Tehran · AutumnMonth summary
Tehran weather in September
✅ Good
🌡️ Temperature min / max
70°F – 90°F
🌧 Rainy days
1% of days
☀️ Sunshine
11.1h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.3/10
📅 📅 Best month
May (8.8/10)
Quick decision
Should you visit Tehran in September?
✅ Good
✅ Yes if: you're looking for maximum sunshine — 11.1h per day on average.
❌ No if: you struggle with heat — temperatures regularly exceed 30°F.
Our take: Tehran in September: 90°F and 11.1h of sunshine. Decent, but not the peak.
By trip type
Tehran in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Tehran is often underrated: 32°F, golden light and declining crowds. An interesting window. Rain is virtually absent (1% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if May (8.8/10) remains theoretically better.
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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 32°F | 48°F | 21% | 0.1in | 9.2h | 5.6/10 |
| 🌫️ February | 36°F | 52°F | 26% | 0.1in | 10.0h | 6.2/10 |
| ⛅ March | 43°F | 63°F | 27% | 0.1in | 10.9h | 7.2/10 |
| 🌤️ April | 54°F | 75°F | 22% | 0.1in | 11.6h | 8.3/10 |
| ☀️ May | 63°F | 86°F | 13% | 0.0in | 12.8h | 8.8/10 |
| 🥵 June | 73°F | 97°F | 2% | 0.0in | 13.1h | 6.9/10 |
| 🥵 July | 79°F | 100°F | 2% | 0.0in | 13.0h | 6.9/10 |
| 🥵 August | 77°F | 97°F | 0% | 0.0in | 12.7h | 6.9/10 |
| ☀️ September | 70°F | 90°F | 1% | 0.0in | 11.1h | 8.3/10 |
| ☀️ October | 57°F | 77°F | 9% | 0.0in | 10.8h | 8.7/10 |
| ⛅ November | 45°F | 63°F | 19% | 0.0in | 9.3h | 7.2/10 |
| 🌫️ December | 36°F | 52°F | 18% | 0.0in | 9.0h | 6.4/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Tehran averages 90°F, 1% rainy days and 11.1h of sunshine per day. Overall weather score: 8.3/10.
See methodology →
Comparison
September vs May (best month)
The best month is May (score 8.8/10). Difference:
- 🌡️ Max temperature : -2°F
- 🌧 Rainy days : +12%
- ☀️ Sunshine : +1.7h/day
FAQ
FAQ — Tehran in September
Is September a good time to visit Tehran?
September is an excellent time to visit Tehran (score 8.3/10). With 90°F, 11.1h of sunshine and 1% rain, conditions are very favourable.
Is it too hot in Tehran in September?
Temperatures reach 90°F. It's intense but manageable with sunscreen and water. Sunshine: 11.1h/day.
Accommodation
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Activities & tours
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