Iran weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Iran in September. Check more long-term weather averages for Iran in September before you book your next holiday to Iran in 2025/2026.

  • 30°C maximum daytime temperature in September in Iran (Tehran)30
    30°C max day temperature
  • 10 hours of sunshine per day
  • 2 days with some rainfall in September in Iran (Tehran)2
    2 days with some rainfall
  • 17°C minimum night-time temperature in September in Iran (Tehran)17
    17°C min night temperature
  • 12 hours of daylight per day in September in Iran (Tehran)12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Iran (Tehran)M
    Moderate heat & humidity
  • 3 mm monthly rainfall in September in Iran (Tehran)3
    3 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Iran (Tehran)9
    9 (Very High) UV index

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The September weather guide for Iran (Tehran) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Iran destinations

Below are average maximum temperatures at popular countries, regions and places in Iran in September. Select a holiday destination to see more weather parameters.

All Iran destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Iran in September?

Daytime temperatures usually reach 30°C in Tehran, Iran in September with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Iran in September?

There are normally 10 hours of bright sunshine each day in Tehran, Iran in September - that's 80% of daylight hours.

Does it ever rain in Iran in September?

There are usually 2 days with some rain in Tehran, Iran in September and the average monthly rainfall is 3mm.

Iran September sunrise & sunset times

Browse the sunrise and sunset times for Iran in September 2025. Select a month to view Iran sunrise and sunset times for the next 12 months. The Iran sunrise and sunset times shown below are for Tehran.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:36 18:32
Monday, 15th September 2025 05:47 18:11
Tuesday, 30th September 2025 05:58 17:50

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