Best time to visit Istanbul in September
Yes — September is one of the best months to visit Istanbul (rank 3 of 12, score 90/100).
★ Best time to visit Istanbul September climate details September travel guide
Is September the best time to visit Istanbul?
Out of 12 months ranked by travel comfort, September places #3 with a score of 90/100. That makes it one of the top 3 months — recommended.
Why this score — the breakdown
| Factor | Score | Reading |
|---|---|---|
| Temperature comfort | 100/100 | 25.9°C high is above the ideal 16–25°C comfort band (heat is penalised harder) |
| Rain | 71.2/100 | moderate rainfall (47 mm over ~14 rainy days) |
| Sunshine | 100/100 | very sunny (11 h/day) |
Overall score blends temperature (45%), rainfall (35%), and sunshine (20%). High 25.9°C / low 18°C, 47 mm rain, 11 h sun/day (2020–2024 data).
Best time to visit Istanbul in other months
January February March April May June July August September October November December