September Weather in Kuala Lumpur, Malaysia

Last updated: August 21, 2025

In Kuala Lumpur, Malaysia, September brings a warm tropical climate characterized by maximum temperatures reaching up to 34°C (93°F) and a comfortable average of 26°C (78°F). However, the city experiences significant rainfall during this month, with an impressive total precipitation of 278 mm (10.9 in) spread across approximately 26 days, contributing to high humidity levels around 90%. Visitors should prepare for a mix of sun and rain, making it essential to embrace the vibrant, lush scenery that this seasonal rain helps nurture.

September Temperature in Kuala Lumpur

In September, Kuala Lumpur experiences warm tropical weather, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 34°C (93°F). This month continues the trend of consistent warmth seen throughout the year, with an average temperature holding steady at 26°C (78°F). Compared to previous months, September maintains similar warmth to August while slightly cooling from the peak temperatures often observed in March. As the city transitions into the later months, temperatures remain relatively stable, suggesting a predictable climate for visitors looking to enjoy the vibrant atmosphere of Malaysia's capital. Overall, September is characterized by its warm and humid conditions, making it an ideal time for exploring the city's many attractions.

September Weather in Kuala Lumpur: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kuala Lumpur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kuala Lumpur, 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).
JanFebMarAprMayJunJulAugSepOctNovDec787979798079797978797878
Data source: Temperature data for Kuala Lumpur 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 Kuala Lumpur

September in Kuala Lumpur brings a notable shift in the city's precipitation patterns, with 278 mm (10.9 inches) of rainfall over 26 days. As the wet season approaches its peak, September’s rainfall is a substantial increase from the drier months of July and August, which saw about 188 mm (7.4 in) and 187 mm (7.4 in) respectively. This month stands out for its heavy downpours, contributing to the lush greenery that defines the city. The frequency of rainy days hints at the consistent humidity and vibrant tropical climate. As October looms with its 294 mm (11.6 in) forecast, the trend suggests that Kuala Lumpur will continue to experience its characteristic heavy rainfall, nurturing its rich biodiversity and bustling urban landscape.

September Precipitation Trends in Kuala Lumpur

The chart displays monthly precipitation patterns in Kuala Lumpur, 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 Kuala Lumpur, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec158112265301329192188187278294366238
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kuala Lumpur

In September, Kuala Lumpur experiences a prominent peak in humidity, reaching 90%, mirroring the levels of the previous month. This consistent high is part of a rising trend observed from June onward, where humidity levels escalate from a comfortable 87% in July to an even more oppressive atmosphere by September. While the dry, cooler months at the beginning of the year see humidity hovering around 77% to 84%, the late rainy season ushers in a sweltering environment, a hallmark of tropical climates. As the city moves into October, humidity begins a slight decline, yet it remains notably high at 89%, signaling the continuation of the region's lush, humid allure.

September Average Humidity in Kuala Lumpur

This chart illustrates the average monthly humidity levels in Kuala Lumpur, 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 Kuala Lumpur is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%77%77%80%85%87%88%90%90%89%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kuala Lumpur

In September, Kuala Lumpur experiences a UV Index of 14, maintaining the extreme exposure category that's prevalent throughout the year. This signifies that residents and visitors alike should remain vigilant about sun safety, as the burn time is a mere 10 minutes—a trend consistent from January to August. While the UV Index sees a slight dip compared to the highest readings earlier in the year, it is essential to recognize that protection from the sun remains crucial. As the year progresses, October mirrors September's UV levels, reinforcing the ongoing need for sun protection strategies. For detailed information on UV exposure trends, check out Kuala Lumpur UV Index.

Maximum UV Index Levels in Kuala Lumpur for September

The chart shows the monthly maximum UV Index (UVI) for Kuala Lumpur 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 Kuala Lumpur typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131515141312121314141312
Data source: Kuala Lumpur 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 Kuala Lumpur

September in Kuala Lumpur, Malaysia, continues to bask in a generous glow of sunshine, recording 291 hours of bright, sunny days. This month is a slight dip from the bustling warmth of August, which brought 305 hours of sunshine, but it still holds its own during the year. As we analyze the year's trend, it’s evident that the early months, particularly March with 325 hours, flaunt the peak sunlit moments, whereas the latter part of the year tends to mellow, with November seeing a significant drop to 260 hours. Overall, September's weather remains inviting, making it an ideal time for outdoor adventures amidst the vibrant cityscape, even as the sun starts to set a bit earlier.

Monthly Sunshine Duration in Kuala Lumpur: September Highlighted

The September sunshine duration represents the total number of hours Kuala Lumpur 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.
JanFebMarAprMayJunJulAugSepOctNovDec238h301h325h296h297h292h311h305h291h283h260h286h
Data source: Kuala Lumpur September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kuala Lumpur During September

In Kuala Lumpur, the likelihood of sunny weather in September stands at 14%, mirroring the somewhat inconsistent sun chances throughout the year. After a slight dip in August, where the sun appears just 11% of the time, September maintains a steady outlook, making it one of the more favorable months for sunshine, particularly when compared to the drizzly finale of the year, where November and December drop to just 5% and 10% respectively. Overall, while the probability of bright days in September isn't particularly high, it aligns closely with the moderate sunny spells seen in the preceding months, creating a transitional yet hopeful outlook as the year moves into its wettest quarter.

Percentage of Sunny Days in September in Kuala Lumpur

The chart illustrates the percentage of sunny days in Kuala Lumpur 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 Kuala Lumpur experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec6%23%20%14%13%13%13%11%14%12%6%10%
Data source: Kuala Lumpur September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kuala Lumpur in September

In Kuala Lumpur, September marks a continuation of the city's consistent daylight pattern, basking in approximately 12 hours of daylight. This stable duration reflects the tropical climate, with hours remaining steady from March through October. As the year progresses, daylight begins to taper in November and December, offering just 11 hours. The seamless transition between seasons allows residents and visitors alike to enjoy the vibrant urban landscape under the golden sun, making the city a delightful destination year-round.

Average Daylight Hours in Kuala Lumpur for September

The chart illustrates the variation in daylight duration in Kuala Lumpur throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 56m12h12h 5m12h 10m12h 14m12h 17m12h 16m12h 11m12h 6m12h 1m11h 57m11h 56m
Data source: Kuala Lumpur daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kuala Lumpur

As September approaches in Kuala Lumpur, the wind begins to pick up slightly, with average speeds reaching 1.4 m/s (3 mph). This marks a subtle uptick from the preceding summer months, where winds hovered around 1.3 m/s. Interestingly, September maintains a steady pace in line with the year's seasonal patterns, bridged by a gentle increase that sets the stage for October's slightly breezier days ahead. This mild wind adds a refreshing touch to the tropical heat, making early autumn in the city feel vibrant yet comfortable. It's a brief yet notable whisper of change in the air, reminding residents that even in a seemingly constant environment, nature’s rhythms are ever-present.

Average September Wind Speed in Kuala Lumpur

The chart displays monthly wind speed patterns in Kuala Lumpur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.71.31.21.21.31.41.31.4 m/s1.61.31.4
Data source: Kuala Lumpur September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kuala Lumpur Compares to Other Months

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

September and January in Kuala Lumpur exhibit similar temperature ranges, with minimums around 20°C (69°F) and maximums peaking at 34°C (93°F). However, September stands out with significantly higher precipitation, totaling 278 mm (10.9 in) over 26 days, compared to January's 158 mm (6.2 in) across 19 days. Additionally, humidity levels are more pronounced in September at 90%, while January sees a lower humidity of 84%. For more details, you can check Kuala Lumpur weather in January.

In September, the weather is characterized by warm temperatures with minimums around 20°C (69°F) and average highs reaching 34°C (93°F). This month experiences a significant amount of rainfall, with 278 mm (10.9 in) spread over 26 days and a high humidity level of 90%. In contrast, February sees slightly higher maximum temperatures, reaching up to 35°C (96°F), but with much less precipitation at 112 mm (4.4 in) over just 17 days. The humidity also drops to 77%, making February feel relatively drier and more comfortable. For more details on February weather patterns, you can check Kuala Lumpur weather in February.

In comparing the weather of September and March, both months feature warm average temperatures around 26°C (79°F). However, September tends to be more humid with an average of 90% humidity compared to March's 77%. In terms of temperature extremes, March can reach higher maximums, peaking at 36°C (97°F), whereas September maxes out at 34°C (93°F). Precipitation levels are relatively similar, with September receiving 278 mm (10.9 in) over 26 days, while March has slightly less at 265 mm (10.4 in) spread across 27 days. For more detailed information, visit Kuala Lumpur weather in March.

September and April in Kuala Lumpur exhibit similar average temperatures, with September having a minimum of 20°C (69°F) and a maximum of 34°C (93°F), while April's temperatures range slightly higher, with a minimum of 22°C (71°F) and a maximum of 33°C (92°F). Both months experience significant rainfall, but April sees slightly more precipitation at 301 mm (11.9 in) over 29 days compared to September's 278 mm (10.9 in) over 26 days. Additionally, humidity levels are high in both months, with September at 90% and April at 80%, making both periods notably humid. For more detailed information, you can check out Kuala Lumpur weather in April.

September and May in Kuala Lumpur exhibit similar temperature ranges, with both months experiencing a minimum of 20°C (69°F) and an average of around 26°C (78°F in September and 80°F in May). However, September tends to be slightly warmer, peaking at 34°C (93°F) compared to May's maximum of 33°C (92°F). In terms of precipitation, May is wetter, with an average of 329 mm (12.9 in) over 29 rainy days, while September receives 278 mm (10.9 in) across 26 days. The humidity is also higher in September at 90%, compared to 85% in May. For more details on May weather in Kuala Lumpur, check out Kuala Lumpur weather in May.

September and June in Kuala Lumpur showcase mild variations in weather patterns. Both months have an average temperature of around 26°C (79°F), with June slightly warmer at a minimum of 21°C (71°F) compared to September's 20°C (69°F). However, September is generally wetter, receiving 278 mm (10.9 in) of precipitation over 26 days, while June sees less rainfall at 192 mm (7.6 in) across 23 days. Humidity levels are relatively high in both months, with September standing at 90% and June at 87%, making the air feel quite muggy. For a detailed look at weather conditions, you can view Kuala Lumpur weather in June.

In comparing the weather between July and September, we see that September offers slightly warmer nights with a minimum temperature of 20°C (69°F) compared to July's minimum of 21°C (71°F). Both months have similar average temperatures of around 26°C (78°F), but September can peak higher at 34°C (93°F) versus July's maximum of 32°C (90°F). Additionally, September experiences significantly more rainfall, totaling 278 mm (10.9 in) over 26 days, while July receives 188 mm (7.4 in) over 25 days. Humidity levels are also a bit elevated in September at 90%, compared to 87% in July. For more details on July weather, you can visit Kuala Lumpur weather in July.

In comparing the weather between September and August, both months exhibit warm temperatures, with September seeing a slight increase in minimum and maximum temperatures, ranging from 20°C (69°F) to 34°C (93°F) compared to August's range of 21°C (70°F) to 33°C (91°F). However, September is notably wetter, receiving 278 mm (10.9 in) of precipitation over 26 days, while August has a lower total of 187 mm (7.4 in) over 25 days. Humidity levels remain consistent for both months at 90%, maintaining the tropical characteristics of the region. For more details, you can refer to Kuala Lumpur weather in August.

September and October weather in Kuala Lumpur exhibit some similarities and slight variations. Both months share an average temperature of 26°C (79°F) with maximums reaching up to 34°C (93°F). However, September records a minimum temperature of 20°C (69°F), slightly lower than October’s 21°C (71°F). In terms of precipitation, October sees an increase to 294 mm (11.6 in) compared to September's 278 mm (10.9 in), while the number of rainy days remains relatively consistent at 25 in October versus 26 in September. Notably, humidity levels are slightly lower in October at 89% compared to September's 90%. For a detailed look at October weather, you can check out this link: Kuala Lumpur weather in October.

In September, the weather in Kuala Lumpur features a minimum temperature of 20°C (69°F), with highs averaging around 26°C (78°F) and reaching up to 34°C (93°F). This month experiences significant rainfall, totaling 278 mm (10.9 in) over 26 days, with humidity levels remaining high at 90%.

In contrast, November sees slightly warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 32°C (91°F). However, the month records higher precipitation at 366 mm (14.4 in) over 29 days, with humidity levels remaining comparable at 89%. Overall, while both months are characterized by warm temperatures and high humidity, November is marked by increased rainfall. For more details, check out Kuala Lumpur weather in November.

In comparing the weather of September and December, both months in Kuala Lumpur showcase a warm climate with average temperatures around 26°C (78°F). However, September experiences slightly higher maximum temperatures, reaching up to 34°C (93°F), compared to December's 32°C (90°F). September also sees more rainfall, with 278 mm (10.9 in) spread over 26 days, while December's precipitation is lower at 238 mm (9.4 in) across 25 days. Interestingly, both months maintain a high humidity level of 90%. For more details on December weather, you can visit Kuala Lumpur weather in December.

Compare Kuala Lumpur's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kuala Lumpur

As the vibrant city of Kuala Lumpur transitions into September, expect a blend of high humidity and frequent rainfall, differentiating this month from the drier times of the year. The temperatures remain warm, typically hovering around comfortable averages, yet the increased moisture in the air can make it feel significantly hotter. With a notable increase in precipitation days, outdoor plans might require some flexibility due to the frequent showers. This combination of heat and humidity creates a lush, tropical backdrop that's distinct to September. For a deeper understanding of how the weather impacts your visit, explore more about the city's climate at Kuala Lumpur Climate.