September Weather in Rasht, Iran

Last updated: August 21, 2025

In September, the weather in Rasht, Iran showcases a vibrant mix of warm temperatures and notable rainfall. With daytime highs reaching up to 36°C (97°F) and an average of 22°C (72°F), the month presents a comforting warmth that transitions into cooler nights, dropping to a minimum of 12°C (53°F). Rasht experiences significant precipitation, totaling 179 mm (7.0 in) over the course of 15 days, contributing to its lush landscape. The humidity remains relatively high at 58%, adding to the region's characteristic climate. Overall, September in Rasht is marked by its blend of warmth and moisture, creating a unique atmospheric experience.

September Temperature in Rasht

In September, Rasht experiences a transitional embrace between summer and autumn, with temperatures showcasing a warm spectrum. The month opens with a minimum of 12°C (53°F) and an average of about 22°C (72°F), while reaching a blissful maximum of 36°C (97°F) on hotter days. This pattern indicates a gradual cooling trend as the city shifts away from the sweltering summer heat, yet the lingering warmth allows for delightful late-season outdoor activities. As September progresses, daily highs taper off, forecasting the upcoming cooler months, making it an ideal time to enjoy Rasht's natural beauty before autumn settles in.

September Weather in Rasht: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rasht, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rasht, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec464651576775797772635550
Data source: Temperature data for Rasht generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Rasht

In September, Rasht, Iran, experiences one of its wettest months, with an impressive 179 mm (7.0 in) of precipitation spread over 15 days. This influx of rain marks a distinct transition from the drier summer months of June and July, where precipitation levels dropped to 33 mm and 98 mm, respectively. The surge in September's rainfall not only highlights the region's seasonal patterns but also sets the stage for October's even higher average of 214 mm (8.4 in), as the autumn months continue to dominate with substantial moisture. This trend underscores Rasht's reputation as one of the wetter cities in Iran, where the landscape flourishes under rejuvenated rainfall after a dry spell.

September Precipitation Trends in Rasht

The chart displays monthly precipitation patterns in Rasht, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Rasht, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec110153114120533398102179214246126
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rasht

In September, Rasht, Iran experiences a noteworthy shift in humidity, declining to 58%, which is a significant decrease compared to the peak levels earlier in the summer. Throughout the year, humidity levels maintain a generally high profile, starting from 75% in the winter months of January and February, then gradually tapering off in the warmer summer months. As the heat of August wanes, September marks a transition towards a more moderate environment, yet it remains notably higher than the drier months of late summer. This dip signals the approach of autumn, as humidity levels rise again in October, suggesting a cyclical pattern that underscores Rasht's diverse climate throughout the year.

September Average Humidity in Rasht

This chart illustrates the average monthly humidity levels in Rasht, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Rasht is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%75%72%65%65%65%61%49%58%73%75%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rasht

As September unfolds in Rasht, Iran, residents experience a very high UV Index of 8, translating to a burn time of just 15 minutes under direct sunlight. This month continues the trend from the preceding summer, where the UV levels remained consistently high, peaking at an extreme level of 11 in May. Following a slight decrease to 9 in August, September's UV Index marks a return to heightened exposure, reminiscent of the early spring months, March and April, which also recorded an 8. With the sun’s intensity still notable, it’s crucial for both locals and visitors to protect their skin during outdoor activities. For a detailed look at UV levels throughout the year, explore the full data at Rasht UV Index.

Maximum UV Index Levels in Rasht for September

The chart shows the monthly maximum UV Index (UVI) for Rasht in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Rasht typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec448811101098643
Data source: Rasht September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Rasht

As September unfolds in Rasht, Iran, the city basks in 319 hours of sunshine, a radiant continuation of the summer's warmth. Following the peak sunlit months of May and June, which flaunt over 370 hours each, September experiences a gradual decline as autumn approaches, yet it still outshines many earlier months. This trend showcases a vibrant transition, where the lush greenery of the summer begins to soften, adorned by the golden hues of early fall. While October sees a dip to 285 hours, September remains a bright beacon before the shorter days arrive, inviting residents and visitors alike to savor the lingering warmth of the sun.

Monthly Sunshine Duration in Rasht: September Highlighted

The September sunshine duration represents the total number of hours Rasht experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec206h245h302h315h377h391h381h363h319h285h232h249h
Data source: Rasht September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rasht During September

In Rasht, Iran, the likelihood of sunny weather in September dips to 41%, showing a notable decrease compared to the brighter days of summer. Throughout the summer months, particularly in August, residents enjoy a high 74% chance of sunshine, but as September arrives, the sun seems to retreat slightly. This trend highlights a transition from the vibrant warmth of summer into the gentler, often cloudier days of fall, making September a month of change where occasional bursts of sun are interspersed with more overcast conditions. This seasonal shift invites locals to savor the fleeting days of warmth before autumn fully takes hold.

Percentage of Sunny Days in September in Rasht

The chart illustrates the percentage of sunny days in Rasht throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Rasht experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec64%43%26%51%47%71%53%74%41%29%48%60%
Data source: Rasht September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rasht in September

As the summer months gradually fade away, September in Rasht, Iran, welcomes a gentle transition in daylight duration, offering approximately 12 hours of sunlight each day. This decrease from the 14 hours experienced in the peak months of June through August marks a shift towards the shorter days of autumn. Following the vibrant bloom of summer, the daylight hours start to taper off, hinting at the cooler season ahead. The trend showcases a consistent rise from January’s 9 hours to the summer peak, and then a graceful decline as the year progresses, emphasizing the rhythmic ebb and flow of nature’s cycle in this lush region.

Average Daylight Hours in Rasht for September

The chart illustrates the variation in daylight duration in Rasht throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 54m10h 48m11h 58m13h 9m14h 10m14h 40m14h 24m13h 31m12h 23m11h 11m10h 9m9h 37m
Data source: Rasht daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Rasht

As summer yields to autumn in Rasht, the September wind presents a gentle transition, maintaining an average speed of 1.8 m/s (4 mph). This reflects a slight uptick from the tail end of the summer months, which saw a decrease in wind activity, peaking at 1.7 m/s in August. Overall, September's breeze is characteristic of the month’s shift, as it falls in line with the trend of subtle fluctuations throughout the year, with the winds typically being softer during the warmer months and beginning to gather strength as autumn approaches. As we look ahead, the winds remain relatively stable, hinting at a calm yet refreshing start to the fall season in this picturesque region of Iran.

Average September Wind Speed in Rasht

The chart displays monthly wind speed patterns in Rasht, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.02.01.81.81.81.91.71.8 m/s1.62.02.3
Data source: Rasht September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Rasht Compares to Other Months

Weather in Rasht varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rasht, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January offer contrasting weather conditions. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), with an average of 22°C (72°F). The month experiences significant rainfall, totaling 179 mm (7.0 in) over approximately 15 days, and a moderate humidity level of 58%. Conversely, January is much colder, with temperatures dropping to a minimum of -9°C (16°F) and peaking at 22°C (71°F), averaging only 8°C (46°F). This month sees less precipitation, accumulating around 110 mm (4.3 in) over about 10 days, but it has higher humidity at 75%. For detailed information about January weather, you can refer to Rasht weather in January.

September and February present stark contrasts in weather patterns. In September, temperatures range from a mild 12°C (53°F) to a sweltering 36°C (97°F), with an average of 22°C (72°F). This month sees significant rainfall, totaling 179 mm (7.0 in) across about 15 days, coupled with a moderate humidity level of 58%. In contrast, February features a much cooler climate, with temperatures dipping as low as -9°C (16°F) and peaking at 25°C (77°F), averaging only 8°C (46°F). While it experiences slightly less precipitation at 153 mm (6.0 in) over 13 days, the humidity is notably higher at 75%. For more detailed insights on February weather, you can visit Rasht weather in February.

September and March present contrasting weather profiles. In September, temperatures range from a mild 12°C (53°F) at night to a hot 36°C (97°F) during the day, with an average of 22°C (72°F). The month sees significant rainfall, totaling 179 mm (7.0 in) over 15 days, along with a humidity level of 58%. In stark contrast, March experiences much cooler temperatures, with nighttime lows dipping to -1°C (30°F) and daytime highs reaching 29°C (85°F), averaging at 11°C (52°F). Precipitation in March is also less, at 114 mm (4.5 in) over the same number of days, but the humidity is higher at 72%. For more detailed insights, check out Rasht weather in March.

When comparing the weather in September and April, significant differences emerge in both temperature and precipitation. September boasts a broader temperature range, with minimums around 12°C (53°F) and maximums soaring up to 36°C (97°F), resulting in an average of 22°C (72°F). In contrast, April tends to be cooler, featuring temperatures that range from a minimum of 2°C (35°F) to a maximum of 31°C (89°F), with an average of 14°C (57°F). Rainfall also varies, with September experiencing 179 mm (7.0 in) across 15 days, while April sees slightly less at 120 mm (4.7 in) over 13 days. Notably, April has a higher humidity level at 65%, compared to September's 58%. For a closer look at the specifics, check out Rasht weather in April.

In September, the weather features warmer average temperatures, peaking at 36°C (97°F), compared to May's average of 19°C (67°F). While both months exhibit the same maximum temperature, September experiences significantly more precipitation, with 179 mm (7.0 in) over 15 days, contrasted with May's 53 mm (2.1 in) across just 9 days. Additionally, September's humidity is slightly lower at 58%, while May has a higher humidity level of 65%, making it feel a bit more muggy. For a closer look at the specific weather conditions in May, check out Rasht weather in May.

In comparing the weather of September and June, we notice a few notable differences. September experiences a wider temperature range, with minimums dropping to 12°C (53°F) and maximums reaching up to 36°C (97°F), while June maintains relatively warm temperatures, with lows of 14°C (58°F) and highs of 35°C (96°F). Additionally, September is significantly wetter, receiving 179 mm (7.0 inches) of precipitation over 15 days compared to June's much drier 33 mm (1.3 inches) over just 5 days. Humidity levels in June are slightly higher at 65%, compared to 58% in September, adding to the distinct feeling of each month. For a more detailed look at how the weather unfolds during this period, you can check out Rasht weather in June.

In comparing the weather of September and July, both months experience similar high temperatures, with maximums reaching up to 36°C (97°F) and 36°C (98°F) respectively. However, September tends to have a lower average temperature of 22°C (72°F) compared to July’s warmer average of 26°C (79°F). Additionally, September is significantly wetter, receiving 179 mm (7.0 in) of precipitation over 15 days, while July sees only 98 mm (3.8 in) over 10 days. Humidity levels are relatively close, with September at 58% and July slightly higher at 61%. For a detailed look at July’s weather in Rasht, check out Rasht weather in July.

In comparing the weather between September and August, September experiences slightly cooler minimum and average temperatures, with a minimum of 12°C (53°F) and an average of 22°C (72°F), compared to August's minimum of 13°C (56°F) and average of 25°C (78°F). Both months can reach similar maximums, with September's peak at 36°C (97°F) and August's at 36°C (98°F). However, September sees significantly more rainfall at 179 mm (7.0 in) over 15 days, while August only receives 102 mm (4.0 in) across 10 days, resulting in a higher humidity level of 58% in September compared to August's 49%. For those interested in more details, you can view Rasht weather in August.

In September, the weather is warm, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 36°C (97°F) and an average of 22°C (72°F). The month also experiences significant rainfall, totaling 179 mm (7.0 in) over about 15 days, paired with a humidity level of 58%. In contrast, October sees cooler temperatures, with a minimum of 7°C (44°F), an average of 17°C (64°F), and a maximum of 31°C (88°F). Precipitation increases slightly to 214 mm (8.4 in) while maintaining rainfall on roughly the same number of days. Additionally, humidity rises to 73%, making October feel more damp overall. For more details on October's weather, you can visit Rasht weather in October.

September and November present notably contrasting weather patterns. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), with an average of 22°C (72°F). This month experiences significant rainfall of 179 mm (7.0 in) spread across 15 days, accompanied by a humidity level of 58%. In contrast, November brings much cooler conditions, with temperatures dropping to a minimum of 1°C (34°F) and averaging 13°C (55°F), while reaching a maximum of 27°C (81°F). Precipitation also increases in November to 246 mm (9.7 in), over the same number of rainy days, resulting in higher humidity at 75%. For more specific insights into the weather in November, you can check Rasht weather in November.

September and December present stark contrasts in weather patterns. In September, temperatures can soar with a minimum of 12°C (53°F) and a maximum reaching up to 36°C (97°F), making it a warm month with an average of 22°C (72°F). The month also experiences substantial precipitation, totaling 179 mm (7.0 in) over about 15 days, accompanied by 58% humidity. In contrast, December brings a significant drop in temperatures, with lows around -3°C (26°F) and highs peaking at 26°C (80°F), resulting in an average temperature of 10°C (50°F). The month is wetter than some might expect, with 126 mm (5.0 in) of rain over 12 days and a higher humidity of 72%. For more detailed information, check out Rasht weather in December.

Compare Rasht's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Rasht

As September unfolds in Rasht, the weather transitions into a milder vibe compared to the sizzling summer months. With an average temperature hovering around 22°C (72°F), the heat gradually recedes while still allowing for warm days under the sun. This month sees a notable increase in precipitation, bringing with it a refreshing blanket of moisture that contributes to the region's lush greenery. Unlike the drier summer, Rasht experiences approximately 15 days of rain, coupled with a relative humidity of 58%, which adds to the overall atmospheric richness. If you're interested in understanding the broader climate patterns, check out Rasht Climate for more insights.