September weather forecast
Iran

September in Iran denotes the arrival of the autumn season, with a discernible easing of temperatures across the country's varied climatic regions. In the arid desert regions, such as the Dasht-e Kavir and Dasht-e Lut, daytime temperatures begin to drop, averaging between 35°C (95°F) to 40°C (104°F). Nighttime temperatures also cool down, generally staying around 15°C (59°F).

The cold semi-arid regions, home to cities like Tabriz and Ardabil, start to experience milder temperatures, with averages typically falling between 20°C (68°F) to 30°C (86°F). This marks a noticeable shift from the intense summer heat, signaling the arrival of the autumn season.

In the warm temperate regions, including cities such as Shiraz and Isfahan, September brings daytime temperatures of 30°C (86°F) to 35°C (95°F), and nighttime temperatures tend to fall below 20°C (68°F). This month represents the transition period from the dry, hot summers to the cooler autumn season.

The tropical and subtropical steppe regions, especially those along the southern coastlines near the Persian Gulf and the Gulf of Oman, see temperatures dropping to 35°C (95°F) to 40°C (104°F). While rainfall continues to be sparse, these regions slowly start to move towards their wetter season.

Compared to August, September brings noticeably cooler weather across Iran, indicating the commencement of the autumn season. This cooling trend continues into the subsequent months, ushering in the mild and pleasant conditions characteristic of October and November.

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• Tehran - September »
  The month with the least rainfall is September, when the rain falls for 2.9 days and typically collects 6mm (0.24") of precipitation. In Tehran in September, during 2.9 rainfall days, 6mm (0.24") of precipitation is typically accumulated.
• Mashhad - September »
  On the first day of September in Mashhad, sunrise is at 05:03 and sunset at 17:59. September temperatures in Mashhad vary between a high-temperature of 26.2°C (79.2°F) and a low-temperature of 14.8°C (58.6°F).
• Isfahan - September »
  September is the only month when rain does not fall in Isfahan. On the first day of September in Isfahan, sunrise is at 05:38 and sunset at 18:28.
• Karaj - September »
  On the first day of September in Karaj sunrise is at 05:38 and sunset at 18:33. In September, in Karaj the rain falls for 0.3 days.
• Tabriz - September »
  On the first day of September in Tabriz sunrise is at 05:54 and sunset at 18:54. In September, in Tabriz, the rain falls for 2.7 days.
• Shiraz - September »
  Shiraz experiences a significant downturn from peak daytime temperatures throughout September, with the average low-temperature dipping to a mild 14.1°C (57.4°F). The only month without rainfall in Shiraz, Iran, is September.
• Qom - September »
  In September, on the first day of the month, sunrise is at 05:39 and sunset at 18:32. In September, the meteorological conditions in Qom, Iran, change slightly, with the average high-temperature moving from a torrid 39.4°C (102.9°F) in August to a tropical 34.9°C (94.8°F).
• Ahvaz - September »
  Ahvaz's September weather shows a modest shift in high-temperatures, falling from August's burning hot 47.5°C (117.5°F) to a blisteringly hot 43.5°C (110.3°F). September in Ahvaz witnesses a notable shift in weather as the scorching summer begins to fade away.
• Kermanshah - September »
  On the last day of September, in Kermanshah sunrise is at 06:15 and sunset at 18:07 +0330. In Kermanshah during September, the rain falls for 0.5 days and regularly aggregates up to 1mm (0.04") of precipitation.
• Urmia - September »
  September nights in Urmia showcase a dramatic shift from daytime highs to an average temperature of 11.5°C (52.7°F). In Urmia, during September, the rain falls for 2.1 days and regularly aggregates up to 4mm (0.16") of precipitation.
• Rasht - September »
  September and October, with an average relative humidity of 75%, are most humid months in Rasht, Iran. The months with the highest humidity in Rasht are September and October, with an average relative humidity of 75%.
• Zahedan - September »
  On the first day of September in Zahedan sunrise is at 05:04 and sunset at 17:48. In Zahedan, in September, during 0.3 rainfall days, 0mm (0") of precipitation is typically accumulated.