Last updated: August 21, 2025
September in Isfahan, Iran, offers a warm and dry climate, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 37°C (100°F). The average temperature hovers around a pleasant 25°C (78°F), ideal for outdoor exploration. With no recorded precipitation and a low humidity level of 25%, visitors can expect clear skies and ample sunshine, making it a perfect time to experience the rich history and culture of this vibrant city.
In September, Isfahan, Iran, experiences a delightful transition into autumn with temperatures offering a comfortable mix of warmth and coolness. The minimum temperature settles at a mild 11°C (51°F), while the average rises to a pleasant 25°C (78°F), perfect for exploring the city's stunning architecture and vibrant bazaars. As daytime peaks at a maximum of 37°C (100°F), the afternoons can still feel quite warm, echoing the persistent summer heat. However, the shift towards cooler evenings creates an inviting atmosphere for after-dark adventures. This month effectively bridges the hot summer days of August and the cooler months ahead, presenting an ideal time for visitors to enjoy Isfahan’s rich cultural heritage.
In Isfahan, Iran, September marks a continuation of the region's dry spell, with no recorded precipitation or rainy days. As the summer months of June, July, and August also experienced zero rainfall, September solidifies the trend of dwindling moisture during this period. The weather pattern sharply contrasts with the rain-soaked months that follow, particularly November, which typically sees an increase in precipitation, averaging around 25 mm over four days. This shift underscores a clear seasonal transition in Isfahan, where dry summer days yield to the onset of wet autumn weather, illustrating the stark fluctuations in the region's climate.
As summer transitions to autumn, September in Isfahan, Iran, presents a noticeable shift in humidity levels. With an average humidity of 25%, the month marks a slight uptick from the 20% experienced in August, as the oppressive dry heat of summer begins to wane. This period is characterized by a gradual rehydration of the atmosphere, setting the stage for the impending autumn months, where humidity levels rise more significantly, peaking at 62% by November. Overall, September serves as a transitional month, bridging the arid summer with the more temperate and humid fall season.
As summer transitions into autumn, September in Isfahan sees a notable shift in the UV Index. With a UV Index of 10, categorized as very high, this month requires careful sun exposure management, particularly with a burn time of just 15 minutes. This trend continues from the extreme levels experienced during the height of summer, where indices peaked at 13. However, September marks a slight ease, leading into October's UV Index of 9. It's essential to stay informed and protect your skin during this time; for further details, visit Isfahan UV Index.
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As summer gracefully gives way to autumn, September in Isfahan continues to shine with 348 hours of sunlight, marking a transition from the peak solar intensity of July and June. The month begins with the lingering warmth of summer, characterized by a steady drop from the previous months' high of nearly 400 hours. This decline is reflective of a broader trend, as the long days of July slowly yield to the shorter, cooler hours of fall. Yet, September still boasts ample sunshine, making it an ideal time to explore this historic city, basking in its radiant glow before the days shorten further in October. As the sunlight begins to wane, the beauty of Isfahan remains vividly illuminated, inviting travelers to experience its charm in a warm embrace.
In September, Isfahan enjoys a remarkable 97% chance of sunny weather, making it one of the sunniest months of the year. This trend of abundant sunshine continues the upward trajectory leading from the summer months, where July and August also boast impressive figures of 90% and 85%, respectively. As the city transitions into autumn, the likelihood of clear skies remains high, with October close behind at 93%. This consistent pattern underscores Isfahan's charm during this time, ideal for exploring its rich history and stunning architecture in a warm, sunlit ambiance.
As summer fades and autumn approaches, September in Isfahan, Iran marks a gentle shift in daylight duration. After basking in 14 hours of bright sunshine during the peak of summer in June and July, the city experiences a gradual decrease, with daylight lasting about 12 hours in September. This trend reflects the transition from the longer, sun-drenched days of summer to the shorter, cozy evenings of fall. Following September, the daylight hours continue to diminish, dipping to 11 hours in October, creating a rhythmic ebb and flow throughout the year that highlights Isfahan's climatic diversity. The gradual decrease in daylight not only signals a change in seasons but also sets the stage for a beautiful tapestry of colors as the foliage begins to shift.
As September arrives in Isfahan, the wind carries a gentle and refreshing quality, averaging 1.9 m/s (4 mph), a slight dip from the more brisk summer months. This transition marks a notable shift from the peak wind speeds observed between March and July, when the winds tended to be more energetic, often reaching up to 2.8 m/s (6 mph). September's mild breezes, reminiscent of the fading summer heat, create a serene atmosphere, inviting residents and visitors alike to enjoy the city's vibrant outdoor spaces. As autumn unfolds, the calming winds herald a more tranquil climate, often encouraging leisurely strolls along Isfahan's picturesque gardens and historical sites.
Weather in Isfahan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Isfahan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with averages around 25°C (78°F) and highs reaching up to 37°C (100°F), while nights are mild with lows of 11°C (51°F). The month is dry, featuring no recorded precipitation and a low humidity of 25%. In contrast, January experiences a significant drop in temperatures, with daytime highs averaging only 4°C (40°F) and nighttime lows plummeting to -8°C (18°F). January also brings some precipitation, totaling 8 mm (0.3 in) over two days and a higher humidity level of 60%. For more detailed insights on January weather, visit Isfahan weather in January.
September and February showcase a stark contrast in weather conditions. In September, temperatures soar with a minimum of 11°C (51°F) and an average of 25°C (78°F), peaking at a sweltering 37°C (100°F). The month is also characterized by dry air, featuring no recorded precipitation and a low humidity level of 25%. In contrast, February presents a colder climate, with temperatures dipping to a minimum of -8°C (18°F) and averaging around 8°C (46°F). While February has a maximum temperature of 23°C (74°F), it also experiences some precipitation, totaling 11 mm (0.4 in) over three days, coupled with higher humidity at 56%. For more details, you can explore Isfahan weather in February.
In comparing the weather between September and March, we see a stark contrast. September boasts a warm average temperature of 25°C (78°F) with highs reaching up to 37°C (100°F) and no recorded precipitation, resulting in a low humidity level of just 25%. In contrast, March experiences cooler temperatures, averaging 12°C (55°F) with minimums as low as -5°C (24°F) and maxima of 31°C (87°F). This month also features some precipitation, with an average of 18 mm (0.7 in) over about four days and increased humidity at 60%. For more detailed insights, you can check Isfahan weather in March.
September and April present contrasting weather patterns. In September, temperatures can soar, with an average of 25°C (78°F) and a maximum reaching up to 37°C (100°F), while the humidity remains low at just 25%. In stark contrast, April experiences much cooler conditions, with average temperatures around 18°C (64°F) and minimums dipping to 1°C (35°F). Additionally, April sees some precipitation, totaling 17 mm (0.7 in) over approximately five days, leading to higher humidity levels at 54%. For a more detailed look into April's weather specifics, check out Isfahan weather in April.
In September, the weather is characterized by warm temperatures, averaging around 25°C (78°F) with a maximum reaching up to 37°C (100°F), while the nights are cooler with a minimum of 11°C (51°F). This month also boasts dry conditions, with no recorded precipitation and humidity levels at a comfortable 25%. In contrast, May experiences slightly cooler temperatures, with an average of 23°C (73°F) and minimums of 8°C (47°F), while still hitting highs of 37°C (99°F). However, May has more humidity at 49% and receives an average of 13 mm (0.5 in) of precipitation over three days. For more detailed information, you can check the link: Isfahan weather in May.
In comparing the weather patterns of September and June, September tends to be slightly cooler with average temperatures reaching 25°C (78°F) compared to June's warmer average of 29°C (85°F). While September boasts a minimum temperature of 11°C (51°F) and a maximum of 37°C (100°F), June's temperatures range from a minimum of 15°C (58°F) to a scorching maximum of 41°C (107°F). Both months experience minimal precipitation, with June recording just 1 mm (0.0 in) and September remaining completely dry with 0 mm (0.0 in). Additionally, humidity levels are higher in June at 37%, contrasting with September's lower humidity of 25%. For more detailed weather information for June, visit Isfahan weather in June.
In comparing the weather between July and September, July tends to be hotter, with average temperatures reaching 31°C (88°F) and maximums peaking at 42°C (107°F). In contrast, September offers a slightly cooler climate, with average temperatures around 25°C (78°F) and maximums hitting 37°C (100°F). Both months experience very low humidity, with July at 24% and September at 25%, and neither month sees any precipitation. If you want to know more about the specifics of July's climate, you can check Isfahan weather in July.
In comparing the weather conditions of September and August, we notice some notable differences. September displays a range of temperatures with a minimum of 11°C (51°F), an average of 25°C (78°F), and a maximum of 37°C (100°F). In contrast, August experiences warmer averages, with a minimum of 11°C (53°F), an average of 29°C (85°F), and a maximum reaching 42°C (107°F). Both months have recorded no precipitation, but August has slightly higher humidity at 20%, compared to 25% in September. For more information about August conditions, you can refer to Isfahan weather in August.
September features significantly warmer temperatures, with a minimum of 11°C and an average high reaching up to 37°C, while October sees a drop, with temperatures ranging from a low of 3°C to a high of 34°C. The humidity also increases in October to 42%, compared to just 25% in September, making the air feel noticeably different. Additionally, while September enjoys dry conditions with no recorded precipitation, October experiences a slight increase in precipitation at 3 mm, though still with no rainy days. For more detailed information about October weather, visit Isfahan weather in October.
September and November showcase a stark contrast in weather conditions. In September, temperatures soar with a minimum of 11°C (51°F), averaging a warm 25°C (78°F), and peaking at a scorching 37°C (100°F). The month is characterized by a dry atmosphere, recording no precipitation and a low humidity of 25%. In contrast, November experiences much cooler temperatures, with a minimum of -4°C (24°F) and an average of only 10°C (50°F). While daytime highs reach a more moderate 27°C (81°F), the month sees 25 mm (1.0 in) of precipitation across four days, resulting in a notable increase in humidity at 62%. For a more detailed look at November weather, visit Isfahan weather in November.
September and December present contrasting weather patterns. In September, temperatures soar from a minimum of 11°C (51°F) to a sweltering maximum of 37°C (100°F), with an average of 25°C (78°F) and virtually no rainfall, resulting in low humidity levels of just 25%. In stark contrast, December sees much cooler temperatures, ranging from a minimum of -6°C (21°F) to a maximum of 22°C (72°F), with an average of only 6°C (43°F). Additionally, December experiences some precipitation, accumulating to 11 mm (0.5 in) over two days, and higher humidity at 63%. For more details on the weather during this month, check Isfahan weather in December.
September in Isfahan brings a delightful transition as summer’s intensity begins to wane. With average temperatures around 25°C (78°F), this month offers pleasant warmth without the oppressive heat felt in the peak of summer. Unlike the humid conditions that might dominate other seasons, September maintains a refreshingly low humidity of 25%, ensuring a comfortable atmosphere for outdoor activities. The absence of rain—0 mm recorded—adds to the charm of this time of year, making it ideal for exploring the city’s stunning architecture and rich history. For those seeking to understand Isfahan's climate variations throughout the year, visit Isfahan Climate for more insights.