Mid-autumn · Weather & things to do
Istanbul in October
Istanbul cools off: highs slip to 68°F (20°C), from 77°F in September, with lows of 58°F (14°C) and about 2.8 in (70 mm) of rain.
At 87/100 for comfort (6th of 12), it's one of the best months to visit.
- Avg high
- 68°F (20°C)
- Avg low
- 58°F (14°C)
- Rain
- 2.8 in (70 mm)
- Humidity
- 76%
- Cloud cover
- 59%
- Daylight
- ~10 h 52 min
- Comfort score
- 87/100 · Great
What October feels like
Days are mild at around 68°F (20°C): comfortable for walking all day, with a layer for the evening.
After dark, temperatures fall to about 58°F (14°C).
Some rain is likely, about 2.8 in (70 mm) in the month, so pack for a shower or two.
Plan around October
October is one of Istanbul's best months on the climate data.
- Last of the best-scoring months: by November, the score drops to 75/100.
- The year's biggest cool-down: highs drop 5°C (10°F) from September.
- Comfort slips from 93/100 in September to 87/100.
- October sits inside the Apr – Jun, Sep – Oct window our Istanbul, Cappadocia & Ephesus route recommends.
What to pack for October
- A warm layer for eveningsnights drop to 58°F
- Packable rain jacket or umbrellaabout 2.8 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Istanbul in October
October is good outdoor weather here, so these picks lean toward the open air.
Süleymaniye Mosque
Sinan's hilltop masterpiece with Golden Horn views from the garden.
Why now October scores 87/100 for comfort, good conditions for being outside.
Blue Mosque
Sultan Ahmed Mosque, with six minarets and blue İznik tiles inside.
Karaköy Güllüoğlu
Baklava house run by the same family for generations.
Grand Bazaar
Covered market of about 4,000 shops selling carpets, lamps and jewelry.
Bosphorus Ferry
Public ferry cruise up the strait past palaces and wooden mansions.
Why now Highs near 68°F and 2.8 in of monthly rain make this an easy outdoor pick.
Nearby in October
- Selçuk in October~228 mi · highs 79°F, 2.0 in rain · 7°C (12°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Istanbul in October: quick answers
Is October a good time to visit Istanbul?
Yes. On the climate data it's one of the best months, scoring 87/100. Expect highs of 68°F (20°C) and 2.8 in (70 mm) of rain. October is inside the Apr – Jun, Sep – Oct window our Istanbul, Cappadocia & Ephesus route recommends.
How hot is Istanbul in October?
Average highs are 68°F (20°C) and average lows 58°F (14°C), making it the 6th-warmest month by daytime highs.
Does it rain a lot in Istanbul in October?
Some: about 2.8 in (70 mm) of rain falls across October on average, the 3rd-wettest month of the year. The annual total is about 24.6 in (624 mm).
What should I pack for Istanbul in October?
Bring a warm layer for evenings (nights drop to 58°F), packable rain jacket or umbrella (about 2.8 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Istanbul
Routes in season in October
- Istanbul, Cappadocia & Ephesus Apr – Jun, Sep – Oct
Planning Istanbul in October?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.