Tehran weather in September
September is one of the best months to visit Tehran: highs of 32°C (89°F) and about 16 mm (0.6 in) of rain on average. Nights average 18°C (65°F) and cloud cover 25% (NASA POWER, 2001–2025 averages). It is the 5th driest month of the year and the 4th warmest. Compared with August, it is cooler and wetter; October brings highs of 24°C (76°F) and 36 mm (1.4 in) of rain.
Figures are long-term averages for Tehran, the largest city in Tehran. See below for other places.
Is September a good time to visit Tehran?
best month Weather score 90/100.
Yes. September is one of the best months for weather in Tehran.
Does it rain a lot in Tehran in September?
No, it is usually dry: about 16 mm (0.6 in) falls in an average September. It is the 5th driest month of the year.
How warm is Tehran in September?
Days average 32°C (89°F) and nights 18°C (65°F).
Tehran weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 8°C (47°F) | -2°C (29°F) | 33 mm | 53% | least pleasant |
| February | 11°C (52°F) | 0°C (31°F) | 34 mm | 54% | least pleasant |
| March | 17°C (63°F) | 4°C (40°F) | 35 mm | 57% | fair |
| April | 22°C (72°F) | 9°C (48°F) | 38 mm | 58% | best |
| May | 29°C (85°F) | 15°C (59°F) | 15 mm | 48% | best |
| June | 35°C (96°F) | 20°C (69°F) | 6 mm | 33% | fair |
| July | 38°C (100°F) | 23°C (74°F) | 7 mm | 35% | fair |
| August | 36°C (97°F) | 22°C (72°F) | 8 mm | 27% | fair |
| September | 32°C (89°F) | 18°C (65°F) | 16 mm | 25% | best |
| October | 24°C (76°F) | 12°C (54°F) | 36 mm | 37% | best |
| November | 15°C (59°F) | 4°C (40°F) | 45 mm | 51% | fair |
| December | 10°C (50°F) | 0°C (32°F) | 35 mm | 51% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Tehran in September
Weather can differ a lot within Tehran: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Tehran | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Eslamshahr | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Shahrīār | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Qods | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Qarchak | 28°C (83°F) | 16°C (60°F) | 23 mm | best |
| Golestān | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Pākdasht | 28°C (83°F) | 16°C (60°F) | 23 mm | best |
| Varāmīn | 28°C (83°F) | 16°C (60°F) | 23 mm | best |
| Nasīm Shahr | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Nasimshahr | 32°C (89°F) | 18°C (65°F) | 16 mm | best |
| Fardīs | 21°C (70°F) | 9°C (48°F) | 44 mm | best |
| Shahre Jadide Andisheh | 32°C (89°F) | 18°C (65°F) | 16 mm | best |