September Weather in Mae Sot, Thailand

Last updated: August 27, 2025

September in Mae Sot, Thailand showcases a warm tropical climate, with maximum temperatures reaching a balmy 34°C (93°F) and an average hovering around 26°C (79°F). The nights provide a comforting respite with minimum temperatures around 21°C (71°F). This month is characterized by considerable precipitation, totaling 248 mm (9.8 in) across 25 days, contributing to the region's lush greenery. With humidity levels at a notable 84%, visitors should be prepared for a sticky yet vibrant atmosphere, typical of the monsoon season.

September Temperature in Mae Sot

In September, Mae Sot, Thailand experiences a transition in temperatures that foreshadow the cooler months ahead. With minimums averaging around 21°C (71°F) and maximums peaking at 34°C (93°F), the weather remains warm but noticeably milder than the scorching heat of previous months. This month sees an average temperature of 26°C (79°F), indicating a slight cooling trend as the rainy season progresses. The consistent warmth coupled with lower highs compared to April and May suggests a graceful shift toward the refreshing autumn, and it’s an excellent time for visitors to enjoy outdoor activities without the sweltering heat of summer.

September Weather in Mae Sot: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mae Sot, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mae Sot, 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).
JanFebMarAprMayJunJulAugSepOctNovDec747681838279777879797874
Data source: Temperature data for Mae Sot 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 Mae Sot

In September, Mae Sot experiences a significant dip in precipitation compared to the preceding months, yet it remains one of the wetter periods of the year. With an average of 248 mm (9.8 in) of rainfall over approximately 25 days, the month continues the trend of the rainy season that starts in May, peaking in July and August. This gradual decrease in rainfall from the highs of the previous months reflects the typical transition into drier conditions, yet September's substantial precipitation ensures the lush landscape remains vibrant. Following the heavy downpours of summer, the rain in September helps replenish local water sources, preparing the region for the drier months ahead. As the year progresses, one can observe the shift from the intense monsoon rains to a more moderate but still significant precipitation pattern, ultimately leading into a much drier October.

September Precipitation Trends in Mae Sot

The chart displays monthly precipitation patterns in Mae Sot, 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 Mae Sot, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec913441363053964462481371113
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mae Sot

In September, Mae Sot, Thailand experiences a notable humidity level of 84%, continuing the trend established in the preceding months of June and July. This period of heightened humidity follows a gradual rise that begins in late spring, with May seeing a significant jump to 71%. As the rainy season peaks in August with an intense 87% humidity, September maintains this tropical ambiance, embodying the region's lush and vibrant character. The humidity then begins to taper off as the year progresses, dropping to 71% in October, signaling a shift towards cooler, drier conditions. This pattern illustrates Mae Sot's climate transition, showcasing the balance between wet and dry seasons that define its weather year-round.

September Average Humidity in Mae Sot

This chart illustrates the average monthly humidity levels in Mae Sot, 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 Mae Sot is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%48%45%49%71%84%84%87%84%71%62%55%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mae Sot

In September, Mae Sot continues to experience a high level of UV radiation with an index of 14, placing it firmly in the extreme exposure category. This marks a slight decrease from August's peak of 15, yet it remains indicative of the region's relentless sun. Visitors should be aware that the burn time is just 10 minutes, emphasizing the urgency for sun protection as the trend of consistently high UV levels persists from the summer months. As the year progresses into October, a marginal decrease to an index of 13 suggests a gradual easing, but the extreme caution is still warranted for September. For more information on UV trends in this region, check out Mae Sot UV Index.

Maximum UV Index Levels in Mae Sot for September

The chart shows the monthly maximum UV Index (UVI) for Mae Sot 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 Mae Sot typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121413141414151413109
Data source: Mae Sot 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 Mae Sot

As the calendar turns to September, Mae Sot, Thailand begins to welcome a noticeable resurgence of sunshine, with 241 hours of glorious daylight illuminating the landscape. This month marks a refreshing shift from the summer slump, which witnessed the lowest sunshine hours of the year in June and July, with just 217 and 195 hours, respectively. Following the typically overcast months of August, where sunlight dipped to 161 hours, September’s light provides a much-needed boost, laying the groundwork for an October increase to 284 hours. This pattern not only highlights the gradual transition toward drier and more vibrant days but also sets the stage for a splendid autumn, where sunlight becomes increasingly abundant once again.

Monthly Sunshine Duration in Mae Sot: September Highlighted

The September sunshine duration represents the total number of hours Mae Sot 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.
JanFebMarAprMayJunJulAugSepOctNovDec255h302h337h325h314h217h195h161h241h284h307h316h
Data source: Mae Sot September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mae Sot During September

September in Mae Sot, Thailand, sees a notable dip in sunny weather, with only a 7% chance of sunshine. This starkly contrasts with the previous months, especially from January to April, where the likelihood of sun remains robust; January, for instance, boasts an impressive 80% chance. As the rainy season progresses into June, July, and August, the sun becomes a rare sight, culminating in September's dismal forecast. With only a 23% chance of clearer skies in October and a gradual increase heading into the drier months of November and December, travelers may want to consider alternative plans for September to avoid its cloudy veil.

Percentage of Sunny Days in September in Mae Sot

The chart illustrates the percentage of sunny days in Mae Sot 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 Mae Sot experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%72%22%39%7%7%6%7%23%57%86%
Data source: Mae Sot September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mae Sot in September

In September, Mae Sot basks in a delightful 12 hours of daylight, maintaining a consistent brightness akin to the preceding months of March through August. This transition into the heart of the monsoon season continues the trend of increasing sunlight following the shorter days of winter. As the year progresses, the daylight duration peaks during the summer months of June and begins to recede as autumn approaches, tapering back to 11 hours by October. The consistent daylight hours during September reflect the area's unique tropical climate, offering a vibrant backdrop for both daily life and lush natural landscapes. As daylight dwindles into the autumn months, the fleeting summer sun continues to linger just before the shift towards shorter days.

Average Daylight Hours in Mae Sot for September

The chart illustrates the variation in daylight duration in Mae Sot throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 14m11h 35m12h 2m12h 30m12h 54m13h 5m12h 59m12h 39m12h 12m11h 44m11h 20m11h 8m
Data source: Mae Sot daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Mae Sot

As September arrives in Mae Sot, Thailand, the gentle caress of the wind becomes notably lighter, with an average speed of just 1.2 m/s (approximately 3 mph). This trend marks a continuation of the serene conditions that have characterized the latter part of the year, following a slight uptick in wind strength during the earlier months. While the summer months of June and July experience a refreshing breeze at about 2.0 m/s, September’s whispering winds signal a transition, hinting at the upcoming dry season. As the winds calm, the atmosphere becomes perfect for leisurely strolls, allowing residents and visitors alike to immerse themselves in the tranquil beauty of Mae Sot’s landscape.

Average September Wind Speed in Mae Sot

The chart displays monthly wind speed patterns in Mae Sot, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.81.61.61.31.52.01.81.61.2 m/s1.21.82.1
Data source: Mae Sot September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Mae Sot Compares to Other Months

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

September and January exhibit contrasting weather patterns. In September, temperatures range from a warm minimum of 21°C (71°F) to a peak of 34°C (93°F), with an average of 26°C (79°F). This month is also marked by significant rainfall, with a total of 248 mm (9.8 in) of precipitation spread over 25 days and high humidity levels at 84%. In stark contrast, January enjoys a cooler climate, with temperatures dropping to a minimum of 10°C (51°F) and averaging 23°C (75°F), while maintaining a similar maximum of 34°C (94°F). Precipitation during this month is markedly low, with only 9 mm (0.3 in) falling on just 1 day and a humidity level of 51%. For further details on January weather, you can check Mae Sot 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 34°C (93°F), with an average of 26°C (79°F). This month also experiences significant rainfall, totaling 248 mm (9.8 in) over 25 days, resulting in high humidity at 84%. In contrast, February boasts a much cooler minimum temperature of 12°C (54°F), though it can climb to a sweltering maximum of 37°C (98°F) and maintains a pleasant average of 24°C (76°F). With only 1 mm of precipitation throughout the month and no rainy days, February's humidity drops to a comfortable 48%. For a more detailed look at February’s weather, you can visit Mae Sot weather in February.

In comparing the weather of September and March, it's clear that both months offer distinct climates. September is characterized by warm temperatures, with a minimum of 21°C (71°F) and an average of 26°C (79°F), peaking at a maximum of 34°C (93°F). However, it is also the wettest month, experiencing 248 mm (9.8 in) of rainfall over 25 days, contributing to high humidity levels of 84%.

In contrast, March boasts slightly cooler mornings with a minimum temperature of 15°C (59°F) but can reach a scorching maximum of 39°C (103°F) during the day, resulting in an average temperature of 27°C (81°F). Notably, March experiences negligible precipitation, with only 3 mm (0.1 in) falling across 0 days, leading to a much drier atmosphere and lower humidity at 45%. For more details on weather patterns specific to March, you can check out Mae Sot weather in March.

September and April offer contrasting weather experiences. September tends to be warmer with average temperatures ranging from 21°C (71°F) to a maximum of 34°C (93°F), accompanied by high humidity levels at 84% and significant rainfall, totaling 248 mm (9.8 in) across 25 days. In contrast, April is characterized by hotter conditions, featuring an impressive high of 40°C (104°F) and an average temperature of 28°C (83°F), but with much less precipitation at only 44 mm (1.7 in) over just 7 days and lower humidity at 49%. For those interested in exploring the specifics of April's weather, check out Mae Sot weather in April.

In comparing the weather of September and May, both months begin with warm low temperatures around 21°C (71°F), but May typically experiences higher average temperatures, peaking at 40°C (104°F), compared to September's maximum of 34°C (93°F). September is marked by its higher humidity at 84%, which can make the heat feel more oppressive, while May has a more comfortable humidity level of 71%. Rainfall is significantly greater in September, with 248 mm (9.8 in) falling over 25 days, compared to May's 136 mm (5.3 in) over 19 days. For more detailed information about the weather in May, you can check out Mae Sot weather in May.

When comparing the weather in September and June, both months experience similar average temperatures, hovering around 26°C (79°F). However, June tends to start off slightly warmer with a minimum temperature of 23°C (73°F) compared to September's 21°C (71°F). Notably, June sees more precipitation, with a total of 305 mm (12.0 in) over 28 days, while September receives 248 mm (9.8 in) across 25 days. Despite the slight increases in rainfall and humidity in June, both months share a consistent humidity level of 84%. For a closer look at conditions specific to June, you can check Mae Sot weather in June.

In comparing the weather patterns of September and July, both months experience similar humidity levels at 84%. However, September tends to have slightly higher temperatures, with an average of 26°C (79°F) compared to July’s average of 25°C (78°F). While September has a minimum temperature of 21°C (71°F), July starts off just a notch higher at 22°C (72°F). In terms of maximum temperatures, September rises to 34°C (93°F), while July peaks at 33°C (91°F). Notably, July experiences significantly more rainfall, totaling 396 mm (15.6 in) across 30 days, compared to September’s 248 mm (9.8 in) over 25 days. For more details, you can check out Mae Sot weather in July.

In comparing the weather between August and September, it is evident that September experiences slightly warmer average temperatures, with an average of 26°C (79°F) compared to August's 25°C (78°F). However, August has a marginally higher minimum temperature and a lower maximum temperature than September. Notably, September sees a significant reduction in precipitation, with 248 mm (9.8 in) over 25 days, as opposed to August's 446 mm (17.5 in) over 30 days, indicating a drier month. Humidity levels also drop slightly from 87% in August to 84% in September. For more details, you can check out Mae Sot weather in August.

September and October exhibit noticeable differences in weather patterns. While September boasts a minimum temperature of 21°C (71°F) and can reach highs of 34°C (93°F), it is characterized by high humidity at 84% and significant rainfall, accumulating 248 mm (9.8 in) over 25 days. In contrast, October sees a slight decrease in minimum temperature to 20°C (69°F), with the potential for a higher maximum of 37°C (98°F). Rainfall is also reduced to 137 mm (5.4 in) across 17 days, and the humidity drops to 71%. This shift marks October as a warmer yet drier month compared to the previous month. For more details, check out Mae Sot weather in October.

In September, the weather is characterized by warm temperatures with a minimum of 21°C (71°F) and a maximum that can reach up to 34°C (93°F). This month also sees significant rainfall, with 248 mm (9.8 in) of precipitation spread over 25 days, resulting in high humidity levels of 84%. In contrast, November offers a more stable climate, featuring cooler minimum temperatures at 16°C (62°F) and a slightly higher maximum of 36°C (96°F). Precipitation diminishes dramatically to just 11 mm (0.4 in) over only 2 days, leading to a lower humidity level of 62%. For more detailed insights, check Mae Sot weather in November.

September and December showcase quite a contrast in weather patterns. In September, temperatures are warmer with a minimum of 21°C (71°F) and an average of 26°C (79°F), reaching peaks of 34°C (93°F). This month is also characterized by high humidity at 84% and significant rainfall, with 248 mm (9.8 in) of precipitation occurring over 25 days. In contrast, December features cooler conditions with a minimum temperature of 11°C (52°F) and an average of 23°C (74°F), while still hitting highs of 34°C (94°F). Precipitation drops dramatically to just 13 mm (0.5 in) over only 2 days, and humidity decreases to a more comfortable 55%. For those interested in specific insights about Mae Sot weather during this month, check out Mae Sot weather in December.

Compare Mae Sot's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Mae Sot

September in Mae Sot presents a distinct shift in weather, characterized by higher humidity and increased rainfall compared to other months. With frequent rains leading to almost a full month of wet days, the typical warm atmosphere is accompanied by a lush vibrancy. Temperatures remain fairly consistent, with maximums soaring to comfortable levels, creating a tropical experience that can feel quite different from the drier seasons. For those seeking to explore the lush landscapes enhanced by this rainy embrace, understanding the September climate is key. For more detailed insights, check out Mae Sot Climate.