Last updated: August 27, 2025
September in Chiang Khan, Thailand offers a tropical experience characterized by warm temperatures and high humidity. With maximum temperatures reaching 35°C (96°F) and an average hovering around 27°C (82°F), visitors can expect a warm atmosphere ideal for exploring the enchanting landscapes. However, evenings cool down modestly with minimum temperatures dipping to 22°C (72°F). This month is notably rainy, with 253 mm (10.0 in) of precipitation spread over 23 days, so travelers should be prepared for frequent showers amidst the lush scenery. The high humidity levels at 86% accentuate the tropical climate, making it essential for visitors to stay hydrated and plan their activities accordingly.
In September, Chiang Khan experiences a transition into cooler weather, with temperatures ranging from a low of 22°C (72°F) to a comfortable high of 35°C (96°F). As the month progresses, the average temperature settles at 27°C (82°F), showing a slight decrease from the scorching summer months. This pattern indicates a gradual relief from the heat, making September a more pleasant time to explore the town’s natural beauty and cultural heritage. Visitors can expect warmer mornings and milder evenings, perfect for enjoying the scenic riversides and vibrant local markets without the intense heat of the mid-summer months. Overall, September offers a comfortable climate that invites both relaxation and adventure in this picturesque Thai locale.
In September, Chiang Khan experiences significant rainfall, with precipitation reaching an impressive 253 mm (10.0 in), making it one of the wetter months of the year. This marked decline from the summer peak in August is notable, yet it still supports the region's lush landscapes. Rainfall occurs over approximately 23 days, indicating frequent but often brief showers that can energize the local environment. Such trends suggest that while the monsoon season is beginning to wind down, September remains a vital month for replenishing water resources and sustaining agriculture in this scenic Thai town. The shift from the intense rains of July and August to a slightly reduced but still substantial rainfall is characteristic of the region's tropical climate, setting the stage for the drier months ahead.
As summer gives way to the gently cooling breezes of September in Chiang Khan, Thailand, the humidity remains notably high at 86%, a slight dip from the peak of 87% seen in August. This sustained humidity, characteristic of the monsoon season, contributes to the lush landscape and vibrant flora of the region, creating a tropical atmosphere that can feel both invigorating and heavy. The upward trend from the dry months of January through April, where humidity levels hovered around 39% to 52%, reflects the transition into a more humid climate, typical for late monsoon months. As October approaches, humidity levels are expected to decrease to 74%, signaling a gradual but welcome shift towards the drier months ahead.
In September, Chiang Khan, Thailand experiences an UV Index of 14, placing it in the extreme exposure category, with a burn time of just 10 minutes. This trend of high UV levels continues from the previous months, where the UV Index consistently remained at 14 from May through August. Interestingly, while the UV intensity peaks in the mid-year months, it begins to taper off with October’s reading dropping to 12. Visitors and locals alike should take precautions during this time, as the intense sunlight can lead to swift skin damage. For a detailed overview of UV conditions throughout the year, visit Chiang Khan UV Index.
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In September, Chiang Khan basks in a delightful 272 hours of sunshine, a shining continuation of the warm trend seen throughout the year. As the monsoon recedes, this month presents a pleasant balance that follows the peak sunlit days of March and April, which boast over 320 hours. Although September experiences a dip from the summer highs, it still offers significantly more sunlight compared to the cloudier months of August and July. This month’s solar offerings invite locals and visitors alike to enjoy the scenic landscapes and vibrant culture, marking the onset of a transition into the drier season, where sunlight gradually increases again in October and beyond.
As September rolls into Chiang Khan, Thailand, the chances of sunny weather dip significantly, with only a 14% likelihood of clear skies. This marks a notable decline from the sunniest months of the year, such as January and February, where the sun shines brightly 81% and 84% of the time, respectively. Following the intense heat of April and May, which see just a 25% and 37% chance of sun, the monsoon season begins to take its toll in the summer months of June, July, and August, where the likelihood of sunshine falls to a mere 13%. With September continuing this trend, travelers might want to brace for cloudier days, highlighting the contrast between the sun-soaked start to the year and the rain-laden end of the summer.
In September, Chiang Khan enjoys a delightful 12 hours of daylight, maintaining the same duration observed in the preceding months of June, July, and August. This consistent daylight duration reflects a trend of gradually decreasing light as the year progresses, following the long sunny days of summer. As Thailand transitions into the cooler months with October's return to 11 hours, September serves as a bridge, allowing residents and visitors to savor the lingering warmth and vibrant sunsets that define the region's charm at this time of year.
In Chiang Khan, Thailand, the September wind offers a gentle reprieve, with an average speed of 1.4 m/s (3 mph). While this marks a slight dip from the summer months of June and July, where breezes reached up to 2.0 m/s, it reflects a consistent trend of milder winds as the year transitions into the cooler months. From January to September, the winds generally remain moderate, peaking during the summer and gradually tapering off as autumn approaches. This shift not only enhances the region's enchanting landscapes but also invites locals and visitors alike to bask in the serene atmosphere that September brings, making it an ideal time for exploration and relaxation.
Weather in Chiang Khan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chiang Khan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with a minimum of 22°C (72°F), an average of 27°C (82°F), and a maximum reaching up to 35°C (96°F). This month experiences significant rainfall, with a total precipitation of 253 mm (10.0 in) spread over 23 days and a high humidity level of 86%. In contrast, January brings much cooler temperatures, with a minimum of 10°C (50°F), an average of 23°C (73°F), and a maximum similar to September at 35°C (95°F). However, January is much drier, with only 7 mm (0.3 in) of precipitation occurring on just 1 day and a lower humidity of 52%. For more details, check out Chiang Khan weather in January.
In September, the weather is typically hot and humid, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 35°C (96°F) and an average of 27°C (82°F). The month sees significant rainfall, with 253 mm (10.0 in) of precipitation spread over 23 days, contributing to a high humidity level of 86%. In contrast, February offers a more moderate climate, featuring a lower minimum temperature of 13°C (55°F) and an average temperature of 24°C (75°F), with highs reaching up to 37°C (99°F). This month experiences much less rainfall, totaling only 22 mm (0.9 in) over just 2 days, which results in a more comfortable humidity level of 49%. For more detailed weather insights, visit Chiang Khan weather in February.
When comparing the weather in September and March, a few notable differences emerge. September tends to be much more humid, with an average humidity of 86% and frequent rainfall, totaling 253 mm over 23 days. This results in warmer temperatures, with highs reaching up to 35°C (96°F). In contrast, March features a drier climate with only 32 mm of precipitation over about 6 days, lower humidity at 39%, and the potential for hotter temperatures, peaking at 39°C (102°F). For a more detailed look at the conditions in March, you can check out Chiang Khan weather in March.
When comparing the weather in September and April, significant differences emerge. September tends to be warmer, with average temperatures around 27°C (82°F), peaking at a high of 35°C (96°F). However, it is also characterized by high humidity at 86% and frequent rain, receiving 253 mm of precipitation over 23 days. In contrast, April offers a slightly cooler average temperature of 28°C (83°F) but can soar to a high of 41°C (105°F), making it the hotter month overall. The humidity is considerably lower at 40%, and precipitation is minimal at 78 mm across just 12 days. For more detailed insights into April weather, you can visit Chiang Khan weather in April.
When comparing the weather in September and May, we see some notable differences. September features a minimum temperature of 22°C (72°F) and averages 27°C (82°F), with a maximum of 35°C (96°F). The month is also characterized by high humidity at 86% and considerable rainfall, accumulating 253 mm (10.0 in) across 23 days. In contrast, May boasts slightly cooler minimum temperatures at 21°C (70°F) and higher average temperatures of 29°C (84°F), peaking at a sweltering 40°C (105°F). Additionally, May experiences less precipitation, with 171 mm (6.7 in) over 20 days and notably lower humidity at 69%. For a detailed look at the weather in May, check out Chiang Khan weather in May.
In comparing the weather patterns of September and June, September tends to have slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 27°C (82°F), while June sees a minimum of 23°C (74°F) and an average of 29°C (84°F). However, June can reach higher maximum temperatures, peaking at 38°C (101°F), compared to September's maximum of 35°C (96°F). Both months experience significant rainfall, with September receiving 253 mm (10.0 in) over 23 days and June slightly less at 221 mm (8.7 in) over 22 days. Humidity levels are higher in September at 86%, compared to June's 81%. For more specific details, you can check out Chiang Khan weather in June.
When comparing the weather in September and July, both months are warm and humid, but they exhibit some notable differences. In September, the average temperature ranges from a minimum of 22°C (72°F) to a maximum of 35°C (96°F), with an average of 27°C (82°F). The month sees substantial rainfall, with precipitation totaling 253 mm (10.0 in) over 23 days and humidity levels reaching 86%. In contrast, July has slightly higher temperatures, with a minimum of 23°C (74°F), an average of 28°C (83°F), and a maximum of 37°C (99°F). July experiences a bit less rain, with 233 mm (9.2 in) also over 23 days, accompanied by lower humidity at 83%. For more detailed weather information, you can visit Chiang Khan weather in July.
In comparing the weather conditions of September and August, both months show relatively high temperatures and humidity levels typical of the tropical climate. September experiences slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 35°C (96°F), averaging at 27°C (82°F). In contrast, August has a minimum of 23°C (74°F) and a maximum of 36°C (97°F), with an average temperature of 28°C (82°F). Precipitation is higher in August, with 321 mm (12.6 in) falling over 25 days, compared to September's 253 mm (10.0 in) over 23 days. Both months exhibit high humidity, but August holds a marginally higher level at 87%, compared to September's 86%. For more details, you can check Chiang Khan weather in August.
In September, the weather is characterized by warm temperatures with a minimum of 22°C (72°F) and an average of 27°C (82°F), peaking at a high of 35°C (96°F). This month also experiences significant rainfall, with 253 mm (10.0 in) over 23 days, contributing to a high humidity level of 86%. In contrast, October brings slightly cooler temperatures, with a minimum of 19°C (66°F) and an unchanged average of 27°C (80°F), but the maximum can rise to 36°C (96°F). Rainfall decreases to 143 mm (5.6 in) over 17 days, and humidity drops to a more comfortable 74%. For more specific insights, you can visit Chiang Khan weather in October.
In September, the weather is significantly warmer with average temperatures reaching 27°C (82°F) and high humidity levels of 86%. This month also sees a substantial amount of rainfall, totaling 253 mm (10.0 in) over 23 days, making it one of the wetter months of the year. In contrast, November offers a more comfortable climate with lower minimum temperatures of 17°C (62°F) and an average of 25°C (78°F). Additionally, rainfall drops dramatically to just 15 mm (0.6 in) across only 5 days, alongside a noticeable decrease in humidity to 63%. This transition from September to November marks a shift to drier and cooler conditions, making November a more pleasant time to experience the outdoors. For more details on November’s weather, you can check Chiang Khan weather in November.
September and December showcase a striking contrast in weather patterns. September boasts higher temperatures, with daily averages around 27°C (82°F) and the possibility of soaring up to 35°C (96°F), coupled with high humidity levels at 86%. Rain is prevalent during this month, as evidenced by an average precipitation of 253 mm (10.0 in) over 23 days. In contrast, December offers a much cooler climate, with daytime temperatures averaging 22°C (72°F), dropping to a low of 9°C (48°F) at night. The month experiences significantly less rainfall, totaling only 10 mm (0.4 in) over just 2 days, and a lower humidity level of 57%. For more details on December weather, you can check Chiang Khan weather in December.
As September rolls into Chiang Khan, it marks a transition from the sweltering heat of summer to a more humid and wet climate. While temperatures remain relatively warm, averaging around 27°C (82°F), the high humidity at 86% and frequent rain—averaging 253 mm over 23 days—can make the air feel heavier and the atmosphere more refreshing. This rainy month differs greatly from the drier months preceding it, offering a lush landscape and a unique charm. If you're planning a visit, be prepared for the occasional downpour that rejuvenates the vibrant scenery, making it an intriguing time to explore this picturesque town. For more details on the weather patterns, check Chiang Khan Climate.