an average precipitation total of 331 mm, this month significantly differs from drier periods, adding a lush vibrancy to the landscape. Residents and visitors alike should prepare for both sunny spells and sudden showers, making it an exciting, albeit wet, time to explore the city. For a deeper understanding of what to expect, check out the comprehensive details at Vientiane Climate.