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The weather in Tehran in September is hot. The average temperatures are between 22°C and 32°C.
There shouldn't be any rainy days in in Tehran during September. Having said that, the days are very hot in September so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Tehran in September 2025.
If you’re planning to visit Tehran in the near future, we highly recommend that you review the 14 day weather forecast for Tehran before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 1° | 3 | 26 | 2 | 36 mm | Bad | Tehran in January |
| February | 10° / 3° | 3 | 24 | 2 | 42 mm | Bad | Tehran in February |
| March | 16° / 7° | 3 | 27 | 0 | 48 mm | Good | Tehran in March |
| April | 22° / 13° | 3 | 27 | 0 | 43 mm | Good | Tehran in April |
| May | 28° / 20° | 1 | 30 | 0 | 39 mm | Perfect | Tehran in May |
| June | 35° / 25° | 0 | 30 | 0 | 12 mm | Ok | Tehran in June |
| July | 38° / 28° | 0 | 31 | 0 | 5 mm | Bad | Tehran in July |
| August | 37° / 26° | 0 | 31 | 0 | 4 mm | Ok | Tehran in August |
| September | 32° / 22° | 0 | 30 | 0 | 3 mm | Good | Tehran in September |
| October | 24° / 15° | 1 | 30 | 0 | 25 mm | Perfect | Tehran in October |
| November | 14° / 7° | 3 | 27 | 0 | 51 mm | Good | Tehran in November |
| December | 10° / 3° | 1 | 29 | 0 | 31 mm | Ok | Tehran in December |