Last updated: August 21, 2025
In Shushtar, Iran, September brings an intense climate marked by a stunning maximum temperature of 49°C (121°F), with an average hovering around 35°C (96°F) while lows rarely dip below 20°C (69°F). The month experiences negligible rainfall, recording only 1 mm (0.0 in) over 0 precipitation days, contributing to an arid environment with humidity levels a mere 17%. This combination of soaring temperatures and low humidity creates a dry heat that defines Shushtar's late summer atmosphere, inviting both challenges and unique beauty to the landscape.
In September, Shushtar, Iran, experiences a notable transition as summer starts to wane, bringing slightly milder yet still warm temperatures. With daily minimums around 20°C (69°F) and average highs peaking at 35°C (96°F), the heat remains palpable. However, this month begins to mark a subtle shift from the extreme highs of the preceding summer; maximum temperatures reach up to 49°C (121°F), slightly lower than the intense peaks of August and July. This trend hints at an approaching cooler season while still indulging in the lingering warmth that characterizes Shushtar's climate, making it a time of palpable vibrancy as the city transitions from the scorching summer months.
In Shushtar, Iran, September is a month where the arid summer finally begins to wane, yet it maintains a stark dryness with only 1 mm of precipitation recorded—almost negligible considering the region's annual trends. Notably, this month experiences no rainy days, mirroring the preceding months of July and August, which also see minimal rainfall. This absence of moisture is sharply contrasted by the heavier downpours in October and November, where monthly averages leap to 21 mm and 137 mm, respectively. The transition toward autumn heralds a significant shift in weather patterns, suggesting a return to more typical precipitation as the year progresses. With a scant amount of rain in September, the landscape remains largely dry, setting the stage for the anticipated autumn rains that follow.
In September, Shushtar, Iran, experiences a slight uptick in humidity, measuring 17%, which is a modest increase from the ultra-dry summer months of July and August, when levels plummeted to an arid 11% and 12%. This seasonal shift signals the end of the sweltering summer, as the humidity begins to rise again, setting the stage for the more comfortable fall months. Comparatively, the humidity remains lower than earlier in the year, with levels gradually climbing towards the 33% mark by October and finally peaking at 50% by December. Overall, September marks a transitional period where the dry heat begins to yield to the more humid conditions of autumn in Shushtar.
As summer transitions to fall in Shushtar, Iran, September maintains a UV Index of 9, indicating a very high level of UV radiation, with a burn time of just 15 minutes. This marks a subtle decline from the peak summer months, where indices reached the extreme level of 11. Interestingly, while September’s index remains stable, it signals the onset of milder sun exposure compared to the sweltering heat of August. As the year progresses, one can observe a gradual easing in UV risks, transitioning to a high exposure category in October. For more detailed insights on UV exposure throughout the year, visit Shushtar UV Index.
UV Risk Categories
September in Shushtar, Iran, showcases a delightful continuation of summer's embrace, with 336 hours of sunshine illuminating the city. This month aligns closely with the peak brightness of summer, where July and August each boast over 380 hours of sun, creating a warm and vibrant atmosphere. As autumn approaches, the sunshine gently begins to wane, reflecting a gradual decline leading into October's 314 hours. Interestingly, while September signals the onset of seasonal change, it still retains a generous glow, ensuring that the days remain bright and inviting for outdoor adventures. The trend of decreasing sunshine hours hints at the transition to cooler months ahead, yet September's warmth offers a cherished respite before the year begins to cool down.
September in Shushtar, Iran, heralds the arrival of the sunniest month of the year, with a stunning 100% chance of sunny weather. Following the hottest summer months of June, July, and August—where sunshine prevailed a remarkable 98% of the time—September continues this trend of bright days, offering residents and visitors alike an ideal backdrop for outdoor activities. As the sweltering heat gradually transitions into milder temperatures, it makes for a delightful time to explore the beauty of this historic city. With a consistent track record of sunny days, September is undoubtedly the peak of sunlit joy in Shushtar, setting a vibrant tone as autumn approaches.
As summer gives way to autumn in Shushtar, Iran, September marks a transitional period with daylight lasting approximately 12 hours. This month follows the peak of 14 hours in June, showcasing a gradual decrease in sunlight as days shorten. While the 12 hours of daylight in September is a slight reduction, it still reflects the lingering warmth of summer before the daylight dips further to 11 hours in October and settles at 10 hours through the winter months. This rhythmic shift in daylight not only highlights the region's changing seasons but also sets the stage for the comfortable autumn days ahead, blending the richness of summer's light with the crispness of fall.
In September, Shushtar experiences a gentle breeze, with an average wind speed of 2.0 m/s (4 mph), slightly lower than the preceding months of the summer. This moderate flow of air marks a subtle transition from the warm summer winds that peak at 2.7 m/s (6 mph) in June, gradually tapering off as autumn approaches. Interestingly, the wind patterns over the year reveal a gradual increase from January's calm 1.7 m/s (4 mph), peaking in May and June before softening through September and into the cooler months. This consistent ebb and flow not only shapes the local climate but also adds to the serene atmosphere of Shushtar, making it a picturesque time to enjoy the landscape as it prepares for the changing seasons.
Weather in Shushtar varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Shushtar, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by scorching temperatures, with a minimum of 20°C (69°F) and a blistering average of 35°C (96°F), peaking at a staggering 49°C (121°F). This month is typically dry, recording only 1 mm of precipitation over 0 rainy days and a low humidity level of 17%. In stark contrast, January experiences much cooler temperatures, with daily highs averaging around 13°C (56°F) and reaching a maximum of 25°C (78°F). The month sees significantly more rainfall, totaling 46 mm (1.8 in) across 5 days, combined with a higher humidity level of 45%. For a more detailed look at January weather, visit Shushtar weather in January.
The weather in September and February presents a stark contrast, reflecting the seasonal shifts in climate. In September, temperatures soar, with minimums around 20°C (69°F) and peak highs reaching a sweltering 49°C (121°F), accompanied by minimal precipitation at just 1 mm over no rainy days and low humidity of 17%. In contrast, February offers a much cooler climate, with temperatures ranging from -1°C (30°F) to a comfortable average of 15°C (59°F), and maximums reaching 30°C (86°F). This month experiences more precipitation, totaling 65 mm over seven days, and a higher humidity level of 38%. For more detailed information about February weather in Shushtar, check out Shushtar weather in February.
September and March present contrasting weather patterns. In September, temperatures soar with a minimum of 20°C (69°F), an average of 35°C (96°F), and a maximum reaching a scorching 49°C (121°F). The month is characterized by extremely low precipitation, with only 1 mm registered and no rainy days, resulting in a dry and arid atmosphere with a humidity level of just 17%. In stark contrast, March sees much cooler temperatures, with a minimum of 6°C (43°F), an average of 19°C (67°F), and a maximum of 40°C (104°F). Additionally, this month experiences significantly higher precipitation at 79 mm over 6 rainy days, leading to a considerably more humid environment at 42%. For a deeper look into the weather specifics, you can explore the details here: Shushtar weather in March.
September and April present contrasting weather patterns that highlight the transition between summer and the onset of spring. In September, temperatures soar with a minimum of 20°C (69°F) and an average reaching a sweltering 35°C (96°F), peaking at an extreme 49°C (121°F). In stark contrast, April offers a more moderate climate, with temperatures ranging from a cooler minimum of 11°C (53°F) to an average of 26°C (78°F), and a maximum of 43°C (109°F). Precipitation is almost nonexistent in September, with only 1 mm recorded and no rainy days, while April experiences more moisture, totaling 38 mm over five days. Additionally, humidity levels are significantly higher in April at 39% compared to September's drier 17%. For a more detailed look at April's weather conditions, you can check Shushtar weather in April.
In September, temperatures soar with a minimum of 20°C (69°F) and an average high reaching a blistering 35°C (96°F), peaking at an extreme 49°C (121°F). The month is characterized by nearly no precipitation, recording only 1 mm (0.0 in) over the course of the month, which results in very low humidity levels around 17%. In contrast, May experiences more moderate temperatures, starting at a minimum of 18°C (65°F) and averaging 32°C (90°F), with a maximum of 48°C (119°F). Additionally, May sees some rainfall, with 12 mm (0.5 in) over one day, leading to higher humidity levels at 32%. For a detailed look at May weather, you can visit Shushtar weather in May.
In comparing the weather of September and June, both months experience extreme heat with minimal precipitation. September features a minimum temperature of 20°C (69°F) and an average of 35°C (96°F), peaking at 49°C (121°F), while June has slightly higher temperatures, starting at a minimum of 24°C (75°F), averaging 38°C (100°F), and reaching a maximum of 51°C (125°F). Interestingly, both months share a precipitation pattern of 0 mm and 0 days of rain, alongside a consistent humidity level of 17%. For a detailed look at June's weather, you can visit Shushtar weather in June.
In comparing the weather of September and July, we see notable differences in temperature and humidity. September experiences a minimum temperature of 20°C (69°F) and an average of 35°C (96°F), with a maximum reaching 49°C (121°F). Meanwhile, July has higher temperatures overall, with a minimum of 27°C (81°F), an average of 40°C (104°F), and a peak of 52°C (126°F). Both months share the same minimal precipitation of 1 mm (0.0 in) over 0 rainy days, and while September has a slightly higher humidity level at 17%, July remains drier at 11%. For a closer look at July's weather details, visit Shushtar weather in July.
In August, temperatures were notably high, with a minimum of 25°C (78°F) and an average of 39°C (102°F), reaching a scorching maximum of 51°C (124°F). The humidity level was slightly lower at 12%, and there was no recorded precipitation throughout the month. In contrast, September experienced slightly cooler temperatures, with a minimum of 20°C (69°F) and an average of 35°C (96°F), peaking at 49°C (121°F). While both months saw no rainfall, September’s humidity rose to 17%, making it feel marginally more comfortable than the extreme heat of August. For more detailed information on August weather, check out Shushtar weather in August.
September and October present a stark contrast in weather patterns. In September, temperatures soar with a minimum of 20°C (69°F) and an average high reaching up to 49°C (121°F), accompanied by extremely low humidity at 17% and virtually no precipitation. In contrast, October experiences a more temperate climate, with temperatures dropping to a minimum of 13°C (56°F) and an average high of 45°C (114°F). Notably, October also brings increased humidity at 33% and a slight increase in precipitation, with 21 mm (0.8 in) over one day. For more detailed insights, check out Shushtar weather in October.
September and November showcase a dramatic contrast in weather conditions. In September, temperatures soar with a minimum of 20°C (69°F), an average of 35°C (96°F), and a blistering maximum of 49°C (121°F), accompanied by virtually no rainfall and low humidity at 17%. In stark contrast, November experiences much cooler temperatures, ranging from a minimum of 8°C (46°F) to a maximum of 37°C (98°F), with an average of 20°C (69°F). This month is also marked by significant precipitation of 137 mm (5.4 in) over six days and increased humidity at 48%. For more detailed insights, visit Shushtar weather in November.
September and December present contrasting weather conditions. In September, temperatures soar with a minimum of 20°C (69°F) and an average high reaching a sweltering 35°C (96°F), peaking at an extreme 49°C (121°F). The month is characterized by arid conditions, experiencing minimal precipitation of just 1 mm (0.0 in) and a humidity level of only 17%. In stark contrast, December offers a much cooler climate, with temperatures ranging from a minimum of 3°C (38°F) to an average of 15°C (59°F), and a maximum of 28°C (83°F). This month is also marked by significantly higher rainfall, totaling 86 mm (3.4 in) over 7 days, leading to a much more humid environment with a humidity level of 50%. For a more detailed insight into December weather, visit Shushtar weather in December.
September in Shushtar ushers in an intense shift, with temperatures soaring to an impressive average of 35°C (96°F) and reaching peaks as high as 49°C (121°F). This month stands out with its exceptionally low humidity of 17% and a sheer absence of rainfall—0 days of precipitation resulting in just 1 mm of moisture. Unlike the cooler and wetter months that precede it, September presents a dry heat, inviting sun-seekers and those who thrive in warmer climes. For more insights into the climate characteristics of this vibrant region, visit Shushtar Climate.