The short answer

For most people the best months are May–June and September–October: warm sea, sunny days and smaller crowds than July and August. Istanbul is good year-round but best in spring and autumn. Winter suits city breaks and Cappadocia snow scenes, not beach holidays.

By season

Season Coast (Antalya, Bodrum, Fethiye) Istanbul Cappadocia
Spring (Mar–May) Warm days from April; sea still cool until May Mild; tulips in April Fresh and green; good walking
Summer (Jun–Aug) Hot (often 35°C+), busiest and priciest Hot and humid, crowded Hot days, cool nights
Autumn (Sep–Nov) Sea at its warmest in September; quieter from October Pleasant, clear days Best walking weather
Winter (Dec–Feb) Mild in Antalya; many resort hotels close Cool and wet, occasional snow Cold, often snowy; balloons still fly on calm days

Month by month (approximate averages)

Month Antalya high (°C) Antalya sea (°C) Istanbul high (°C) Cappadocia high (°C) Verdict
Jan 15 17 9 4 City breaks, snowy Cappadocia
Feb 16 17 9 6 City breaks
Mar 18 17 12 11 Sightseeing
Apr 22 18 16 17 Great for Istanbul and walking
May 26 21 21 22 Excellent all round
Jun 31 25 26 26 Beach season begins in earnest
Jul 34 28 28 30 Peak heat and prices
Aug 34 29 29 30 Peak heat and prices
Sep 31 28 25 26 Excellent all round
Oct 26 25 20 19 Warm sea, fewer crowds
Nov 21 22 15 12 Quiet; some resorts winding down
Dec 16 19 11 6 City breaks

Figures are long-term averages and vary year to year.

School holidays tip

UK and Irish school holidays push up prices in late July and August, at Easter and in the October half-term. If you can travel outside these, you’ll pay less and enjoy quieter beaches.

Public holidays to know

Turkey’s religious holidays follow the lunar calendar and move about 11 days earlier each year. During Ramazan Bayramı (Eid al-Fitr) and Kurban Bayramı (Eid al-Adha), Turkish families travel in huge numbers: domestic flights, buses and coastal hotels fill up, and some offices and museums change their hours. Check the dates before you book.