Monthly weather overview

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A quick, year-round overview of monthly and seasonal weather in Istanbul. Use this page to get a feel for which months and seasons match your travel style.

Istanbul weather at a glance

  • Istanbul sits between seas, so **wind around the Bosphorus** can make it feel colder than the temperature suggests.
  • Summer (Jun–Aug) is warm to hot with some humidity; sea breezes can ease comfort on some days.
  • Winter (Dec–Feb) is chilly with frequent rain and wind; **occasional snow** is possible.
  • Spring and autumn are popular for travel, but quick swings (rain + wind) make layering important.
  • With hills, ferries, and lots of walking in historic areas, **waterproof and slip-resistant shoes** can improve comfort.
Mar · Apr · May

Spring (changeable): pleasant days, but wind/rain can flip comfort

Avg low 6–14°C / high 12–23°C · Often 6–10 rain days/month (variable)

  • Warmth builds, but wind and showers can feel chilly.
  • April–May often improve for city walks, with layering still important.
  • For ferry-heavy plans, windproof or water-resistant layers help.

Suggested outfits

  • · Light layers (knit + jacket)
  • · Optional wind/rain shell
  • · Comfortable walking shoes

A note for travelers

In spring, comfort is often decided by wind and rain more than the thermometer.

Jun · Jul · Aug

Summer (warm/hot): hot midday, warm evenings

Avg low 18–22°C / high 27–31°C · Less frequent, with occasional showers

  • Midday sightseeing can feel hot—mix shade and indoor stops.
  • Sea breezes can help on the waterfront.
  • Hydration and breathable fabrics matter on long walking days.

Suggested outfits

  • · Breathable clothing
  • · Optional sunscreen/sunglasses
  • · Optional thin evening layer

A note for travelers

In summer, shifting big walks to late afternoon/evening often improves comfort.

Sep · Oct · Nov

Autumn (comfortable, then wetter): September lingers warm, November cools fast

Avg low 10–18°C / high 16–28°C · Rain increases as the season progresses

  • Sep–Oct often feel great for walking and ferry views.
  • By November, wind and rain can drop perceived comfort quickly.
  • A compact umbrella and water-resistant layer reduce itinerary stress.

Suggested outfits

  • · Light jacket + layers
  • · Optional umbrella/rain shell
  • · Slip-resistant shoes

A note for travelers

Late autumn can feel much cooler once wind + rain show up.

Dec · Jan · Feb

Winter (cold + wind): rain is common, and snow can happen

Avg low 3–7°C / high 8–12°C · Frequent wet days

  • Wind can make it feel much colder than the numbers.
  • Rain adds damp chill—layering and waterproofing help.
  • Occasional snow/ice makes traction and warm socks valuable.

Suggested outfits

  • · Coat + layers
  • · Waterproof shoes/umbrella
  • · Optional scarf/ear warmth

A note for travelers

In winter, blocking wind is often the biggest comfort win.

Want detailed monthly weather?

Pick a month below to see detailed average temperatures, rainfall, outfit ideas, and travel tips.

Explore Istanbul

These pages are connected so you can compare conditions and decide for yourself.

Istanbul monthly weather overview — seasons & best time to visit | CityWeather | CityWeather