Tehran weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: April – May, October
What is the weather like in Tehran in September?
In September, Tehran is hot: daytime highs average 30 °C, and nights cool down to about 19 °C. With around 10 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 17 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Tehran.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 52 | 80 | 97 |
| Day | 35° | 30° | 23° |
| Night | 23° | 19° | 13° |
| Sun | 11 h | 10 h | 8 h |
| Rain days | 0 | 0 | 3 |
More details for September
- Daylight
- 12 h 27 min05:46 – 18:13
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 6 %on averageAll months
- Hot days
- 17 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+3:30Asia/Tehran
How the score comes together
- Temperatureweight 50 %60 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Tehran in September: quick answers
Is Tehran hot in September?
Yes. In September, Tehran is hot: daytime highs average 30 °C and nights stay around 19 °C. On about 17 days the thermometer climbs to 30 °C or more.
Does it rain much in Tehran in September?
It hardly ever rains.
Tehran month by month
The whole year in TehranAll destinations: IranWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences