Kusadasi weather by month

When to go to Kusadasi

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: May, June, July, August, September. December is the wettest month (137 mm, about 11 rainy days) and July the driest (1 mm). The sea is warmest in August at 24.5°C and coolest in March at 15.5°C.

Getting there

A direct flight from London Gatwick to Adnan Menderes International Airport (ADB, 49 km from Kuşadası) takes roughly 4 h - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Istanbul.

Records and extremes, 1991-2020

The hottest day recorded in Kusadasi between 1991 and 2020 reached 43.3°C on 25 July 2007; the coldest fell to -4.7°C on 14 February 2004. In July one day in ten tops 38.5°C and about 94% of days pass 30°C; in January one night in ten drops to 1.2°C or below. The wettest single month of the period was December 2014 with 300 mm, against a December average of 137 mm.

Spring: comfortable days, but the sea takes time to warm

March is still a layers month: daytime averages of 16°C fall to 8°C at night, and showers remain a consideration. April feels warmer at 20°C, making time outdoors more comfortable, though a jacket is useful after sunset. The catch is the sea, which averages 16°C throughout March and April; pleasant air temperatures do not yet mean comfortable swimming. May offers a better balance for travellers who dislike intense heat, with 25°C days, 10 hours of sunshine and just 4 rain days on average. Its 19°C sea may still feel brisk, while evenings at 15°C call for a light extra layer.

Summer into September: choose your level of heat

June brings proper summer heat, with 31°C days and a 22°C sea, while rain is infrequent. It suits a swimming holiday if you are happy to take shade breaks around midday. July and August are hotter, both averaging 35°C by day and 23°C at night, so do not count on evenings feeling cool. Light clothing and accommodation with cooling are sensible priorities. The sea reaches 24°C, but outdoor plans are best kept flexible around the heat. September is the gentler alternative: days average 30°C, the sea holds at 23°C and rain remains uncommon. It is a stronger choice than May if warmer swimming water matters most.

Autumn and winter: lingering warmth, then wetter days

October keeps enough warmth for a late-season holiday, with 24°C days and a 21°C sea, though 5 rain days on average mean some flexibility helps. November drops to 18°C by day and 11°C at night; pack layers rather than expecting summer clothing to cover every outing. December and February both average 14°C during the day, while January is cooler at 12°C. Nights are chilly, reaching 5°C in January, so a warm jacket matters. December and January each average 11 rain days, making waterproofs more useful than a swimming-focused packing list. Winter suits travellers content with mild spells outdoors and indoor time when rain arrives, rather than those relying on long, warm days beside the sea.