WanderWhen

Tehran weather in September

September is a fair shoulder-season month in Tehran — decent conditions with some trade-offs. Expect highs around 33°C, lows near 21°C, and about 0.5 days with rain.

6.8 · Fairtravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
33°C
Avg low
21°C
Rainfall
3 mm
Rain days
0.5
Sunshine
11.3 h/day
Daylight
12.2 h

What to pack for Tehran in September

  • light, breathable clothing
  • sun protection (hat, SPF 50)

Humidity averages 22%; max daily wind around 14 km/h.

How September compares

January: 4.9/10 JFebruary: 6.4/10 FMarch: 8.9/10 MApril: 10.0/10 AMay: 8.7/10 MJune: 4.1/10 JJuly: 2.6/10 JAugust: 3.9/10 ASeptember: 6.8/10 SOctober: 10.0/10 ONovember: 8.8/10 NDecember: 6.1/10 D

Best months in Tehran: April & October. See the full best time to visit Tehran guide.

Tehran in September: the details

In September, Tehran sees average daytime highs of 33°C (91°F) and overnight lows of 21°C (69°F). Rainfall totals roughly 3 mm across 0.5 rainy days, and the sun shines about 11.3 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 22%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Tehran, Iran (35.69, 51.42) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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