Tehran in September
In September, Tehran averages 32°C (89°F) during the day and 20°C (68°F) at night, with only about 2 rainy days.
ShoulderConditions are warm and beach-friendly. Skies are generally dry and clear.
September in Tehran is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How September compares to the rest of the year in Tehran
September is in the middle of the year for warmth in Tehran (4th of 12) and one of the driest months (11th of 12). Daytime temperature runs 9°C above the annual average (23°C). September runs 4°C cooler than August (36°C) and cools 8°C in October (24°C).
September sunrise & sunset in Tehran
Times shown for Tehran local time (Asia/Tehran), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Tehran — September
Golden-hour and blue-hour windows for the 15th of September, in Tehran's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Tehran in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Tehran's popularity.
Crowds & pricing — September in Tehran
Tehran is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Tehran
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Tehran in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 9°C / 47°F | -1°C / 30°F | 37 mm | 11 | — |
| February | 11°C / 52°F | 1°C / 33°F | 41 mm | 11 | — |
| March | 17°C / 62°F | 6°C / 42°F | 60 mm | 16 | — |
| April | 23°C / 73°F | 11°C / 51°F | 36 mm | 13 | — |
| May | 30°C / 85°F | 17°C / 62°F | 14 mm | 10 | — |
| June | 36°C / 96°F | 23°C / 73°F | 2 mm | 2 | — |
| July | 37°C / 99°F | 26°C / 78°F | 2 mm | 2 | — |
| August | 36°C / 96°F | 24°C / 75°F | 1 mm | 1 | — |
| September | 32°C / 89°F | 20°C / 68°F | 2 mm | 2 | — |
| October | 24°C / 75°F | 13°C / 56°F | 23 mm | 7 | — |
| November | 15°C / 58°F | 5°C / 42°F | 42 mm | 11 | — |
| December | 10°C / 51°F | 1°C / 34°F | 39 mm | 9 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Tehran in September →
Frequently asked questions
How hot is Tehran in September?
In September, Tehran averages a high of 32°C (89°F) and a low of 20°C (68°F) — generally hot.
Does it rain a lot in Tehran in September?
September is generally dry in Tehran, with about 2 rainy days on average.
Is September a good time to visit Tehran?
September is hot and mostly dry. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Tehran in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Tehran for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.