October 9 is generally a great time to visit Istanbul. While there is a slight chance of rain (21%), showers are usually brief. Expect comfortable 21°C weather. Istanbul is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Istanbul
Currency
TRY
₺ Turkish lira
Language
Turkish
Driving
Right side
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Safety
Travel Precautions
GPI: 2.785
Istanbul Weather Forecast for October 9
"Mild & Comfortable. Expect average highs of 20.6°C. 21% chance of rain."
What to Wear in Istanbul in October
Based on historical data for October 9, Istanbul typically experiences temperatures between 14.7°C and 20.6°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (21% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Istanbul
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.6°C
Daytime Peak
Average Low
14.7°C
Nighttime Low
Feels Like
20.7°C
☀️ Feels accurate
Rain Chance
21%
Avg 1.3mm if it rains
Cloud Cover
52%
Overcast
Pressure
1017.2 hPa
Medium volatility
Istanbul Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 57 min to burn
Type III-IV
🟡 86 min to burn
Type V-VI
🟢 143 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
16.4°C
Noticeable
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Turkey
Flight Traffic
High
91/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~1,160
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Istanbul
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:09
☀️ Noon
12:52
🌇 Sunset
18:35
⏱️ Daylight
11h 25m
Wind Speed
21.4 km/h
Moderate wind
Sunshine
8.0 hrs
Direct Sun (Cloud-free)
Humidity
77%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Istanbul
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Istanbul
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Istanbul on October 9 averages 20.6°C with a 21% precipitation probability. Wedding/Outdoor Event Score: 97/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Istanbul Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
October 3
21.8°C • 14% rain
Score
100
October 4
21.9°C • 11% rain
Score
100
October 5
21.7°C • 13% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 9) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Istanbul Worth Visiting on October 9?
Planning a trip to Istanbul on October 9? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 20.6°C with a 21% historical precipitation risk.
✈️ Travel Logistics: Approximately 1,160 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for Turkey, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 21.1°C (swimming pool). Wave conditions are generally lake-like with heights around 0.43m.
📊 Historical Extremes: The hottest October 9 recorded in the last 30 years saw temperatures hit 24.4°C in 2024, while the coldest dropped to 9.9°C in 2017.