Last updated: August 27, 2025
As September unfolds in Pai, Thailand, temperatures vary between a maximum of 33°C (91°F) and a minimum of 19°C (66°F), with an average hovering around 24°C (76°F). This month is characterized by notable precipitation, with 220 mm (8.7 in) of rain falling over the course of 26 rainy days, contributing to the region's lush greenery. The humidity remains high at 83%, creating a tropical atmosphere. Visitors can expect vibrant landscapes and a refreshing yet damp climate, perfect for immersion in nature's beauty.
As September unfolds in Pai, Thailand, temperatures reflect a gentle transition towards the cooler months. With minimums settling at 19°C (66°F) and averages around 24°C (76°F), the weather remains comfortably warm yet inviting. The maximum temperatures hover around 33°C (91°F), similar to the previous months, creating a blend of warm afternoons and cooler evenings that encourage exploration and relaxation. This slight dip from the peak summer heat hints at the approaching autumn, making September an ideal time for visitors to enjoy Pai's lush landscapes and vibrant culture before the brisk air of October sets in.
September marks a significant transition in Pai, Thailand's wet season, with an impressive 220 mm (8.7 in) of precipitation over 26 days. This month continues the trend of abundant rainfall that characterizes the region from June to August, although it sees a notable reduction compared to the preceding month’s record 346 mm (13.6 in). As the lush landscapes of Pai remain vibrant and alive, the frequent showers provide a refreshing backdrop for visitors and locals alike. With the rain tapering off in October, September acts as a bridge—very much part of the wet season's climax—ensuring that nature flourishes before the drier months ahead.
September in Pai, Thailand, marks a transition as humidity levels remain notably high at 83%, reminiscent of the preceding months of intense wetness. Following August's peak of 91%, the humidity slightly eases but still creates a lush, vibrant atmosphere. This month, along with the summer months of June and July, showcases Pai's tropical climate, fostering a rich environment. As the year progresses, there's a clear shift from the drier conditions of the earlier months, where humidity dipped as low as 36% in April. As October approaches, a noticeable decline in humidity to 67% suggests the onset of a more comfortable season, providing a perfect opportunity for visitors to enjoy Pai’s stunning natural beauty.
As September rolls into Pai, Thailand, residents and visitors alike should be aware of the extreme UV Index rating of 14, which indicates a burn time of just 10 minutes under the midday sun. This month continues the trend of high UV exposure seen since March, when the index surged to 13. From May through August, the UV Index peaked at an intense 15, and while there's a slight dip in September, the risk remains significant. Those planning outdoor activities should take precautions, as the protective measures required mirror those of the peak summer months. For more insights on UV trends in this stunning destination, check out Pai UV Index.
UV Risk Categories
As September unfolds in Pai, Thailand, visitors can expect a delightful balance of sunshine and tranquility, with 266 hours of sunshine gracing the skies. This beautiful month follows the summer's decline, showcasing a subtle rebound from August’s 226 hours. Understanding the trends throughout the year, September sits comfortably between the vibrant sunlit months of March and May, which boast over 330 hours each. With the rainy season easing off and the landscape flourishing, September offers an ideal mix of comfortable weather and breathtaking scenery, making it a perfect time for both adventure and relaxation in this picturesque haven.
In Pai, Thailand, September marks a transition into the rainy season, with the chance of sunny weather significantly dropping to just 15%. Following a pattern seen throughout the year, the months leading up to September, such as March and February, exhibit a much higher likelihood of sunshine, boasting 84% and 77% respectively. As the rainy season sets in, the stark contrast is evident with August and September often shrouded in clouds and rain, reflecting the region's 10% chance for dry, sunny days during the height of summer's humidity. As travelers plan their visits, they should be prepared for the wetter conditions, which are a characteristic feature of Pai's weather in September.
In September, Pai, Thailand enjoys a captivating daylight duration of 12 hours, continuing the trend of abundant sunlight seen throughout the summer months. The daylight hours peak in May through July, when residents and visitors can bask in 13 hours of golden sunshine each day. As the year progresses into the fall, there’s a gradual decline, with August and September both offering a pleasing 12 hours. This shift signals the approach of shorter days, as October ushers in a slight reduction to 11 hours. Overall, Pai's daylight patterns reflect the beautiful transition of the seasons, making it an enticing destination for those who love to soak up sunshine year-round.
As September unfolds in Pai, Thailand, the gentle breeze paints a serene backdrop to this picturesque town. With an average wind speed of 1.2 m/s (3 mph), the air remains pleasantly calm, reminiscent of the preceding months. This subtle shift reflects a slight decrease from the summer's winds, which peaked at 1.6 m/s (4 mph) in June, creating a tranquil atmosphere that's perfect for leisurely exploration. As the seasons transition towards October, the winds continue to soften, clearing the way for the stunning autumn landscapes that beckon adventurers to indulge in Pai’s enchanting scenery.
Weather in Pai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Pai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is significantly warmer and more humid compared to January, with minimum temperatures averaging around 19°C (66°F) and peaks reaching up to 33°C (91°F). This month is marked by high precipitation, averaging 220 mm (8.7 in) over approximately 26 days, contributing to a humidity level of 83%. In contrast, January experiences cooler temperatures, with a minimum of 7°C (44°F) and an average of 19°C (67°F), while maximum temperatures can still reach 31°C (89°F). Rainfall is sparse in January, totaling only 22 mm (0.9 in) over just 4 days, and the humidity drops to a more comfortable 51%. For a detailed look at January conditions, check out Pai weather in January.
The weather in September is characterized by warm temperatures, with a minimum of 19°C (66°F) and an average of 24°C (76°F), reaching a high of 33°C (91°F). This month sees significant precipitation, with 220 mm (8.7 in) over 26 days, resulting in high humidity levels at 83%. In stark contrast, February experiences cooler weather, with temperatures ranging from a minimum of 7°C (46°F) to an average of 21°C (70°F) and a maximum of 34°C (93°F). Notably, February has minimal rainfall, totaling just 8 mm (0.3 in) over only one day, and lower humidity at 46%. For more detailed information, you can check Pai weather in February.
September and March present contrasting weather conditions. September features warmer temperatures with a minimum of 19°C (66°F) and a maximum of 33°C (91°F), while March exhibits a wider temperature range, starting from a cooler minimum of 11°C (52°F) and peaking at a scorching 38°C (101°F). In September, the weather is characterized by high humidity at 83% and significant rainfall, accumulating 220 mm over 26 days, making it one of the wettest months. In stark contrast, March experiences very little precipitation, with only 4 mm recorded over just one day and a much drier humidity level of 38%. For additional details on March weather, you can check Pai weather in March.
In comparing the weather of September and April, it's clear that both months present distinct characteristics. September experiences a milder range of temperatures with a minimum of 19°C (66°F) and an average of 24°C (76°F), while April can swing much higher, boasting an impressive maximum of 38°C (101°F) and an average of 26°C (78°F). However, September is notably wetter, with a significant precipitation of 220 mm (8.7 in) over 26 days, leading to high humidity levels of 83%. In contrast, April sees much less rain, totaling just 76 mm (3.0 in) over 9 days, and a much drier atmosphere with only 36% humidity. For more specific details about the weather in April, you can check Pai weather in April.
September and May exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 33°C (91°F), with an average of 24°C (76°F). The month sees significant precipitation, totaling 220 mm (8.7 in) over 26 days, along with high humidity at 83%. In contrast, May offers warmer conditions, featuring a minimum of 18°C (65°F) and a maximum of 38°C (101°F), with an average temperature of 26°C (79°F). Precipitation in May is less, amounting to 152 mm (6.0 in) over 18 days, and the humidity is notably lower at 63%. For more detailed insights, check out Pai weather in May.
In September, the weather maintains a warm climate with minimum temperatures around 19°C (66°F) and an average of 24°C (76°F), mirroring June's averages closely. In both months, the maximum temperatures peak at 33°C (91°F in September and 92°F in June), providing similar levels of daytime warmth. However, September experiences slightly higher rainfall, with 220 mm (8.7 in) spread across 26 days, compared to June's 234 mm (9.2 in) over 27 days. Humidity levels are also quite comparable, with September at 83% and June at 81%. For more detailed insights into the weather during June, you can explore this link: Pai weather in June.
In comparing the weather of September and July, we see that both months experience similar average temperatures, hovering around 24°C (76°F). However, July tends to have slightly higher minimum temperatures, with an average low of 20°C (68°F) compared to September's 19°C (66°F). July also experiences greater precipitation, with 286 mm (11.3 in) over 29 days, while September receives 220 mm (8.7 in) across 26 days. Despite this, both months maintain a high humidity level of 83%. For more detailed insights on July weather, you can check Pai weather in July.
In comparing the weather between September and August, both months showcase similar average temperatures, with September ranging from a minimum of 19°C (66°F) to a maximum of 33°C (91°F) and August having slightly warmer nights at a minimum of 20°C (68°F). However, September experiences significantly lower precipitation, totaling 220 mm (8.7 in) over 26 days, compared to August's 346 mm (13.6 in) over 30 days. Humidity also drops in September to 83%, while August remains quite humid at 91%. For more detailed information, you can check out Pai weather in August.
In September, the weather is typically warmer with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 33°C (91°F) and an average of 24°C (76°F). This month experiences high humidity at 83% and significant rainfall, totaling 220 mm (8.7 in) over 26 days. In contrast, October sees slightly cooler temperatures, with a minimum of 17°C (63°F), an average of 23°C (74°F), and a maximum of 32°C (90°F). Additionally, precipitation decreases to 148 mm (5.8 in) spread over 20 days, and humidity drops to 67%. For more specific details about October weather, you can check Pai weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 33°C (91°F), with an average of 24°C (76°F). This month is characterized by high humidity levels at 83% and significant rainfall, totaling 220 mm (8.7 in) over 26 days. In contrast, November sees a cooler climate, with temperatures dipping to a minimum of 13°C (55°F) and a maximum of 31°C (88°F), averaging 22°C (72°F). Rainfall is considerably reduced, with only 39 mm (1.5 in) over 8 days, and humidity levels drop to 60%. For a more detailed look at November's weather in Pai, you can visit Pai weather in November.
September and December exhibit striking contrasts in weather patterns. In September, temperatures are notably warm, with a minimum of 19°C (66°F) and an average of 24°C (76°F), peaking at a scorching 33°C (91°F). However, this month is also marked by high humidity at 83% and substantial rainfall, with 220 mm (8.7 in) of precipitation spread over 26 days. In contrast, December brings cooler temperatures with a minimum of 5°C (42°F) and an average of 19°C (66°F), reaching a maximum of 30°C (87°F). This month experiences much less rain, totaling just 17 mm (0.7 in) over only 3 days, along with a lower humidity level of 56%. For more insights on the weather during this month, check out Pai weather in December.
As you explore September weather in Pai, prepare for a notable shift compared to other months. With the temperature peaks reaching a warm 33°C (91°F) but averaging around a comfortable 24°C (76°F), the warmth is accompanied by the region’s highest rainfall of the year. Expect persistent rainfall throughout the month, as 83% humidity blankets the area, making it feel notably more humid than during the dry months. This lush atmosphere enhances the natural beauty of Pai, inviting you to experience a refreshing escape. For a deeper understanding of what to expect year-round, visit Pai Climate.