September Weather in Narayanganj, Bangladesh

Last updated: August 21, 2025

In September, the weather in Narayanganj, Bangladesh presents a warm and humid ambiance, with maximum temperatures reaching up to 36°C (97°F) and an average temperature of 29°C (85°F). The month is marked by a significant minimum temperature of 26°C (78°F), creating a tropical feel throughout. Accompanied by substantial precipitation totaling 227 mm (8.9 in) over 24 days, the region experiences high humidity levels at 82%, contributing to the lush greenery typical of this time. As the rains nourish the land, the vibrant atmosphere of September captures the essence of the monsoon season in Narayanganj.

September Temperature in Narayanganj

In September, Narayanganj, Bangladesh experiences a tropical warmth that lingers with a minimum temperature of 26°C (78°F) and an average of 29°C (85°F), tapering off slightly from the peak summer months. The maximum temperature hovers around 36°C (97°F), similar to August, maintaining the heat that characterizes this period of the year. September showcases a consistent warmth that aligns closely with the preceding months, reflecting the transition towards the cooler temperatures of October. This blend of warm evenings and sultry days invites both locals and visitors to savor the lively outdoor atmosphere before the retreat of summer's embrace.

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

The chart illustrates September temperature patterns in Narayanganj, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Narayanganj, 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).
JanFebMarAprMayJunJulAugSepOctNovDec657079838484848585837668
Data source: Temperature data for Narayanganj generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Narayanganj

In September, Narayanganj experiences a substantial precipitation total of 227 mm (8.9 in), marking it as the fifth wettest month of the year. While the rainfall slightly decreases from the previous month, the region remains captivated by the monsoon's grip, seeing an impressive 24 days of rain. This trend highlights September as a month of transition; it retains the wet conditions characteristic of the monsoon season while gradually shifting towards drier months ahead. Historically, this period shows a trend of high rainfall, contributing significantly to the annual total and fostering rich, lush landscapes in and around the city. The persistence of rain during this time underscores the importance of September in the climatic rhythm of Narayanganj.

September Precipitation Trends in Narayanganj

The chart displays monthly precipitation patterns in Narayanganj, 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 Narayanganj, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec38401892323833412602271743656
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Narayanganj

As September arrives in Narayanganj, Bangladesh, the air becomes palpably humid, reaching an average of 82%—the highest level of the year. This month showcases a notable trend, where humidity levels consistently rise from the comparatively drier months of January through March, with figures dipping to a low of 41% in March. Following this, a significant increase begins in the warmer months, culminating in June and July with peaks of 72% and 81%, respectively. The transition into September marks a notable surge, reflecting the impact of the monsoon season, as the atmosphere feels increasingly moist and saturated. The humidity remains elevated into October, but the gradual decline signals a shift towards more comfortable conditions in the following months. Overall, September stands out as a peak in the annual humidity cycle, emphasizing the region's tropical climate and the influence of seasonal changes on the weather.

September Average Humidity in Narayanganj

This chart illustrates the average monthly humidity levels in Narayanganj, 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 Narayanganj is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec57%50%41%45%69%72%81%78%83%78%68%64%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Narayanganj

As September rolls in Narayanganj, Bangladesh, residents experience a UV Index of 12, categorized as extreme exposure. This trend continues from the peak summer months of June through August, where the UV Index soared up to 13, demanding vigilance from sun-seekers. While the burn time remains critically low at just 10 minutes, it's clear that the sun's intensity hasn’t waned significantly as the monsoon season progresses. Interestingly, this month marks a slight decrease from the mid-summer highs, yet caution should still be exercised to prevent skin damage. For detailed UV index insights and safety tips, visit Narayanganj UV Index.

Maximum UV Index Levels in Narayanganj for September

The chart shows the monthly maximum UV Index (UVI) for Narayanganj 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 Narayanganj typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579912131313121176
Data source: Narayanganj 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 Narayanganj

September in Narayanganj, Bangladesh, showcases a delightful transition from the vibrant summer months to the refreshing autumn season, with 279 hours of sunshine illuminating the days. This period sees a slight dip from the summer peak in August, which boasted 287 hours of sunlight, yet remains well above the winter months. Overall, the sunshine hours during September are indicative of a steady consistency in daylight throughout the year, with the preceding months of March to May witnessing the highest averages. As autumn unfolds, the warm golden rays persist, gently hinting at the cooler days ahead while providing an ideal backdrop for outdoor activities and exploration.

Monthly Sunshine Duration in Narayanganj: September Highlighted

The September sunshine duration represents the total number of hours Narayanganj 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.
JanFebMarAprMayJunJulAugSepOctNovDec238h282h325h315h317h264h265h287h279h291h285h278h
Data source: Narayanganj September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Narayanganj During September

As summer transitions to autumn, September in Narayanganj, Bangladesh, sees a noteworthy dip in sunshine with only a 14% chance of sunny weather. This marks a significant decline following the sweltering summer months, where the chances of sun dwindled sharply from 53% in May to an alarming 4% in July and 6% in August. While September offers a hint of improvement compared to the preceding months, it's still relatively low, marking it as one of the less sunny periods of the year. The pattern suggests that as the region gears up for the more temperate months ahead, residents should prepare for more cloud cover and potential rain through this transitional period.

Percentage of Sunny Days in September in Narayanganj

The chart illustrates the percentage of sunny days in Narayanganj 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 Narayanganj experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%77%72%53%12%4%6%14%52%74%64%
Data source: Narayanganj September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Narayanganj in September

In Narayanganj, Bangladesh, the daylight duration follows a rhythmic pattern throughout the year, peaking in the summer months. Starting from 10 hours in January, daylight gradually increases to a high of 13 hours from May to July, embodying the vibrant essence of the warmer seasons. As the summer fades, daylight begins to recede, with September maintaining a balanced 12 hours of sunlight, reminiscent of the previous months of spring and summer. This transition marks the shift towards shorter days, leading into October and November, where daylight again reduces to 11 hours and then 10 hours, creating a gentle cycle that echoes the passage of time in this picturesque locale. Through these changes, Narayanganj experiences a harmonious blend of light and shadow, each season casting its unique charm.

Average Daylight Hours in Narayanganj for September

The chart illustrates the variation in daylight duration in Narayanganj throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 50m11h 21m12h12h 41m13h 16m13h 33m13h 24m12h 54m12h 15m11h 34m10h 59m10h 41m
Data source: Narayanganj daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Narayanganj

As the months transition in Narayanganj, September brings a gentle lull in the gusts, with an average wind speed of 2.3 m/s (5 mph), slightly lower than the preceding summer months. This slight decrease follows the peak winds of June and July, which recorded 3.7 m/s (8 mph) and 3.4 m/s (8 mph), respectively. The winds gradually taper off from the invigorating summer breezes, hinting at the approaching calm of autumn. Interestingly, this month presents a blend of lingering warmth paired with mild windy days, expertly setting the stage for October's even lighter breezes, measured at 1.9 m/s (4 mph). Overall, September serves as a transitional period, balancing the end of the monsoonal winds with the tranquil stillness that defines the upcoming months.

Average September Wind Speed in Narayanganj

The chart displays monthly wind speed patterns in Narayanganj, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.02.22.22.42.63.73.43.02.3 m/s1.91.92.0
Data source: Narayanganj September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Narayanganj Compares to Other Months

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

September and January present striking contrasts in weather patterns. September boasts warm temperatures, ranging from a minimum of 26°C (78°F) to a scorching maximum of 36°C (97°F), accompanied by high humidity levels at 82%. This month is also characterized by substantial rainfall, with an average of 227 mm (8.9 in) over 24 rainy days. In contrast, January offers a much cooler climate, with temperatures dipping to a minimum of 10°C (50°F) and peaking at 29°C (85°F). The winter month enjoys significantly lower humidity at 57% and almost negligible precipitation, receiving just 3 mm (0.1 in) across 0 rainy days. For more details about the unique weather in January, you can explore Narayanganj weather in January.

September and February present contrasting weather conditions. In September, temperatures are significantly warmer, with lows around 26°C (78°F) and highs reaching up to 36°C (97°F), creating a hot and humid atmosphere with an average humidity of 82%. Additionally, September is characterized by heavy rainfall, with approximately 227 mm (8.9 in) of precipitation spread over 24 days. In stark contrast, February offers much cooler temperatures, with lows of 10°C (50°F) and an average high of 34°C (93°F). The month is notably drier, receiving only 8 mm (0.3 in) of rain over just 2 days, and features a comfortable humidity level of 50%. For more details on February weather, you can check Narayanganj weather in February.

September and March present strikingly different weather patterns. In September, temperatures range from a minimum of 26°C (78°F) to a maximum of 36°C (97°F), with an average temperature of 29°C (85°F). However, the month is characterized by high humidity at 82% and significant rainfall, totaling 227 mm (8.9 in) over 24 days. In contrast, March enjoys milder temperatures, with a minimum of 15°C (59°F) and an average of 26°C (79°F), reaching up to 36°C (97°F) at its peak. Rainfall is sparse in March, amounting to only 40 mm (1.6 in) across just 6 days, contributing to a much drier atmosphere and lower humidity levels at 41%. For a more detailed look at March conditions, visit Narayanganj weather in March.

In September, the weather tends to be warmer and more humid compared to April. September experiences average temperatures around 29°C (85°F), with highs reaching up to 36°C (97°F), while April's average temperature is slightly cooler at 28°C (83°F), peaking at 38°C (100°F). Moreover, September sees significantly more rain, with 227 mm (8.9 in) of precipitation over 24 days, compared to April's 189 mm (7.4 in) over just 14 days. This results in a much higher humidity level in September at 82%, contrasted with the more comfortable 45% humidity in April. For a detailed look at April weather, you can refer to Narayanganj weather in April.

In comparing the weather of September and May, both months showcase high temperatures, with maximums reaching up to 36°C (97°F). September, however, tends to be slightly warmer with an average of 29°C (85°F), while May maintains a similar average at 29°C (84°F) but starts at a cooler minimum of 21°C (69°F). Interestingly, September records higher humidity levels at 82%, compared to May's more comfortable 69%. Precipitation is fairly similar, with September experiencing 227 mm over 24 days and May slightly wetter at 232 mm over 20 days. For more detailed insights on May weather, you can check Narayanganj weather in May.

In September, temperatures remain consistently warm, with a minimum of 26°C (78°F) and an average of 29°C (85°F), similar to June, which has a minimum of 24°C (76°F) and an average of 29°C (85°F). Both months experience high maximum temperatures of around 36°C (97°F in September and 96°F in June). However, September is characterized by significantly higher precipitation levels, receiving 227 mm (8.9 in) over 24 days compared to June's 382 mm (15.1 in) across 27 days. Additionally, September tends to be more humid at 82%, while June has a slightly lower humidity of 72%. For more specifics about June weather, visit Narayanganj weather in June.

In comparing the weather between July and September, both months experience similar average temperatures, with minimums around 25-26°C (78-79°F) and maximums peaking at 36°C (97-98°F). However, July typically sees more rainfall, with a total precipitation of 341 mm (13.4 in) over 29 days, compared to September's 227 mm (8.9 in) over just 24 days. Humidity levels remain quite similar, hovering around 81-82%, making both months feel quite muggy. For a more detailed look at July conditions, you can refer to Narayanganj weather in July.

In comparing the weather of September and August, both months exhibit similar average temperatures, with a minimum of 26°C (78°F) and a maximum of 36°C (97°F) in September, slightly higher than August's maximum of 36°C (96°F). However, September experiences slightly less precipitation, totaling 227 mm (8.9 in) over 24 days, compared to August's 260 mm (10.2 in) over 27 days. Additionally, September's humidity is at 82%, slightly higher than August's 78%, indicating a more humid atmosphere as the month progresses. For a closer look at August weather conditions, check out Narayanganj weather in August.

September typically features warmer temperatures, with an average high of 36°C (97°F) and a relatively high humidity level of 82%. This month also experiences considerable rainfall, with 227 mm (8.9 inches) falling over 24 days. In contrast, October sees a slight drop in temperatures, with averages reaching a maximum of 36°C (97°F) but a minimum of 20°C (69°F), and overall humidity decreasing to 78%. Additionally, rainfall is less frequent, totaling 174 mm (6.9 inches) over just 15 days. For more detailed weather information, you can visit Narayanganj weather in October.

September and November weather exhibit notable differences in temperature, precipitation, and humidity. In September, the temperatures range from a minimum of 26°C (78°F) to a maximum of 36°C (97°F), with an average of 29°C (85°F). The month is also characterized by high humidity levels at 82% and significant rainfall, totaling 227 mm (8.9 in) over 24 days. In contrast, November experiences much cooler temperatures, with a minimum of 16°C (61°F) and a maximum of 32°C (90°F), averaging 24°C (76°F). The month is significantly drier, with only 36 mm (1.4 in) of precipitation over just 3 days and lower humidity at 68%. For more detailed insights, you can check Narayanganj weather in November.

September and December showcase a stark contrast in weather patterns. In September, temperatures range from a minimum of 26°C (78°F) to a sweltering maximum of 36°C (97°F), with an average of 29°C (85°F). The month is characterized by frequent rainfall, accumulating about 227 mm (8.9 in) over 24 days, and high humidity levels at 82%. In contrast, December brings much cooler temperatures, with a minimum of 12°C (53°F) and a maximum of 30°C (86°F), averaging around 20°C (68°F). Rainfall decreases significantly to just 56 mm (2.2 in) over 2 days, and humidity drops to 64%. For more detailed insights, you can check Narayanganj weather in December.

Compare Narayanganj's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Narayanganj

As September unfolds in Narayanganj, it brings a distinctive shift in weather patterns compared to the sweltering heat of summer, revealing a blend of warmth and humidity. With average temperatures hovering around a balmy 29°C (85°F), the month experiences a noticeable increase in rainfall, totaling 227 mm across 24 days. This significant precipitation elevates humidity levels to about 82%, creating a lush atmosphere that contrasts sharply with the drier months prior. While the temperatures still reach highs of 36°C (97°F), it's the frequent showers that punctuate the days, making September a refreshing, albeit wet, transition towards the milder months ahead. For more insights on Narayanganj's weather trends, visit Narayanganj Climate.