SeasonScore
Tehran, Iran
Photo: Sasan Geranmehr · CC BY 3.0

Iran

Tehran in September

🍂 Autumn

Warm and mostly dry. Watch for hazy air.

🎒 Pack: light, breathable clothes & sunscreen · N95 mask for hazy days · sunglasses & hat

Best months: May (8.5), Jun (8.2), Apr (8.1)

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Why September scores 8.1What goes into the score

How it works
🌡️ 30° / 20°C🌧️ 2 mm💧 dew pt 4°🍃 PM2.5 36
  • Weather comfort9.6
    • ✓Warm (30°C highs / 20°C lows)
    • ✓Comfortable humidity (dew point 3.7°C)
    • ✓Mostly dry (~2 mm rain)
  • Air quality5.5
    • !Elevated (PM2.5 ~36 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline2.0
    • ·Very high caution
Compare monthsPut September side by side with another month
SepMay
Score8.1 Very good8.5 Excellent
Season🍂 Autumn🌷 Spring
High / low30° / 20°27° / 17°
Rain2 mm17 mm
Humiditydew pt 4°dew pt 6°
PM2.536 µg/m³28 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Tehran weather-station normals. Rainfall: Tehran Geophysic weather-station normals (national met service).

Holidays & crowdsSeptember 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

No national public holidays in Iran this month.

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Tehran

  • Snowy daysTypical dates
    Snow likely Dec–Mar (most in Jan: ~5 days)

    Average number of days with snowfall at Tehran.

    Source: Tehran weather-station normals (national weather service, via Wikipedia climate table)

Explore TehranEvents, sights, food & souvenirs

Check event dates locally

Iran's sprawling capital at the foot of the Alborz mountains, home to the country's main museums, royal palaces and a huge historic bazaar.

Events in September

No major events on our calendar for September.

Coming up later

Yalda NightDate variesNight of the winter solstice, around 20–21 December

Families stay up on the longest night eating pomegranates and watermelon and reading Hafez.

Why go: Shops sell pomegranates and decorations, but it is mostly a family celebration.

Where: Homes and restaurants

Nowruz (Persian New Year)Date variesBegins at the spring equinox, usually 20 or 21 March, with about two weeks of holidays

The Persian New Year, Iran's biggest holiday.

Why go: Many Tehranis leave the city, offices close, and domestic travel to other cities is very busy.

Where: Across the country

Chaharshanbe SuriDate variesThe last Tuesday evening before Nowruz

A fire festival where people jump over bonfires.

Why go: Expect fireworks and firecrackers in the streets that evening.

Where: Neighbourhood streets