Last updated: August 21, 2025
In September, Cox's Bazar experiences a tropical climate characterized by warm temperatures and significant rainfall. The maximum temperature reaches a sweltering 32°C (90°F), while the average temperature hovers around a comfortable 28°C (82°F). Nights are mild, with temperatures dipping to a minimum of 25°C (77°F). This month is marked by high humidity levels of 81%, creating a muggy atmosphere. Travelers should be prepared for rain, as 331 mm (13.0 in) of precipitation falls over an average of 26 days, making it one of the wettest months in this picturesque coastal destination.
In September, Cox's Bazar continues to bask in the warmth of summer, with temperatures consistently high. The minimum temperature holds steady at around 25°C (77°F), while the average hovers at a comfortable 28°C (82°F). With a maximum of 32°C (90°F), the heat remains palpable, mirroring the prevailing conditions of the preceding months. This month marks a slight decline in maximum temperatures compared to the peaks of late spring and summer, showcasing a subtle transition towards the cooler seasons ahead. The combination of warm nights and pleasant afternoons makes September an inviting time for beachgoers and nature lovers seeking to experience the vibrant surroundings of this coastal paradise.
In September, Cox's Bazar experiences a significant precipitation amount of 331 mm (13.0 in), marking a noticeable tapering off from the peak monsoon patterns seen in the preceding months. While the rains begin to wane after the intense deluges of July and August, with those months recording 769 mm (30.3 in) and 445 mm (17.5 in) respectively, September still maintains a high frequency of rainfall, occurring over 26 days. This consistent rainfall contributes to the lush greenery of the region, even as it foreshadows the transition into drier months ahead. As the monsoon's grip loosens, locals and visitors alike appreciate the dynamic climate of Cox's Bazar, which ebbs into a more moderate spell of October with 224 mm (8.8 in) expected over 18 days.
As the summer wanes in Cox's Bazar, Bangladesh, September experiences a slight dip in humidity, averaging 81%. This marks a continuation of the trend from the preceding months, where humidity peaks in the heart of the monsoon with July and August seeing averages of 86% and 85% respectively. As the season transitions into autumn, the humidity begins to decrease, bringing a sense of relief after the oppressive summer months. Notably, this month retains a relatively high level of moisture compared to the earlier part of the year, with January kicking off at a lower 61%. Overall, September serves as a bridge, balancing the lingering humidity of the rainy season with the impending drop that falls in October, setting the stage for drier days ahead.
As September in Cox's Bazar, Bangladesh unfolds, the UV Index remains at a striking 13, categorizing the exposure as extreme and maintaining a brisk burn time of just 10 minutes. This trend of high UV levels continues from the preceding months of June, July, and August, which also recorded the maximum index of 13. The region experiences a significant peak in UV radiation during this time, necessitating vigilant sun protection measures. As the year progresses into October, a slight decrease is expected, dropping to an index of 11, yet the threat remains notable. For those spending time in the sun, understanding these patterns is crucial for staying safe. For more detailed information, refer to the Cox's Bazar UV Index.
UV Risk Categories
In September, Cox's Bazar basks in a delightful 273 hours of sunshine, embracing a warm transition from the sweltering summer months. Following a peak in sunlit days during May, the hours gradually dip yet remain inviting, fostering perfect beach days before the arrival of the monsoon season. As the year progresses, sunshine hours tend to fluctuate, with March and May boasting the highest records, while the slightly cloudier June and July provide a balanced reprieve. The consistent return of sunshine in the autumn months, especially in October and November, suggests a captivating blend of warmth and clarity, making it an ideal time for visitors to explore this stunning coastal paradise. With nature's canvas painted in vibrant hues, September stands as a gentle reminder of summer's lingering embrace while hinting at the upcoming seasonal shifts.
September in Cox's Bazar, Bangladesh, marks a notable transition in weather patterns, with only a 14% chance of sunny days. Following the monsoon months of July and August, which see an exceptionally low likelihood of sunshine at 5% and 7% respectively, September still grapples with lingering clouds and rain. This month sits at the cusp of the wetter season, making it one of the least favorable for sun-seekers. However, as one moves towards October, the chances of clear skies increase significantly to 38%, signaling the start of a more favorable stretch as the region prepares to shake off the monsoon's grip. While September may not be ideal for those chasing sunshine, it can serve as a peaceful interlude before the brighter days return.
As September unfolds in Cox's Bazar, Bangladesh, the city enjoys a pleasant 12 hours of daylight, mirroring the light-filled days of the preceding months of May through August. This consistent duration reflects a gradual transition from the longer days of summer, where daylight peaks at 13 hours, to the shorter days that characterize the upcoming months. Following this pattern, October will see a slight reduction back to 11 hours, indicating the approach of the cooler season. Overall, September serves as a delightful midpoint, striking a balance before the daylight begins to wane in the fall.
In Cox's Bazar, September brings a gentle breeze as the average wind speed settles at 3.4 m/s (8 mph). This slight dip in wind strength follows the peak of summer, where a noticeable increase in wind speed was observed during the previous months, particularly in July and June, with averages of 4.7 m/s (11 mph) and 4.5 m/s (10 mph), respectively. With the monsoon easing and the transition to autumn beginning, September's winds evoke a refreshing calmness, creating an inviting atmosphere for beachgoers and nature enthusiasts alike. The consistent wind patterns throughout the year reveal a notable peak during the mid-year months, while the cooler season approaches brings a return to milder breezes, reminiscent of the tranquility that defines Cox's Bazar's charm.
Weather in Cox's Bazar varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cox's Bazar, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present two distinct weather patterns. In September, temperatures are warm, with minimums averaging 25°C (77°F) and maximums reaching 32°C (90°F), accompanied by high humidity at 81%. This month also experiences significant rainfall, with a total precipitation of 331 mm (13.0 in) spread over 26 days, creating a lush and humid environment. In contrast, January features milder temperatures, ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), with much lower humidity at 61%. The dry conditions of January are evident, with only 13 mm (0.5 in) of precipitation through just one day of rainfall. For more information, check out Cox's Bazar weather in January.
September and February present two distinct weather patterns. In September, the temperatures are notably warmer, with minimums around 25°C (77°F) and maximums reaching up to 32°C (90°F). This month is also characterized by high humidity at 81% and significant rainfall of 331 mm (13.0 in) spread over 26 days, creating a rather damp environment. In contrast, February enjoys milder temperatures, with minimums of 14°C (57°F) and maximums peaking at 29°C (85°F). This month is much drier, receiving only 1 mm (0.0 in) of precipitation over the entire month and boasting a lower humidity level of 65%. For more detailed insights, check Cox's Bazar weather in February.
September and March exhibit distinct weather patterns. In September, temperatures are generally warmer, with a minimum of 25°C (77°F) and an average of 28°C (82°F), reaching highs of 32°C (90°F). This month is also characterized by significant rainfall, averaging 331 mm (13.0 in) over 26 days, coupled with high humidity levels at 81%. In contrast, March offers a more temperate climate, featuring cooler minimums of 18°C (65°F) and a comfortable average of 26°C (78°F), with maximum temperatures peaking at 34°C (93°F). Additionally, March sees sparse precipitation, with only 27 mm (1.1 in) occurring over just 2 days and humidity levels at a lower 74%. For more detailed insights into March conditions, visit Cox's Bazar weather in March.
September and April present distinct weather patterns and conditions. In September, daily temperatures range from a minimum of 25°C (77°F) to a maximum of 32°C (90°F), with an average of 28°C (82°F). This month is characterized by heavy rainfall, accumulating 331 mm (13.0 in) over 26 days, along with high humidity levels at 81%.
In contrast, April offers slightly warmer temperatures, with a minimum of 23°C (73°F) and a peak of 34°C (94°F), while the average remains at 28°C (83°F). Precipitation in April is minimal, totaling just 29 mm (1.2 in) over 4 days, and humidity is comparatively lower at 78%. For more details on specific weather conditions, check out Cox's Bazar weather in April.
When comparing the weather in September and May, it's clear that both months offer warm temperatures, but they differ significantly in precipitation. September experiences a minimum temperature of 25°C (77°F) and an average of 28°C (82°F), with maximums reaching up to 32°C (90°F), accompanied by a notable 331 mm (13.0 in) of rain over 26 days at a humidity level of 81%. In contrast, May tends to be warmer overall, with a minimum of 23°C (75°F), an average temperature of 29°C (84°F), and peaks hitting a sweltering 36°C (97°F), while receiving much less rainfall at 95 mm (3.7 in) across 15 days, with humidity slightly higher at 83%. For more details about the weather in May, you can refer to Cox's Bazar weather in May.
When comparing the weather in September and June, both months share similar temperature ranges, with minimums around 25°C (77°F) and averages near 28°C (82°F). However, June tends to be slightly hotter with a maximum temperature of 33°C (92°F) compared to September's 32°C (90°F). In terms of precipitation, there is a significant difference; June experiences much heavier rainfall, with a staggering 644 mm (25.3 in) over 28 days, while September sees 331 mm (13.0 in) over 26 days. Humidity levels remain fairly consistent, hovering around 81% in September and slightly higher at 82% in June. For a more detailed look at the weather specifics in June, you can check Cox's Bazar weather in June.
When comparing the weather in September and July, both months exhibit warm temperatures, with July slightly cooler on average at 27°C (81°F) compared to September's 28°C (82°F). However, July is characterized by significantly higher precipitation, recording 769 mm (30.3 in) over 30 days, versus September's 331 mm (13.0 in) over 26 days. Furthermore, July experiences a higher humidity level at 86%, compared to September's 81%. For more detailed insights, you can refer to Cox's Bazar weather in July.
In comparing the weather of September to that of August, both months feature similar temperature ranges, with September slightly cooler, having a maximum of 32°C (90°F) compared to August's 31°C (88°F). However, September experiences significantly lower precipitation, totaling 331 mm (13.0 in) over 26 days, while August records 445 mm (17.5 in) over 30 days. Additionally, September's humidity is marginally lower at 81% compared to August's 85%. For more detailed information, you can check the Cox's Bazar weather in August.
In September, the weather tends to be hot and humid, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F). The month also experiences substantial rainfall, with a total precipitation of 331 mm (13.0 in) spread across 26 days, contributing to a high humidity level of 81%.
Conversely, October brings slightly cooler evenings, with a minimum temperature of 22°C (71°F) and average temperatures hovering around 27°C (82°F). The maximum temperature increases slightly to 33°C (91°F), but the overall precipitation decreases to 224 mm (8.8 in) over 18 days, resulting in a lower humidity level of 78%. This transition makes October a more pleasant month compared to the oppressive conditions often felt in September. For more detailed weather information, you can visit Cox's Bazar weather in October.
In September, the weather is hot and humid, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 32°C (90°F) and an average of 28°C (82°F). This month also experiences significant rainfall, totaling 331 mm (13.0 in) over 26 days, contributing to a high humidity level of 81%.
In contrast, November brings more moderate conditions, with temperatures dropping slightly; the minimum is 19°C (67°F) and the maximum reaches 31°C (88°F), averaging 26°C (78°F). Rainfall is considerably less in November, with only 40 mm (1.6 in) recorded over just 3 days, and humidity decreases to 70%. For more detailed information, check out Cox's Bazar weather in November.
In September, the weather is markedly warmer and more humid, with average temperatures hovering around 28°C (82°F) and a high of 32°C (90°F). The month sees significant rainfall, totaling 331 mm (13.0 in) across 26 days, leading to a humidity level of 81%. In contrast, December offers a much cooler and drier climate, with average temperatures of 22°C (72°F), a maximum of 30°C (86°F), and minimal precipitation of just 15 mm (0.6 in) over 2 days, resulting in a reduced humidity of 64%. For more detailed information about the weather in December, you can visit Cox's Bazar weather in December.
As September unfolds in Cox's Bazar, the weather reveals a distinct character compared to the preceding months. With high humidity levels and a substantial amount of rainfall, it marks the transition into the monsoon season, leading to lush landscapes but also frequent downpours. Temperatures remain warm, ideally suited for those who enjoy tropical climates, yet the persistent precipitation can alter outdoor plans. This month's blend of warmth and moisture creates a unique ambiance, setting September apart in the annual weather cycle. For those interested in exploring more about what to expect throughout the year, visit Cox's Bazar Climate.