September Weather in Patong, Thailand

Last updated: August 27, 2025

September in Patong, Thailand offers a warm tropical climate characterized by an average temperature of 27°C (82°F), peaking at a maximum of 29°C (85°F) and dipping to 25°C (78°F) at night. However, visitors should be prepared for considerable rainfall, as the month experiences an average precipitation of 283 mm (11.2 inches) spread over 25 days, resulting in a humidity level of 84%. This combination of heat and moisture creates a lush, vibrant environment, perfect for those looking to experience the beauty of Thailand despite the showers. Whether you’re planning beach activities or exploring local attractions, September’s tropical climate presents both challenges and charms in the heart of Patong.

September Temperature in Patong

In September, Patong, Thailand, experiences a welcoming tropical climate, with temperatures that remain quite consistent. The minimum temperature hovers around 25°C (78°F), while the average settles at a comfortable 27°C (82°F). Daytime highs usually reach a pleasant 29°C (85°F), making it a delightful time to enjoy the beach or explore local attractions. As the month marks the transition from the wet season, the temperatures maintain a warm yet refreshing balmy feel, reminiscent of the preceding summer months. With only a slight dip compared to August, September continues to offer splendid warmth, ensuring visitors can embrace the sun-drenched beauty of Patong nearly year-round.

September Weather in Patong: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Patong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Patong, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec818182828382828281818181
Data source: Temperature data for Patong generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Patong

In September, Patong, Thailand, experiences one of its wettest months, with a striking 283 mm (11.2 in) of precipitation, reflecting a significant peak in monsoon activity. This increased rainfall is not only robust in volume but also frequent, with 25 days of rain, offering a stark contrast to the drier months of the year. Following a series of gradual increases from June through August, September marks a high point that precedes an even wetter October. The combination of extended rainy days and substantial rainfall creates a lush, vibrant landscape, but it also suggests travelers should be prepared for wet conditions during their visit. Overall, September is emblematic of the monsoon's full swing in Patong, captivating both nature enthusiasts and adventure seekers alike.

September Precipitation Trends in Patong

The chart displays monthly precipitation patterns in Patong, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Patong, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1131642165259240207230283310218135
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Patong

September in Patong, Thailand, marks a notable peak in humidity, with levels rising to 84%. This increase reflects a consistent trend throughout the rainy season, as humidity steadily climbs from the relatively lower levels of 71% in April and 72% in May. Following a gradual ascent, the summer months of June and July see humidity levels at 79%, escalating to 82% in August. As the wet season continues, September’s humidity not only stands as the highest for the month, but it also aligns with November and December, both maintaining 84% humidity. This seasonal pattern highlights Patong's tropical climate, emphasizing the thick, balmy air that characterizes the region during this period.

September Average Humidity in Patong

This chart illustrates the average monthly humidity levels in Patong, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Patong is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%73%74%71%72%79%79%82%84%83%84%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Patong

In September, Patong, Thailand, maintains a remarkable UV Index of 14, indicating an extreme exposure category with a consistent burn time of just 10 minutes. This pattern, consistent with the previous months, highlights the region's persistent intensity of sunlight throughout the year, peaking especially during the dry season. The UV Index remains on par with August, suggesting that visitors should be vigilant about sun protection. As the seasons shift towards October, the UV levels remain steady, emphasizing the need for awareness and precautions while enjoying Patong's beautiful beaches. For detailed insights, check out the complete Patong UV Index.

Maximum UV Index Levels in Patong for September

The chart shows the monthly maximum UV Index (UVI) for Patong in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Patong typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415151413131414141211
Data source: Patong September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Patong

As the vibrant summer season continues, September in Patong, Thailand brings a warm embrace of sunshine, offering about 282 hours of brilliant daylight. This month marks a slight dip from the sun-drenched heights of March, which boasts an impressive 344 hours of sunshine, but still holds its own compared to the bustling summer months preceding it. August and July linger close behind with 309 and 316 hours respectively, creating a seamless transition into early autumn. Despite the softening rays, September remains an ideal time to soak up the sun, as it glides toward the dryer months of October and November, making every moment spent outdoors truly unforgettable.

Monthly Sunshine Duration in Patong: September Highlighted

The September sunshine duration represents the total number of hours Patong experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec257h311h344h317h308h296h316h309h282h281h283h309h
Data source: Patong September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Patong During September

In Patong, Thailand, the month of September is characterized by a notably low chance of sunny weather, with only a 10% likelihood of sun. This trend reflects a general pattern of decreasing sunshine hours as the rainy season approaches its peak in the Gulf region. Following August, which also sees a mere 10% chance, September offers little reprieve from the clouds, showcasing a considerable dip compared to the sunnier months like January and February, where the chances soar to 28% and 48% respectively. Thus, if you're planning a trip during this time, be prepared for the possibility of overcast skies and persistent rain rather than beach bliss.

Percentage of Sunny Days in September in Patong

The chart illustrates the percentage of sunny days in Patong throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Patong experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%48%41%21%16%20%18%10%10%10%4%40%
Data source: Patong September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Patong in September

In September, Patong, Thailand enjoys a generous 12 hours of daylight, continuing the trend established throughout the summer months. This consistency reflects the tropical climate, where extended daylight is common. From March through August, daylight remains steady at 12 hours, providing ample opportunity for sun-soaked adventures and vibrant nightlife. As the calendar shifts towards October, the daylight begins to recede back to 11 hours, hinting at the gradual transition to the cooler months. Overall, September stands out as a prime time to relish the sun's warm embrace and explore the stunning beauty of this coastal paradise.

Average Daylight Hours in Patong for September

The chart illustrates the variation in daylight duration in Patong throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 42m11h 51m12h 4m12h 17m12h 28m12h 33m12h 30m12h 21m12h 8m11h 55m11h 45m11h 39m
Data source: Patong daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Patong

As September arrives in Patong, Thailand, the gentle caress of the average wind speed measuring 4.4 m/s (10 mph) offers a pleasant reprieve from the summer heat. Following the breezy embrace of July and August, which saw winds averaging around 5.5 m/s and 5.1 m/s respectively, September’s winds slightly decline, yet still provide a soothing backdrop for beachgoers and adventurers alike. This transitional month serves as a bridge to the more moderate winds of October, where conditions stabilize at 4.7 m/s. Overall, the trend shows a gradual shift from the briskness of mid-year towards a softer, inviting atmosphere, making September a charming choice for visitors seeking a tranquil yet vibrant coastal experience.

Average September Wind Speed in Patong

The chart displays monthly wind speed patterns in Patong, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.75.33.83.93.94.75.55.14.4 m/s4.73.84.9
Data source: Patong September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Patong Compares to Other Months

Weather in Patong varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Patong, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), with an average temperature of 27°C (82°F). However, this month is characterized by high precipitation levels, totaling 283 mm (11.2 in) over approximately 25 days, along with high humidity at 84%. In contrast, January features similar temperatures, with a minimum of 24°C (76°F) and a maximum of 30°C (86°F), and an average of 27°C (81°F). January experiences significantly less rainfall at 113 mm (4.5 in) over just 10 days and lower humidity at 76%. For a more detailed view of January weather specifics, check Patong weather in January.

September and February present contrasting weather conditions, despite sharing similar average temperatures. In September, temperatures hover between a minimum of 25°C (78°F) and a maximum of 29°C (85°F), accompanied by high humidity levels at 84%. This month is marked by significant rainfall, totaling 283 mm (11.2 in) spread over 25 days, creating a wet and humid atmosphere.

In contrast, February offers warmer maximum temperatures reaching up to 31°C (87°F), with less humidity at 73% and only 16 mm (0.6 in) of precipitation over just 3 days. This results in a much drier and more comfortable climate. For more information on February weather specifics, check out Patong weather in February.

In comparing the weather between September and March, it's evident that both months experience warm temperatures, but with notable differences in other factors. September tends to be slightly cooler overall, with average temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (85°F) while experiencing significant rainfall of 283 mm (11.2 in) over 25 days, leading to higher humidity levels at 84%. In contrast, March sees a marginally warmer average temperature of around 28°C (83°F), with maximums reaching 30°C (87°F). Additionally, March is characterized by much lower precipitation at just 42 mm (1.7 in) spread over only 8 days, resulting in a more pleasant humidity level of 74%. For a detailed look at March weather in Patong, check out Patong weather in March.

September and April exhibit distinct weather patterns with some subtle similarities. In September, temperatures hover between a minimum of 25°C (78°F) and a maximum of 29°C (85°F), with an average temperature of 27°C (82°F). The month is characterized by heavy rainfall, totaling 283 mm (11.2 in) over 25 days, leading to high humidity levels at 84%. In contrast, April features slightly warmer temperatures, with a minimum of 25°C (78°F), an average of 28°C (83°F), and a maximum of 30°C (87°F). Precipitation is significantly lower in April at 165 mm (6.5 in) over 21 days, along with a reduction in humidity to 71%. For a detailed overview of April's conditions, you can check Patong weather in April.

September and May showcase a similar warmth, with average temperatures hovering around 27°C (82°F) in September and reaching slightly higher at 28°C (83°F) in May. However, September is marked by more frequent rainfall, experiencing 283 mm (11.2 in) of precipitation over 25 days, compared to May's 259 mm (10.2 in) over 27 days. The humidity levels also differ; September is significantly more humid at 84%, while May maintains a lower humidity of 72%. For a detailed look at May weather in Patong, you can visit Patong weather in May.

In comparing the weather of September and June, both months exhibit warm temperatures, but September tends to be slightly cooler with average temperatures ranging from 25°C (78°F) to 29°C (85°F) compared to June's range of 26°C (78°F) to 30°C (86°F). Additionally, September experiences higher precipitation, averaging 283 mm (11.2 in) over 25 days, while June sees about 240 mm (9.4 in) across 24 days. Humidity levels are also higher in September at 84%, compared to 79% in June. For a closer look at June's weather specifics, you can visit Patong weather in June.

In comparing the weather conditions of September and July, both months maintain similar high temperatures, with July experiencing slightly cooler minimum and average temperatures at 26°C (78°F) and 28°C (83°F), respectively, compared to September’s minimum of 25°C (78°F) and average of 27°C (82°F). However, September sees a significant increase in precipitation, with 283 mm (11.2 in) over 25 days, contrasted with July's 207 mm (8.1 in) over 20 days. The humidity is also higher in September, at 84%, compared to July's 79%, making September feel more humid and rainy overall. For further insights into July’s climate specifics, you can check out Patong weather in July.

In comparing the weather of September and August, both months exhibit warm temperatures, with September experiencing slightly cooler averages and a min temperature of 25°C (78°F) compared to August's 25°C (77°F). While the average temperature in August is marginally higher at 28°C (82°F) and can peak at 30°C (86°F), September sees a max of 29°C (85°F). However, September is notably wetter, recording 283 mm (11.2 in) of precipitation over 25 days, which exceeds August's 230 mm (9.0 in) across 22 days. Additionally, September has a slightly higher humidity level at 84% compared to August's 82%. For a more detailed look at weather specifics, you can visit Patong weather in August.

In September, temperatures typically range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), with an average of 27°C (82°F). The month sees significant rainfall, with 283 mm (11.2 in) of precipitation spread over 25 days and humidity levels at 84%. October offers similar temperatures, maintaining a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (85°F). However, it experiences slightly higher precipitation, totaling 309 mm (12.2 in) over 26 days, with humidity marginally lower at 83%. For more details on October weather, visit Patong weather in October.

In September, the weather is characterized by slightly cooler temperatures, with a minimum of 25°C (78°F) and an average of 27°C (82°F), peaking at 29°C (85°F). The month is notably wetter, experiencing 283 mm (11.2 in) of precipitation over 25 days, maintaining a high humidity level of 84%. Conversely, November sees a marginal increase in maximum temperatures, reaching 30°C (87°F), while maintaining a similar minimum and average as in September. Precipitation decreases to 218 mm (8.6 in) across 24 days, still with humidity at 84%. For a closer look at the weather specifics of November, check out Patong weather in November. Overall, November offers slightly warmer and drier conditions compared to September.

In September, the weather is characterized by warm temperatures, with a minimum of 25°C (78°F) and an average of 27°C (82°F), peaking at 29°C (85°F). However, it tends to be quite wet, with significant precipitation of 283 mm (11.2 in) over 25 days, resulting in high humidity levels at 84%. By contrast, December experiences slightly higher maximum temperatures, peaking at 31°C (87°F), yet the overall conditions are drier, with only 135 mm (5.3 in) of rainfall over 14 days, while maintaining the same humidity of 84%. This shift makes December a more favorable time for outdoor activities. For more details, you can check Patong weather in December.

Compare Patong's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Patong

September in Patong is marked by higher humidity and significant rainfall, making it stand out from the drier months of the year. With an average temperature that remains pleasant, the island feels warm and inviting despite the frequent showers. Over half the days in September witness precipitation, contributing to the lush, tropical landscape that characterizes this time of year. Travelers seeking a quieter experience will find that the rain often comes in short bursts, leaving plenty of opportunities to explore. To dive deeper into the seasonal shifts, check out the detailed overview on the Patong Climate.