High Season (Jun–Aug)
- Prices and temperatures highest
- Expect crowds, book ahead
- Turkish school holidays mid-June to mid-September
- İstanbul’s high season April–May and September–October
- Christmas–New Year and Easter also busy
Shoulder Season (May & Sep)
- Fewer crowds, apart from around Kurban Bayramı holiday (currently in September)
- Warm, spring and autumn temperatures, especially in the southwest
- İstanbul’s shoulder season is June–August
Low Season (Oct–Apr)
- October is autumn; spring starts in April
- Accommodations in tourist areas close or offer discounts
- High season in ski resorts
- İstanbul’s low season is November to March