Last updated: August 27, 2025
September in Islamabad, Pakistan, offers a warm climate, marked by a maximum temperature reaching 37°C (99°F), while the average settles at a comfortable 28°C (82°F). The evenings cool down with temperatures dipping to a pleasant minimum of 19°C (66°F). With a humidity level of 59%, the air retains some tropical flair. Rainfall during this month totals 56 mm (2.2 in), spread over 8 days, providing much-needed relief from the heat and refreshing the landscape. This blend of warmth and occasional showers makes September a noteworthy transition month in the capital.
As summer transitions into autumn, September in Islamabad offers a welcome shift in temperatures. The month begins with pleasant warm days, boasting an average temperature of 28°C (82°F) and a peak of 37°C (99°F), providing a perfect backdrop for outdoor activities. The nights are notably cooler, dipping to a minimum of 19°C (66°F), making evenings particularly enjoyable. This slight decline from the intense summer heat signifies a gradual easing into the milder climatic conditions that characterize the later months. With clear skies and balanced temperatures, September is an ideal time to explore the vibrant city and its stunning natural surroundings, as the oppressive heat of July and August gives way to a more temperate and inviting atmosphere.
September in Islamabad marks a gentle transition from the heavy monsoon rains of July and August, with total precipitation dropping to 56 mm (2.2 in) over 8 days. This decline follows an exceptionally wet summer, where August alone recorded a substantial 208 mm (8.2 in). The cooler weather of September heralds the end of the monsoon season, offering a reprieve from the earlier deluges and setting the stage for drier months ahead. As the city prepares for October's anticipated dip to just 25 mm (1.0 in), September acts as a bridge between the lush greenery of the monsoon and the arid conditions that typically follow, highlighting the dynamic climate of the region.
In September, Islamabad experiences a significant uptick in humidity, maintaining a consistent 59%, similar to August. This rise can be attributed to the transition from the sweltering heat of summer to the cooler autumn months. The humidity levels, while relatively high, indicate a shift from the dry conditions prevalent in April and June, which recorded only 37% and 31%, respectively. As the city progresses into October, humidity continues to increase, climbing to 68%. This trend highlights the onset of a more humid season, setting the stage for the cooler and wetter months that follow, particularly as winter approaches when humidity peaks at 69% in November. The fluctuating levels throughout the year reflect Islamabad's unique climatic characteristics, balancing between dry summers and more humid autumns and winters.
In September, Islamabad experiences a UV Index of 9, placing it in the very high exposure category with a burn time of just 15 minutes. This month marks a transition from the extreme levels seen during the summer, where the index reached up to 11 in May through July. As the temperatures begin to decrease, the risk of UV exposure remains significant, urging residents and visitors to take protective measures while outdoors. Awareness of UV levels is particularly crucial during this period, as the sun’s intensity can still pose a danger. For more information on the UV Index in Islamabad, you can check this link: Islamabad UV Index.
UV Risk Categories
As summer transitions into autumn, September in Islamabad enjoys 326 hours of sunshine, marking a gentle decline from the sun-soaked peak of May with its impressive 380 hours. This month encapsulates the essence of change, where the air begins to cool while daylight remains abundant, providing a comfortable backdrop for outdoor activities. Following the consistent brightness of the preceding months, September offers more sunlight than the upcoming months, like October with 318 hours, yet less than the sizzling days of summer. This trend illustrates how Islamabad's sunshine hours gradually ebb, crafting a perfect blend of warmth and relief for its residents as they bid farewell to the long, hot days of summer.
September in Islamabad boasts a notable likelihood of sunny weather, with a sunshine probability of 80%, mirroring the brightness of January and outshining many of the summer months. This trend reflects a transitional phase as the city shifts from the sultry heat of August to the more temperate days of autumn. As the sweltering summer recedes, the consistent sunny spells in September pave the way for pleasant outdoor activities, making it an ideal time for residents and travelers alike to bask in the warmth before the cooler months roll in. With the keen blend of warmth and sunshine, September stands out as a favorable period for enjoying the beauty of Islamabad.
As September arrives in Islamabad, the length of daylight begins to transition into the shorter days of autumn, with a total of 12 hours of daylight. This marks a gradual decline from the peak of 14 hours experienced in the summer months of June and July. Following a consistent trend, daylight duration starts to wane after the vibrant daylight of summer, reflecting a natural rhythm of the seasons. The earlier spring months, with their brightening days of 11 hours in March and 13 hours in April and May, provide a stark contrast to September's softening light, which then gives way to 11 hours in October and dwindles further into the winter months. This shift highlights the cyclical nature of daylight in Islamabad, where each month gracefully transitions into the next, inviting residents to embrace the changing seasons.
As September unfolds in Islamabad, a gentle breeze graces the city, with average wind speeds dropping to 1.7 m/s (4 mph). This calming shift mirrors the transitional essence of the month, as the sweltering summer gives way to the cooler embrace of autumn. Interestingly, September's winds are consistent with the quieter gusts experienced in August, hinting at a time for reflection before the winds pick up again in October. Overall, this month leads into a seasonal pattern where the climate gradually becomes more dynamic, inviting residents to step outdoors and savor the changing landscapes.
Weather in Islamabad varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Islamabad, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. September typically enjoys warm temperatures, with a minimum of 19°C (66°F) and an average peak of 28°C (82°F), often reaching as high as 37°C (99°F). Despite experiencing some rainfall, with about 56 mm (2.2 in) over 8 days, humidity remains relatively moderate at 59%. In contrast, January offers a much cooler climate, characterized by a minimum temperature of 1°C (35°F) and an average of 10°C (51°F), with highs reaching only 21°C (70°F). The month sees increased precipitation, totaling 77 mm (3.0 in) over the same number of days, and a slight rise in humidity to 61%. This seasonal shift dramatically influences the overall experience of the weather. For more detailed information, you can check Islamabad weather in January.
The weather in September is significantly warmer than in February, with temperatures ranging from a minimum of 19°C (66°F) to a hot average of 28°C (82°F), and reaching as high as 37°C (99°F). In contrast, February experiences much cooler temperatures, with a minimum of 4°C (40°F) and an average of 14°C (57°F), peaking at a comfortable 25°C (78°F). While September sees around 56 mm (2.2 in) of precipitation over 8 days, February records slightly more precipitation at 64 mm (2.5 in), but over just 6 days, contributing to a similar humidity level of 55% in both months. For more detailed insights, you can check Islamabad weather in February.
In September, the weather is characterized by warmer temperatures, with a minimum of 19°C (66°F) and an average of 28°C (82°F), peaking at 37°C (99°F). The month experiences moderate precipitation, totaling 56 mm (2.2 in) over approximately 8 days, coupled with a humidity level of 59%. In contrast, March is much cooler, featuring a minimum temperature of 6°C (43°F) and an average of 18°C (65°F), with a maximum reaching 35°C (96°F). March sees higher precipitation at 97 mm (3.8 in) spread over 9 days, though with lower humidity at 47%. For a detailed look at March weather, visit Islamabad weather in March.
September and April present contrasting weather conditions in Islamabad. September usually features a warmer average temperature of 28°C (82°F), with highs reaching up to 37°C (99°F), while April is milder with an average of 23°C (74°F) and maximum temperatures that can peak at 38°C (101°F). Precipitation is more prevalent in April, totaling 92 mm (3.6 in) over about 9 days compared to September's 56 mm (2.2 in) spread across 8 days. Additionally, September's humidity of 59% makes it feel more muggy, in contrast to the much lower 37% humidity in April. For more detailed information, you can visit Islamabad weather in April.
When comparing the weather in September and May, we can observe some notable differences despite both months having similar average temperatures of 28°C (82°F). September experiences slightly higher minimum temperatures, with a low of 19°C (66°F), while May starts off a bit cooler at 17°C (62°F). However, May can reach a maximum temperature of 42°C (107°F), significantly higher than September's peak of 37°C (99°F). In terms of precipitation, September sees a bit more rain with 56 mm (2.2 in) over 8 days compared to May's 42 mm (1.6 in) over 7 days. Moreover, September maintains a higher humidity level at 59%, contrasting with May's lower humidity of 38%. For more specific details about May weather, you can visit Islamabad weather in May.
In comparing the weather between September and June, we notice a few notable differences. September features a minimum temperature of 19°C (66°F) and an average of 28°C (82°F), while June holds slightly higher temperatures, with a minimum of 20°C (69°F) and an average of 31°C (87°F). The maximum temperature in June can soar to a scorching 45°C (113°F), compared to September's maximum of 37°C (99°F). Additionally, September tends to be more humid at 59%, whereas June has a much lower humidity level of 31%. Precipitation is slightly greater in September, with 56 mm (2.2 in) over about 8 days, compared to June's 39 mm (1.5 in) over 7 days. For a detailed look at the weather conditions in June, you can check Islamabad weather in June.
In comparing the weather of September and July, September tends to be slightly milder, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 37°C (99°F), while July experiences higher temperatures, with a minimum of 22°C (72°F) and a peak reaching 42°C (108°F). Additionally, September sees less precipitation, averaging 56 mm (2.2 in) over 8 days, compared to July, which has a significantly higher 167 mm (6.6 in) spread over 18 days. Furthermore, humidity levels are higher in September at 59%, while July maintains a lower humidity of 50%. For more detailed information, you can visit Islamabad weather in July.
In comparing the weather of September to August, we notice that September experiences slightly cooler temperatures with a minimum of 19°C (66°F) and an average of 28°C (82°F), while August has higher temperatures, ranging from a minimum of 22°C (71°F) to an average of 29°C (84°F). Although September's maximum temperature is 37°C (99°F), it falls short of August's peak of 38°C (100°F). Additionally, September has significantly less precipitation, with 56 mm (2.2 in) over 8 days compared to August's 208 mm (8.2 in) over 17 days. Humidity remains consistent at 59% for both months. For more detailed information, you can view the Islamabad weather in August.
In September, the weather in Islamabad is characterized by warmer temperatures, with a minimum of 19°C (66°F) and an average high reaching up to 37°C (99°F). The month also sees increased precipitation at 56 mm (2.2 in) over around 8 days, coupled with a humidity level of 59%. In contrast, October experiences a noticeable drop in both temperature and rainfall. The minimum temperature falls to 13°C (56°F) and the average high is about 36°C (97°F). Rainfall decreases significantly to just 25 mm (1.0 in) over 2 days, and humidity rises slightly to 68%. For more details, you can check the weather specifics here: Islamabad weather in October.
In September, the weather is characterized by warm temperatures, with an average high of 28°C (82°F) and peaks reaching up to 37°C (99°F), accompanied by 56 mm (2.2 in) of precipitation over about 8 days and humidity levels around 59%. In contrast, November brings a significant drop in temperatures, featuring a cooler average of 16°C (61°F) and maximums of 29°C (84°F). Precipitation in November decreases to 40 mm (1.6 in) over just 4 days, while humidity rises to 69%. For more detailed insights, you can visit Islamabad weather in November.
In September, Islamabad experiences warm temperatures, with a minimum of 19°C (66°F) and an average high of 28°C (82°F), peaking at 37°C (99°F). The month sees a considerable amount of precipitation, totaling 56 mm (2.2 in) over approximately 8 days, accompanied by a humidity level of 59%. In contrast, December brings a significant drop in temperatures, with a minimum of 1°C (35°F) and a mild maximum of 23°C (74°F), displaying an average temperature of 11°C (53°F). Rainfall is less frequent during this month, totaling only 31 mm (1.2 in) over about 3 days, while humidity rises slightly to 68%. For more detailed information, visit Islamabad weather in December.
As September unfolds in Islamabad, the weather begins to transition from the intense heat of summer, with maximum temperatures reaching up to 37°C (99°F). This month brings a refreshing average temperature of 28°C (82°F), making outdoor activities more enjoyable. Humidity levels hover around 59%, and occasional rainfall, with about 56 mm of precipitation over 8 days, adds a hint of freshness to the air. Compared to the scorching summer months, September offers a welcome change, signaling the approach of the milder autumn season. For a deeper understanding of the city's climate dynamics, check out Islamabad Climate.