September Weather in Mashhad, Iran

Last updated: August 21, 2025

September in Mashhad, Iran showcases a warm and dry climate, characterized by a maximum temperature peaking at 37°C (98°F) and a comfortable average of 20°C (69°F). With a strikingly low minimum temperature of 5°C (42°F), the evenings can be quite refreshing. Notably, September experiences minimal precipitation, with only 1 mm recorded and no rainy days, allowing locals and visitors alike to enjoy the sunny, 26% humidity environment throughout the month.

September Temperature in Mashhad

In September, Mashhad, Iran, experiences a delightful transition into autumn, with temperatures gradually cooling from the summer highs. The month sees a minimum temperature of 5°C (42°F), while the average settles around 20°C (69°F), and peaks at a warm 37°C (98°F). This marks a noticeable shift from the sweltering heat of August, where maximum temperatures lingered close to 38°C (100°F). As the month progresses, the days offer a pleasant warmth, ideal for outdoor activities, while the evenings turn refreshingly crisp, signaling the impending arrival of fall. This balanced climate in September makes it a charming time to explore the cultural richness of Mashhad.

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

The chart illustrates September temperature patterns in Mashhad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mashhad, 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).
JanFebMarAprMayJunJulAugSepOctNovDec343746566676807569554438
Data source: Temperature data for Mashhad 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 Mashhad

In September, Mashhad experiences a notable decline in precipitation, mirroring the dry patterns established in the preceding summer months. With only 1 mm of rainfall, recorded over 0 days of precipitation, the month marks a transition towards the arider conditions typical of late summer. This stark contrast is evident when compared to the preceding months, especially March and April, which see significantly higher totals of 73 mm and 71 mm respectively. As autumn approaches, residents anticipate a gradual increase in moisture levels, but for September, the city's dry spell continues, highlighting the region's characteristic weather fluctuations.

September Precipitation Trends in Mashhad

The chart displays monthly precipitation patterns in Mashhad, 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 Mashhad, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec21527371346111132514
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mashhad

As summer transitions into autumn in Mashhad, Iran, September brings a noticeable rise in humidity, reaching 26%. This marks a shift from the arid conditions of July and August, which recorded a striking low of 20% and 19%, respectively. The humidity begins its gradual ascent after the peak summer dryness, indicating the onset of a more humid climate that will continue into the fall months. Interestingly, October sees a further increase to 44%, setting the stage for a return to the higher humidity levels characteristic of the late year, as seen with November and December’s values hovering around 67% and 69%. This ebb and flow of humidity not only reflects the changing seasons but also enhances the unique atmospheric charm of Mashhad at this time of year.

September Average Humidity in Mashhad

This chart illustrates the average monthly humidity levels in Mashhad, 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 Mashhad is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec67%66%66%57%47%34%20%19%26%44%67%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mashhad

As September unfolds in Mashhad, Iran, the UV Index stands at 10, categorizing the exposure as very high, with a burn time of just 15 minutes. This marks a gradual decline from the extreme levels experienced in the peak summer months of May through August. Although the UV intensity is decreasing, caution is still essential as the sun remains potent. The transition from summer to autumn shows a notable shift, as the UV Index drops from 12 in August to 10 in September, yet it still warrants heightened awareness for skin protection. For more detailed insights on UV levels throughout the year, visit Mashhad UV Index.

Maximum UV Index Levels in Mashhad for September

The chart shows the monthly maximum UV Index (UVI) for Mashhad 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 Mashhad typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101212121110743
Data source: Mashhad 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 Mashhad

September in Mashhad, Iran, revels in 347 hours of sunshine, marking a gentle transition from the intense summer glow. As the days begin to shorten, this month still holds on to the radiant warmth of July’s peak at 410 hours. While sunshine hours dip from the heights of midsummer, the decrease remains mild compared to earlier months, reflecting a consistent increase in brightness from January with just 225 hours to the lively stretch of late spring and summer. This gradual ebbing of sunlight creates a charming ambiance, inviting both locals and visitors to enjoy the soft, golden hues as autumn approaches. As October rolls in with 328 hours, it hints at the cooler months ahead while still celebrating the last whispers of summer's glow.

Monthly Sunshine Duration in Mashhad: September Highlighted

The September sunshine duration represents the total number of hours Mashhad 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.
JanFebMarAprMayJunJulAugSepOctNovDec225h264h304h325h381h399h410h394h347h328h276h269h
Data source: Mashhad September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mashhad During September

September in Mashhad, Iran, boasts a *remarkable *98% chance of sunny weather, making it one of the sunniest months of the year. This trend follows the peak summer months of June and August, both of which also showcase stellar sunshine rates at 96% and 89%, respectively. As summer transitions into autumn, the consistency in high sunlight levels suggests that September offers a splendid opportunity for outdoor activities and exploration. With the likelihood of sunny skies dropping moderately in the following months, now is the perfect time to soak up the sun before temperatures begin to cool. Whether you're planning a leisurely stroll in the parks or an adventure in the surrounding landscapes, September's luminous charm is hard to resist.

Percentage of Sunny Days in September in Mashhad

The chart illustrates the percentage of sunny days in Mashhad 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 Mashhad experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec80%70%41%59%64%96%89%96%98%88%68%70%
Data source: Mashhad September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mashhad in September

As September unfolds in Mashhad, Iran, daylight begins its gentle retreat, offering around 12 hours of light each day. This marks a subtle decrease from the sun-soaked heights of 14 hours enjoyed in the summer months of June and July, while still retaining more light than the shorter days of winter. The transition from August, with its lingering 13 hours of daylight, signals a shift towards the cooler months ahead. Notably, the month of September acts as a bridge between the vibrant summer and the calming fall, allowing residents to bask in a balance of warmth and light as they prepare for the changes of October and beyond.

Average Daylight Hours in Mashhad for September

The chart illustrates the variation in daylight duration in Mashhad throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 58m10h 51m11h 58m13h 7m14h 5m14h 34m14h 19m13h 28m12h 22m11h 13m10h 13m9h 43m
Data source: Mashhad daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Mashhad

In September, Mashhad experiences a gentle breeze with an average wind speed of 2.7 m/s (6 mph), signaling a transition from the warmer summer months. This slight decrease from August's 3.0 m/s indicates a gradual shift toward the cooler autumn season. Throughout the year, wind speeds in Mashhad tend to fluctuate, peaking in the summer with July and June enjoying the strongest gusts at around 3.2 to 3.3 m/s (7 mph). Following September, the winds mellow out once again as the city approaches winter, with October and subsequent months averaging around 2.3 m/s, maintaining a consistent and calm atmosphere. This pattern reflects a serene climate, making Mashhad an attractive destination for those seeking mild weather as summer bids farewell.

Average September Wind Speed in Mashhad

The chart displays monthly wind speed patterns in Mashhad, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.42.62.42.53.23.33.02.7 m/s2.32.22.3
Data source: Mashhad September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Mashhad Compares to Other Months

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

In September, the weather is warm, with average temperatures around 20°C (69°F) and highs reaching up to 37°C (98°F), while experiencing very little precipitation and low humidity at 26%. In contrast, January brings much colder conditions, with average temperatures dropping to 1°C (35°F) and lows plunging to -13°C (10°F). During this month, precipitation is more frequent, totaling 21 mm (0.8 in) over about 4 days, alongside a noticeable increase in humidity at 66%. For a detailed look at the weather during this time, you can check Mashhad weather in January.

The weather in September and February presents a dramatic contrast. September typically enjoys milder temperatures, with averages around 20°C (69°F) and highs reaching up to 37°C (98°F), making it a warm month characterized by very little precipitation and low humidity at 26%. In stark contrast, February is much colder, with average temperatures around 3°C (38°F) and minimums plunging to -16°C (4°F). This winter month sees significant precipitation of 52 mm (2.1 in) over approximately seven days and a higher humidity level of 66%. For more detailed insights into February's weather patterns, you can visit Mashhad weather in February.

When comparing the weather in September and March, notable differences emerge. September boasts warmer temperatures, with a minimum of 5°C (42°F) and an average of 20°C (69°F), peaking at a scorching 37°C (98°F). In contrast, March experiences cooler conditions, featuring a minimum temperature of -6°C (22°F) and an average of just 8°C (47°F), climbing to a maximum of 30°C (86°F). Precipitation levels also differ significantly; September sees almost no rain with just 1 mm and no rainy days, while March has a much wetter profile with 73 mm of rain spread across 12 days, resulting in increased humidity at 66%. For more specific details, you can explore Mashhad weather in March.

September and April exhibit quite contrasting weather patterns. In September, temperatures range from a cool 5°C (42°F) at night to a scorching high of 37°C (98°F) during the day, with an average of 20°C (69°F). The month is notably dry, with only 1 mm of precipitation and no rain days, creating a low humidity level of 26%. In stark contrast, April experiences much cooler temperatures, with a minimum of -4°C (25°F) and an average of 13°C (56°F), reaching up to 30°C (87°F) at the peak. This month is characterized by significant rainfall, accumulating 71 mm across 10 days, resulting in a higher humidity level of 57%. For more detailed information about the weather in April, you can visit Mashhad weather in April.

In comparison to September, May typically features slightly cooler temperatures, with a minimum of 6°C (43°F) and an average of 19°C (66°F), while September sees a minimum of 5°C (42°F) and an average of 20°C (69°F). The maximum temperatures are also quite similar, reaching up to 36°C (97°F) in May and 37°C (98°F) in September. However, May experiences significantly higher precipitation, totaling 34 mm (1.3 in) over approximately 8 days, whereas September is remarkably dry with no recorded precipitation. Additionally, May has a higher humidity level of 47%, compared to September’s 26%. For more detailed insights on May weather, you can visit Mashhad weather in May.

In comparing the weather of September and June, we see notable differences in temperature and humidity. September boasts a wider temperature range with a minimum of 5°C (42°F) and an average of 20°C (69°F), peaking at 37°C (98°F), while June has a higher minimum of 12°C (53°F) and an average temperature of 25°C (76°F), reaching a maximum of 38°C (101°F). Precipitation is consistently low in September, recording just 1 mm over 0 days, while June experiences slightly more rainfall at 6 mm over 1 day. Humidity also varies, with September at 26% and June higher at 34%. For more details on June's weather specifics, you can check Mashhad weather in June.

In comparing the weather between September and July, we can see notable differences in temperature and overall climate. September tends to be cooler, with nighttime lows dropping to 5°C (42°F), while the average temperature hovers around a mild 20°C (69°F), peaking at 37°C (98°F). In contrast, July is significantly warmer, featuring a minimum temperature of 14°C (57°F) and an average of 27°C (81°F), reaching up to a scorching 39°C (103°F). Both months experience little precipitation—with only 1 mm recorded and no rain days—but July has a slightly lower humidity at 20%, compared to 26% in September. For more detailed insights, you can refer to Mashhad weather in July.

September weather shows a notable cool-down compared to August, with a minimum temperature of 5°C (42°F) compared to August's warmer minimum of 11°C (53°F). The average temperature in September is 20°C (69°F), significantly lower than August's average of 24°C (76°F), though both months experience high maximum temperatures that approach the upper 30s°C. Precipitation remains the same in both months at just 1 mm, with no rain days recorded, yet September is slightly more comfortable with a higher humidity of 26% compared to August's 19%. For more detailed insights into August's weather, check Mashhad weather in August.

In September, the weather is characterized by warm temperatures ranging from a minimum of 5°C (42°F) to a maximum of 37°C (98°F), with an average of 20°C (69°F). During this month, precipitation is minimal, with no recorded rainy days and a low humidity level of 26%. In contrast, October experiences a notable shift in weather, featuring cooler temperatures with a minimum of -1°C (30°F) and an average of 13°C (55°F), reaching a maximum of 29°C (84°F). Additionally, October brings increased precipitation of 13 mm (0.5 in) over two days and a rise in humidity to 44%. For more detailed insights, check Mashhad weather in October.

September and November present stark contrasts in weather. September typically experiences a wide temperature range, with minimums around 5°C (42°F) and maximums peaking at a scorching 37°C (98°F), accompanied by low humidity at 26% and virtually no rainfall. In sharp contrast, November brings much cooler temperatures, with averages around 6°C (44°F), dipping to a chilly -8°C (18°F) at night. This month also sees increased precipitation with about 25 mm (1.0 in) of rain over five days, along with a rise in humidity to 67%. For more details on November weather, check Mashhad weather in November.

September and December present stark contrasts in weather conditions. In September, temperatures can soar, with averages around 20°C (69°F) and highs reaching up to 37°C (98°F), while the air remains dry with only 1 mm of precipitation over the entire month. Conversely, December brings a notable drop in temperature, where the average is just 3°C (38°F), lows plunge to -12°C (11°F), and the atmosphere becomes much wetter, receiving about 14 mm of precipitation over three days. Additionally, the humidity significantly increases in December to 69%, contrasting with the much drier September, which has only 26% humidity. For more detailed information, check Mashhad weather in December.

Compare Mashhad's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Mashhad

As summer transitions into autumn, September in Mashhad brings a delightful shift in weather patterns. With significantly warmer days peaking at 37°C and cooler nights averaging around 20°C, this month offers an ideal balance for outdoor activities. Notably, rain is almost nonexistent, with zero precipitation days and a mere 1 mm of rain, making it a perfect time for exploring the city's vibrant culture under clear skies. The low humidity level of 26% further enhances the comfortable atmosphere, setting September apart from the more extreme temperatures seen in the height of summer. For a deeper look into what you can expect throughout the year, visit Mashhad Climate.