Last updated: August 21, 2025
September in Champasak, Laos brings a tropical tapestry of weather, characterized by a maximum temperature of 33°C (91°F) and an average of 26°C (78°F), interspersed with cooler nights averaging 21°C (71°F). This month is marked by significant rainfall, with a staggering 432 mm (17.0 in) of precipitation over 27 days, lending to the lush greenery of the region. Humidity levels soar to an average of 91%, creating a steamy atmosphere that envelops the landscape. Visitors can expect a vibrant environment, though it’s wise to prepare for the frequent showers that define this period.
In September, Champasak, Laos, experiences a warm transition as temperatures remain relatively stable, with a minimum of 21°C (71°F) and a comfortable average of 26°C (78°F). Daytime highs can reach up to 33°C (91°F), creating a pleasant environment for outdoor activities and exploring the region's stunning landscapes. As the month progresses, it becomes clear that the temperatures are beginning to cool slightly from the peak warmth of April and May, setting the stage for the more moderate conditions of October. Overall, September offers visitors a sweet spot in the year where the tropical heat is still inviting yet begins to hint at the cooler months to come.
September in Champasak, Laos, marks the tail end of the rainy season, characterized by significant precipitation. This month alone sees an impressive 432 mm (17.0 in) of rain over approximately 27 days, indicating a continuation of the heavy downpours experienced in August and July. These figures highlight a consistent trend of intensified rainfall, with September maintaining a substantial average close to its predecessors, solidifying the region's reputation for robust monsoonal activity. As the landscape thrives under the nurturing embrace of water, the transition into October brings a slight reduction in both the amount of rainfall and days it falls, signaling the gradual shift towards drier conditions in the months ahead.
In September, the humidity in Champasak, Laos, remains high at 91%, continuing the trend established over the previous months of the rainy season. The rise in humidity begins in June, peaking in August, and although there is a slight decrease from last month, September still holds onto the significant moisture characteristic of this time of year. This elevated humidity fosters a lush, tropical environment, making the region vibrant yet potentially uncomfortable for those unaccustomed to the sweltering conditions. As autumn approaches, the moisture levels begin to taper off slightly, hinting at a gradual transition to drier months ahead.
In September, Champasak, Laos, maintains a UV Index of 14, placing it firmly in the extreme exposure category where safe sun enjoyment becomes crucial. With a burn time of just 10 minutes, the sun's intensity continues to reflect the trends observed in preceding months. From January's very high index peak of 10 to consistent extreme levels beginning in late February, the UV Index has remained alarmingly elevated through summer and into early autumn. This persistent intensity highlights the importance of sun protection during this time of year. To learn more about the UV Index in Champasak, visit Champasak UV Index.
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September in Champasak, Laos, offers a charming interlude of 264 hours of sunshine, a delightful blend of warm days that hints at the transition between the wet and dry seasons. This month follows the summer peak, where July and August take a dip in sunlight, showcasing a natural ebb and flow in weather patterns that keeps the region lush and vibrant. As the year progresses, September experiences a modest recovery in sunlight after the lower counts of the rainy season, setting the stage for a gradual increase into October with its 271 hours of radiant bliss. This cyclical rhythm of light not only enriches the landscape but also mirrors the cultural vibrancy found in Champasak, making every hour of sunshine a chance to explore the beautiful lowlands and vibrant villages.
In September, Champasak, Laos experiences a notable decline in the likelihood of sunny weather, with only a 12% chance of sun. This marks a stark contrast to the brighter months earlier in the year, such as January and February, which enjoy probabilities of 70% and 77% respectively. As the monsoon season progresses, the sunshine becomes increasingly scarce, dipping sharply from the 37% seen in April to a mere 9% in August. The trend indicates that as summer transitions into fall, travelers to Champasak should prepare for a significant reduction in sunny days, favoring more likelihood of cloud cover and rain.
In Champasak, Laos, the rhythm of daylight unfolds beautifully throughout the year, with September standing out as a month of consistency, enjoying 12 hours of daylight. Following the progressive increase in light from March to August, where the days extend to their fullest, September maintains this bright ambiance, allowing for ample time to explore the region's stunning landscapes and vibrant culture. As the year transitions toward October, daylight begins to recede again to 11 hours, creating a gentle ebb in the daylight hours. This steady pattern of longer days earlier in the year and a slight tapering as the seasons change reflects the region's tropical climate, making September an ideal time for travelers to bask in the abundant sunlight before the cooler months approach.
As September arrives in Champasak, Laos, the gentle breeze remains consistent, with an average wind speed of 1.3 m/s (3 mph). This month marks a slight uptick from the preceding August, continuing the trend of stable winds that have characterized the region throughout the year. Interestingly, the wind speed shows a gradual decline from the higher averages seen in the early months, particularly from January through March, where it reached 1.6 m/s. As the year transitions towards its end, the winds stay subdued, with a notable drop in November, highlighting the soothing consistency of Champasak's climate. Ultimately, September embodies the tranquillity of this tropical destination, making it an ideal time to enjoy the region's natural beauty under a gentle sky.
Weather in Champasak varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Champasak, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F). This month is marked by high humidity at 91% and significant rainfall, experiencing around 432 mm (17.0 in) over 27 days. In contrast, January offers cooler temperatures, with a minimum of 10°C (51°F) and an average of 23°C (75°F), while still reaching up to 33°C (91°F) on warmer days. Precipitation is minimal in January, averaging only 10 mm (0.4 in) over just 2 days, and humidity drops to a more moderate 74%. For a detailed look at January's climate, you can visit Champasak weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 33°C (91°F), accompanied by high humidity at 91% and significant rainfall of 432 mm (17.0 in) over 27 days. In contrast, February offers much drier weather with only 9 mm (0.4 in) of precipitation over just 1 day. The temperatures in February are milder, with a minimum of 13°C (55°F) and a maximum of 34°C (94°F), and the humidity drops to a comfortable 65%. For further details on February weather, you can check Champasak weather in February.
September and March exhibit contrasting weather patterns. September typically experiences a higher humidity level of 91% with average temperatures around 26°C (78°F) and a maximum of 33°C (91°F). The month is also marked by significant rainfall, receiving approximately 432 mm (17.0 in) over 27 days. In contrast, March has a lower humidity of 53% and milder precipitation, receiving only 27 mm (1.0 in) over 5 days. The temperatures in March can peak at a higher maximum of 35°C (96°F), while the minimum temperature is slightly cooler at 17°C (62°F). For a more detailed look at March weather, visit Champasak weather in March.
When comparing the weather between September and April, notable differences emerge. September is characterized by higher humidity levels at 91%, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 33°C (91°F). This month also experiences significant rainfall, totaling 432 mm (17.0 in) over 27 days, which creates a lush, albeit soggy, environment. In contrast, April offers a warmer atmosphere with temperatures peaking at 37°C (99°F) and a more comfortable average of 27°C (81°F). Additionally, April sees drastically reduced precipitation at only 53 mm (2.1 in) over 11 days, leading to lower humidity levels around 49%. For a more detailed look at weather patterns, you can explore Champasak weather in April.
When comparing the weather in September to that in May, notable differences emerge. September experiences higher humidity at 91% and significantly more rainfall, with 432 mm over 27 days. In contrast, May tends to be drier, receiving only 114 mm of rain over 20 days and boasting a lower humidity level of 72%. Temperature-wise, May has slightly warmer average highs, reaching up to 36°C (97°F), compared to September's maximum of 33°C (91°F). For a closer look at May's weather in this region, you can visit Champasak weather in May.
When comparing the weather in September and June, both months exhibit warm average temperatures, but with notable differences in precipitation and humidity. September tends to have a slightly cooler minimum temperature of 21°C (71°F) compared to June's 22°C (72°F), while the maximum temperatures are similar, reaching 33°C (91°F) in September and 34°C (93°F) in June. However, September experiences significantly higher precipitation, with 432 mm (17.0 in) falling over 27 days, in contrast to June's 220 mm (8.7 in) over 26 days. The humidity is also higher in September at 91%, compared to 86% in June, contributing to a more sultry atmosphere. For a more detailed look, you can check Champasak weather in June.
In comparing the weather of September and July, both months exhibit similar temperature ranges, with September experiencing a minimum of 21°C (71°F) and a maximum of 33°C (91°F), slightly higher than July’s minimum of 21°C (70°F) and maximum of 32°C (90°F). However, September tends to be wetter, with an average precipitation of 432 mm (17.0 in) over 27 days, while July has a slightly higher precipitation total of 480 mm (18.9 in) across 28 days. Both months share a high humidity level of 91%, contributing to a muggy feel. For more detailed information on July's weather, you can visit Champasak weather in July.
In comparing the weather of September and August, both months exhibit similar temperature ranges, with September having a slightly higher average of 26°C (78°F) compared to August's 25°C (78°F). The maximum temperatures are also slightly elevated in September, reaching up to 33°C (91°F) versus August’s peak of 32°C (89°F). However, September experiences more precipitation overall, with 432 mm (17.0 in) over 27 days, while August has 465 mm (18.3 in) across 28 days. Humidity levels remain high in both months, with September at 91% and August at 93%. For a more detailed look at August weather specifics, you can refer to Champasak weather in August.
In September, the weather is characterized by higher temperatures, with minimums reaching 21°C (71°F), averaging 26°C (78°F), and maximums hitting 33°C (91°F). The month sees significant rainfall, with 432 mm (17.0 in) of precipitation over 27 days and a high humidity level of 91%. In contrast, October experiences slightly cooler temperatures, with minimums at 18°C (65°F), an average of 25°C (78°F), and maximums of 32°C (90°F). The precipitation decreases to 345 mm (13.6 in) over 23 days, and humidity drops to 88%. For more detailed information on October weather in this region, check out Champasak weather in October.
September and November present distinct weather characteristics. In September, the temperature typically ranges from a minimum of 21°C (71°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F). This month experiences considerable rainfall, totaling 432 mm (17.0 in) over 27 days, and high humidity levels at 91%. In contrast, November sees a slight decrease in temperatures, with a minimum of 17°C (62°F) and a maximum of 32°C (90°F), averaging 25°C (76°F). Precipitation drops significantly to 99 mm (3.9 in) over just 13 days, and humidity levels also decrease to 85%. For more detailed information, you can check Champasak weather in November.
September and December present a striking contrast in weather conditions. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 33°C (91°F), with an average of 26°C (78°F). The month is characterized by high humidity at 91% and significant rainfall, totaling 432 mm (17.0 in) over 27 days. In contrast, December has milder temperatures, with a minimum of 12°C (54°F) and a maximum of 32°C (90°F), averaging 23°C (74°F). Rainfall significantly decreases to just 24 mm (0.9 in) over 6 days, and humidity levels lower to 82%. For more detailed weather information specific to December, you can check Champasak weather in December.
September in Champasak presents a unique weather profile, characterized by higher humidity levels and significant precipitation, making it notably wetter compared to other months. With rain gracing nearly every day of the month, the lush landscape flourishes under the average temperature that comfortably sits around 26°C (78°F). While the maximum daytime heat can soar up to 33°C (91°F), the frequent showers provide much-needed relief from the muggy atmosphere. This combination creates a vibrant yet humid experience, ideal for those who appreciate the lush greenery that emerges during this period. For a deeper understanding of seasonal variations, visit Champasak Climate.