September · Turkey
Best time to visit Istanbul in SeptemberWeather, crowds & prices
September score
9.3/10
Ranked #2 of 12 months
- Avg temp
- 21°C
- Rainfall
- 49 mm
- Humidity
- 71%
- Sunny days
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Istanbul scores 9.3/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 21°C, 49 mm of rain, and roughly 29 sunny days this month.
Bosphorus ferries and storied quarters shine brightest in mild April through June.
Frequently asked
- What is the weather like in Istanbul in September?
- In September, Istanbul averages 21°C, 49 mm of rain, and about 29 sunny days. Its climate-comfort score is 9.3/10.
- Is September a good time to visit Istanbul?
- September earns a 9.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Istanbul in September?
- Expect about 49 mm of rain in September. Average humidity is 71% and there are about 29 sunny days.
Curated in Istanbul
Tickets & experiences
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Istanbul, Turkey. Live activities and tours from GetYourGuide, matched to this destination.