Last updated: August 27, 2025
In September, Karachi experiences a warm climate characterized by a maximum temperature reaching up to 36°C (97°F), with an average of 29°C (84°F) and a comfortable minimum of 25°C (77°F). This month witnesses sporadic rain, with precipitation totaling 31 mm (1.2 in) over approximately 3 days, contributing to a humidity level of 69%. While the heat remains predominant, the brief showers bring a refreshing relief to the bustling city, making it a month of dynamic weather patterns that blend warmth with occasional moisture.
In September, Karachi transitions into the last stretch of summer, with temperatures reflecting a lingering warmth before the cooler months set in. The average temperature hovers around a balmy 29°C (84°F), while minimums rarely dip below 25°C (77°F) and maximums can reach up to 36°C (97°F). This month showcases a slight dip from the scorching highs of summer, yet the atmosphere remains vibrant and lively. With humidity levels typically rising, the city feels a bit more tropical, making it essential for both locals and visitors to stay hydrated. As summer wanes and the onset of fall approaches, September serves as a transitional time, blending the lingering heat of summer with the promise of cooler days ahead.
In September, Karachi experiences a notable shift in precipitation, with 31 mm (1.2 in) of rain falling over three days. This increase follows August's peak, when the city received 81 mm (3.2 in) over six days, marking the height of the monsoon season. The rainfall in September is significantly higher than the dry months preceding it, such as April and May, which recorded no rainfall at all. Interestingly, this month acts as a transitional period where the humid summer relinquishes some of its grip, leaving a hint of moisture before the drier months of October and November. As such, September remains a crucial month, reflecting both the tail end of the monsoon and the gradual shift toward the drier season, illustrating Karachi's unique climatic patterns.
In September, Karachi experiences a notable dip in humidity compared to the sweltering summer months, settling at 69%. This marks a slight decrease from the peak humidity levels of July and August, which soared to 73% and 77% respectively. As the monsoon season winds down, the humidity begins to recede, signaling the transition towards a drier period in the coming months. Despite this decline, September still retains a significant level of moisture in the air, making it a key month for weather patterns in the region. Following this, humidity will continue to drop further as October approaches, leading into the crisp air of autumn.
In September, Karachi experiences a UV Index of 10, categorized as very high, which means you should be cautious under the sun. With a burn time of just 15 minutes, this month's UV levels signal a notable drop from the extreme conditions seen in July and August, yet still demand attention for skin protection. As summer transitions towards fall, the weather remains intense, indicating the need for sunscreen and protective measures, especially during midday hours. If you're planning outdoor activities, it’s crucial to stay informed—check out the latest updates on the Karachi UV Index to ensure a safe and enjoyable experience in the sun!
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As September unfolds in Karachi, the city benefits from an impressive 319 hours of sunshine, contributing to its vibrant atmosphere. This month represents a gentle decline from the peak of 374 hours in May, yet maintains a solid brightness compared to the earlier months of the year. Transitioning from summer to early autumn, September's sunshine lingers delightfully as daylight hours begin to taper off, paving the way for the cooler months ahead. The gradual decrease in sunlight is a consistent pattern as the year progresses, but the warmth of Karachi’s September still offers ample opportunities for outdoor enjoyment and exploration.
In September, Karachi experiences a decline in sunny weather, with only a 44% chance of sunshine. This marks a notable drop from the summer months, where June and July see the lowest probabilities of sun, at 62% and 28% respectively. As the city transitions from the sultry summer into the more temperate autumn, September stands out for its increasing cloud cover and occasional rains, making it one of the less favorable months for sun-seekers. However, as October approaches, the skies clear significantly, returning to a robust 88% chance of sunny days, suggesting that while September may not shine, the promise of brighter days is just around the corner.
As September arrives in Karachi, the city enjoys a comfortable 12 hours of daylight, marking a transition from the sun-soaked days of summer. Following a peak of 13 hours in May through August, the daylight gradually decreases, hinting at the approach of autumn. This pattern reflects a subtle ebb and flow of sunlight throughout the year, where each month offers its own rhythm. After September, the days continue to shorten, dropping to 11 hours in October and then 10 hours by November and December. This seasonal shift not only influences daily activities but also enriches the ambiance of the city, inviting residents to relish the lingering warmth of daylight before the shorter days of winter set in.
As September arrives in Karachi, the city's breezes begin to soften after the summer's peak. With an average wind speed of 5.1 m/s (11 mph), September marks a gentle decline from the summer highs of 7.5 m/s (17 mph) in July. This month serves as a transition, where the winds shift from their vigorous summer strength to a more moderate flow, echoing the city's gradual easing into autumn. Notably, September's winds are still robust compared to the earlier months of the year, such as January's calm 3.4 m/s (8 mph). This indicates that while Karachi's winds may be easing, they retain a refreshing vitality that continues to breathe life into the city.
Weather in Karachi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Karachi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a comfortable minimum of 25°C (77°F) to a scorching maximum of 36°C (97°F), with an average of 29°C (84°F). The month sees some precipitation, totaling 31 mm (1.2 in) over three days, coupled with high humidity at 69%. In contrast, January offers much cooler conditions, with temperatures fluctuating between a minimum of 12°C (54°F) and a maximum of 27°C (81°F), averaging just 19°C (67°F). Rain is scarce in January, with only 5 mm (0.2 in) of precipitation and typically no rainy days, while humidity drops significantly to 35%. For more details, check out Karachi weather in January.
September and February present quite contrasting weather patterns. September is characterized by a warm climate, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 36°C (97°F) and an average of 29°C (84°F). It also sees occasional rainfall, with roughly 31 mm (1.2 in) of precipitation over three days, contributing to a higher humidity level of 69%. In stark contrast, February offers a milder experience, with temperatures dipping down to a minimum of 14°C (57°F) and peaking at 30°C (87°F), averaging around 22°C (72°F). The month is notably dry, with only 1 mm (0.0 in) of precipitation, and a comfortable humidity level of 39%. For a detailed overview of February's climate, you can visit Karachi weather in February.
September and March present distinctly different weather characteristics. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). This month experiences more humidity at 69% and a modest amount of precipitation totaling 31 mm (1.2 in) over three days. In contrast, March brings milder conditions, with temperatures ranging from a low of 16°C (62°F) to a high of 34°C (94°F), averaging 25°C (77°F). This month is notably drier, recording only 1 mm (0.1 in) of precipitation over no rainy days and featuring significantly lower humidity at 42%. For more detailed insights, you can check out Karachi weather in March.
In September, the weather is notably warmer, with average temperatures reaching 29°C (84°F) and maximum highs soaring to 36°C (97°F). The humidity is also quite high at 69%, and the month experiences some rainfall, with about 31 mm (1.2 in) occurring over three days. In contrast, April presents a slightly cooler atmosphere, with average temperatures around 28°C (83°F) and similarly high maximum temperatures peaking at 36°C (96°F). Remarkably, April is dry, boasting no recorded precipitation or rainy days, and a significantly lower humidity level of 40%. For more details on the conditions in April, you can visit Karachi weather in April.
In comparing the weather of September and May, we note that both months experience warm temperatures, but May is generally hotter, with maximums reaching up to 39°C (102°F) compared to September's peak of 36°C (97°F). September features a slightly lower average temperature of 29°C (84°F), while May averages around 30°C (86°F). Additionally, September sees some precipitation, receiving about 31 mm across three days, whereas May remains nearly dry with only 1 mm of rainfall and no rainy days. The humidity levels also differ, with September exhibiting a higher humidity of 69%, while May has a much drier atmosphere at 49%. For more specific details about the weather in May, visit Karachi weather in May.
In September, the weather features a minimum temperature of 25°C (77°F) and an average high of 29°C (84°F), resulting in a generally warmer yet less oppressive atmosphere than June, where temperatures start at a minimum of 28°C (82°F) and reach an average maximum of 31°C (87°F). Notably, September experiences more precipitation, with about 31 mm (1.2 in) over three days, compared to just 10 mm (0.4 in) over a single day in June. Additionally, humidity is higher in September at 69%, while June boasts a more comfortable 54%. For a detailed look at June's weather, visit Karachi weather in June.
In comparison between September and July, both months exhibit warm temperatures, though July is slightly hotter overall. In July, the minimum temperature reaches 27°C (81°F) with an average of 30°C (86°F) and a maximum of 37°C (99°F), while September's temperatures range from a minimum of 25°C (77°F) to an average of 29°C (84°F), peaking at 36°C (97°F). September tends to be less rainy, with only 31 mm (1.2 in) of precipitation over 3 days, contrasting with July’s 54 mm (2.1 in) over 8 days. Humidity levels are also a bit higher in July at 73% compared to 69% in September. For more detailed insights on Karachi weather patterns, you can visit Karachi weather in July.
In comparing the weather between August and September, both months maintain a similar average temperature of 29°C (84°F); however, September experiences slightly lower minimum and maximum temperatures, with a minimum of 25°C (77°F) and a maximum of 36°C (97°F). August is characterized by higher humidity levels at 77% compared to September's 69%, making it feel a bit more oppressive. Additionally, precipitation in August is significantly higher at 81 mm (3.2 in) over 6 days, compared to September's 31 mm (1.2 in) over just 3 days, indicating that September is generally drier. For more detailed insights, you can check out Karachi weather in August.
September and October show a gradual decline in temperatures and humidity levels, signaling the transition into the cooler months. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F) and a humidity of 69%. Precipitation is moderately higher in September, with 31 mm (1.2 in) falling over 3 days. In contrast, October sees slightly lower temperatures, with a minimum of 23°C (73°F), an average of 28°C (83°F), and a maximum of 36°C (96°F). The month experiences less rainfall, totaling only 19 mm (0.7 in) over just 1 day, and a reduction in humidity to 60%. For more details, you can check Karachi weather in October.
September and November feature contrasting weather patterns. In September, temperatures are generally higher, with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at a maximum of 36°C (97°F). The month also sees moderate rainfall, totaling 31 mm (1.2 in) over three days, and a humidity level of 69%. In contrast, November offers a much cooler climate, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 33°C (92°F), and an average temperature of 25°C (78°F). Notably, November is much drier, receiving only 1 mm (0.0 in) of precipitation and experiencing no rainy days, accompanied by lower humidity levels of 44%. For more detailed insights, you can check Karachi weather in November.
September and December exhibit stark differences in weather patterns. In September, temperatures are quite high, with minimums around 25°C (77°F) and maximums reaching up to 36°C (97°F), accompanied by a significant average of 29°C (84°F). The month also sees a moderate level of precipitation, with about 31 mm (1.2 in) falling over three days, and humidity remains quite high at 69%. In contrast, December boasts much cooler temperatures, featuring a minimum of 13°C (55°F) and an average of 21°C (70°F), with maximums capping at 30°C (86°F). This month experiences minimal rainfall of just 3 mm (0.1 in) over no rainy days, and the humidity drops noticeably to 39%. For more details, check Karachi weather in December.
As September settles in, Karachi experiences a transition marked by warm temperatures and a slight increase in humidity compared to the summer months. With the average temperature hovering around 29°C, the city enjoys a balance between intense heat and gentle breezes. While the maximum can reach a sweltering 36°C, the warm nights, typically minimum at 25°C, offer a hint of relief. Additionally, September sees some sporadic rain, registering about 31 mm over just a few days, providing a refreshing contrast to the earlier dry spell. This month truly sets the stage for the upcoming autumn, making it a unique and pleasant time in the city. For a comprehensive understanding of Karachi's weather patterns, explore more at Karachi Climate.