Last updated: August 27, 2025
In September, Surat Thani, Thailand, experiences a tropical climate characterized by warm temperatures and high humidity. The maximum temperature reaches a sweltering 34°C (94°F), while the average temperature sits comfortably at 28°C (82°F), with nighttime lows around 24°C (76°F). This month also marks a significant increase in precipitation, totaling 164 mm (6.5 in) over 24 days, making it one of the wetter months of the year. With an average humidity level of a soaring 87%, visitors should prepare for a humid tropical ambiance, perfect for those seeking a lush, vibrant landscape.
In September, Surat Thani experiences warm and humid conditions, with minimum temperatures hovering around 24°C (76°F) and averages settling at approximately 28°C (82°F). The maximum temperatures peak at 34°C (94°F), slightly cooler than the preceding months of July and August, which both hit highs of 36°C (97°F). This trend indicates a gradual shift towards slightly less intense heat as the region transitions into the tail end of the wet season. While the humidity remains high, September's temperatures offer a comforting consistency, making it a tranquil time to explore the lush landscapes and vibrant culture of this beautiful part of Thailand.
In September, Surat Thani experiences a notable increase in precipitation, averaging 164 mm (6.5 in) over 24 days of rainfall, marking a shift toward the peak of the rainy season. This substantial amount is characteristic of the transitional climate, as the intensity builds from the relatively milder rains seen in August. As residents prepare for the wetter conditions, the rainfall often transforms the lush landscapes into vibrant green vistas, creating an alluring backdrop amid the frequent downpours. This trend of increasing precipitation continues into the following months, with October and November poised to deliver even more substantial rainfall, highlighting the region's dynamic climate throughout the latter part of the year.
In September, Surat Thani, Thailand, typically experiences a significant embrace of humidity, registering at 87%. This figure follows a gradual upward trend that starts around May, where the humidity rises to 77%, ultimately peaking in the late summer months. The atmosphere becomes noticeably muggy during this period, particularly in August with its high of 88%. As the monsoon season progresses, this consistent high humidity from June to September creates a lush, vibrant landscape, though it can be challenging for those unaccustomed to such damp conditions. As the year transitions to the drier months ahead, humidity levels slightly decrease but remain relatively high, underscoring Surat Thani's tropical climate.
In September, Surat Thani, Thailand, continues to experience an extreme UV Index of 14, maintaining a consistent trend seen throughout the year. This high level of UV exposure means that sunburn can occur in as little as 10 minutes, urging residents and visitors alike to take precautions when outdoors. Notably, the UV Index remains stable from August through October, indicating a persistent intensity that reflects the region's tropical climate. As you plan your activities, be sure to stay informed about the UV levels to protect your skin. For more information, check the Surat Thani UV Index.
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September in Surat Thani, Thailand, enjoys a delightful average of 270 hours of sunshine, making it a wonderful time to bask in the tropical warmth. While the month sees a slight dip compared to the vibrant sunshine of earlier months like March with its peak of 344 hours, it still offers a generous dose of sun. This pattern reflects a gradual transition towards the rainier season that begins to unfold in October, but September retains a lovely balance between sunny days and the approaching clouds. With just a hint of humidity in the air, it’s an ideal month for travelers and locals alike to explore the beauty of this lush region before the rains arrive, reveling in the last whispers of the dry season.
In Surat Thani, Thailand, the likelihood of sunny weather dramatically diminishes as the year progresses, particularly in September, where the chance of sunshine drops to a mere 10%. This decline is part of a broader trend, as the months leading up to September—such as April and May—start relatively bright but quickly give way to the rainy season. August, for instance, has only 7% sunny days, indicating a significant shift toward overcast skies. Following September, the prospects remain bleak with October at 9% and November plummeting further to 6%. Thus, if you’re planning a visit during this time, it’s best to pack your umbrella and prepare for a very wet experience.
In September, Surat Thani enjoys a consistent 12 hours of daylight, mirroring the trend seen from April through August. This steadiness is indicative of the region's tropical climate, where daylight duration remains fairly uniform throughout the year. Following September, daylight begins to taper off sharply as October approaches, returning to 11 hours. This gradual transition creates a rhythm in the changing seasons, allowing residents and visitors alike to fully embrace the vibrant activities that daylight brings during the peak of Thailand’s lush green landscapes.
In September, Surat Thani experiences a gentle breeze with an average wind speed of 2.4 m/s (5 mph), marking one of the calmer months of the year. This slight dip in wind activity follows a summer of moderate winds that peaked in July and August at 3.3 m/s (7 mph). As the month transitions into the cooler season, October sees a slight recovery, rising to 2.6 m/s (6 mph). Overall, from January to December, the wind pattern indicates a gradual increase in speed towards the year's end, with December boasting the strongest winds at 4.0 m/s (9 mph). This seasonal fluctuation not only enhances the region's tropical allure but also invites visitors to experience the serene yet dynamic beauty of Surat Thani's climate.
Weather in Surat Thani varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Surat Thani, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Surat Thani showcase distinct weather patterns. In September, the temperatures range from a minimum of 24°C (76°F) to a maximum of 34°C (94°F), with an average of 28°C (82°F). This month experiences considerable rainfall, with 164 mm (6.5 in) spread across 24 days, contributing to a high humidity level of 87%. In contrast, January offers slightly cooler temperatures, with a minimum of 23°C (74°F) and a maximum of 32°C (90°F), averaging at 27°C (81°F). Precipitation is reduced to 137 mm (5.4 in) over just 13 days, resulting in a lower humidity of 72%. For more details, check out Surat Thani weather in January.
In September, the weather tends to be warmer and more humid, with minimum temperatures around 24°C (76°F) and highs peaking at 34°C (94°F). The month experiences significant rainfall, averaging 164 mm (6.5 in) over 24 days, resulting in a high humidity level of 87%. In contrast, February offers a slightly cooler experience, with minimum temperatures dropping to 21°C (71°F) and maximums reaching 33°C (92°F). Rain is minimal during this month, with only about 28 mm (1.1 in) of precipitation over just 6 days, and humidity levels are more comfortable at 68%. For a detailed look at February weather, visit Surat Thani weather in February.
In comparing the weather between September and March, September tends to be more humid and rainy. With temperatures ranging from a minimum of 24°C (76°F) to a maximum of 34°C (94°F), the average temperature is around 28°C (82°F). This month experiences significant rainfall, with 164 mm (6.5 in) of precipitation over approximately 24 days, resulting in a high humidity level of 87%.
In contrast, March brings slightly warmer temperatures, with an average of 29°C (84°F) and a maximum reaching 35°C (95°F), but with much less rainfall. The total precipitation for March is only 38 mm (1.5 in) spread over about 6 days, and the humidity drops to 68%. For more detailed information on the weather during this month, you can visit Surat Thani weather in March.
In comparing the weather conditions of September and April, we see some notable differences. September has a minimum temperature of 24°C (76°F) and an average of 28°C (82°F), while April records slightly warmer temperatures with a minimum of 25°C (77°F) and an average of 29°C (84°F). Furthermore, April can get quite hot, reaching a maximum of 36°C (97°F), compared to September's maximum of 34°C (94°F).
Precipitation levels are also higher in September, with 164 mm (6.5 in) over 24 rainy days, compared to April's 178 mm (7.0 in) of rain on 19 rainy days. Additionally, September's humidity sits at a high 87%, whereas April's humidity level is comparatively lower at 69%. For more detailed information on April weather, visit Surat Thani weather in April.
When comparing the weather in September and May, both months are characterized by warm temperatures and substantial rainfall. September sees a minimum temperature of around 24°C (76°F) and an average high of 34°C (94°F), with a notable precipitation of 164 mm (6.5 in) spread over 24 days and high humidity at 87%. In contrast, May has slightly warmer temperatures, with a minimum of 25°C (77°F) and maximum reaching 36°C (96°F). The total precipitation is lower at 151 mm (5.9 in), also spread across 25 days, but with a reduced humidity level of 77%. For more details, visit Surat Thani weather in May.
When comparing the weather in September and June, both months exhibit similar temperature ranges, with minimums around 24°C (76°F), average highs of 28°C (82°F), and maximums reaching 34°C (94°F). However, September tends to be wetter, with precipitation measuring 164 mm (6.5 in) over 24 days, compared to June's 117 mm (4.6 in) over 19 days. The humidity is slightly higher in September at 87%, while June maintains a close 86%. For a more detailed look at June's weather patterns, you can visit Surat Thani weather in June.
In comparing the weather between September and July, both months exhibit warm temperatures, with September having a minimum of 24°C (76°F) and an average of 28°C (82°F), while July starts slightly higher with a minimum of 25°C (76°F) and an average of 28°C (83°F). However, July reaches a maximum temperature of 36°C (97°F), which is notably hotter than September's maximum of 34°C (94°F). Precipitation also varies significantly; September is wetter, receiving 164 mm (6.5 in) over 24 days, compared to July's 95 mm (3.7 in) over 18 days. Humidity levels are similar, with September at 87% and July slightly lower at 86%. For more detailed insights, you can check Surat Thani weather in July.
In comparing the weather of September to August, both months exhibit similar minimum temperatures, averaging around 24°C (76°F). However, September experiences slightly lower average temperatures, with a mean of 28°C (82°F), compared to August's 28°C (83°F). The maximum temperature in August reaches 35°C (95°F), while September peaks at 34°C (94°F). Regarding precipitation, September is significantly wetter, accumulating 164 mm (6.5 in) over 24 days, whereas August sees only 99 mm (3.9 in) across 21 days. Humidity levels remain high in both months, with September at 87% and August at 88%. For more details, you can check Surat Thani weather in August.
In September, the weather features slightly warmer temperatures with a minimum of 24°C (76°F), an average of 28°C (82°F), and a maximum of 34°C (94°F). The month also experiences significant rainfall, accumulating 164 mm (6.5 in) over 24 days, along with high humidity levels at 87%.
Conversely, October sees a slight decrease in average temperature, dropping to 27°C (81°F), but maintains the minimum of 24°C (76°F) and a maximum of 33°C (91°F). Rainfall increases to 239 mm (9.4 in) spread over 28 days, and humidity remains similar at 86%. For a deeper look at the October weather specifics, you can check out Surat Thani weather in October.
In September, the weather is typically warm, with minimum temperatures around 24°C (76°F) and average highs reaching up to 34°C (94°F). The month experiences considerable rainfall, with 164 mm (6.5 in) of precipitation spread over 24 days, while humidity remains high at 87%.
In contrast, November experiences slightly cooler temperatures, with an average low of 24°C (75°F) and a maximum of 32°C (89°F). However, it sees significantly more rainfall, totaling 317 mm (12.5 in) over 26 days, maintaining the same high humidity levels of 87%. For more detailed weather information, you can check Surat Thani weather in November.
In comparing the weather between September and December, we notice a slight decrease in temperatures. September has a minimum temperature of 24°C (76°F) and averages around 28°C (82°F), while December has similar minimum temperatures at 23°C (75°F) and an average of 27°C (80°F). The maximum temperatures also drop slightly, from 34°C (94°F) in September to 32°C (89°F) in December.
Precipitation levels are higher in December, with 197 mm (7.8 in) over 20 days compared to September's 164 mm (6.5 in) over 24 days. Humidity remains relatively high in both months, at 87% in September and slightly lower at 83% in December. For more detailed insights, you can check the overall climate trends at Surat Thani weather in December.
September in Surat Thani showcases a distinct shift in weather patterns compared to other months, characterized by higher humidity and significant rainfall. With the average temperature lingering around a warm 28°C, the month feels particularly sweltering due to the prevalent 87% humidity. Rainfall is frequent, with over three-quarters of the month experiencing precipitation, leading to lush green landscapes but also a more challenging travel experience. If you’re planning a visit, be prepared for the rain, but also for the vibrant beauty that the wet season brings. For more insights into this tropical destination's climate, check out Surat Thani Climate.