Dalyan weather by month

When to go to Dalyan

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August, September, October. December is the wettest month (202 mm, about 12 rainy days) and August the driest (3 mm). The sea is warmest in August at 27.2°C and coolest in March at 16.7°C.

Getting there

A direct flight from London Gatwick to Dalaman International Airport (DLM, 19 km from Dalyan) takes roughly 4 h 12 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Istanbul.

Records and extremes, 1991-2020

The hottest day recorded in Dalyan between 1991 and 2020 reached 47.2°C on 1 July 2017; the coldest fell to -2.1°C on 6 January 2002. In August one day in ten tops 36.1°C and about 90% of days pass 30°C; in January one night in ten drops to 4.0°C or below. The wettest single month of the period was December 2001 with 475 mm, against a December average of 202 mm.

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

March is better suited to time outdoors on land than swimming: daytime temperatures average 17°C, while nights fall to 9°C. Bring layers rather than relying on warm afternoons lasting into the evening. April reaches 20°C by day, making it a comfortable choice if strong heat puts you off, though the sea stays at 17°C through both months. May feels warmer, with 24°C days, 16°C nights and sea temperatures reaching 20°C. That makes it the strongest spring option for a mix of outdoor time and swimming, provided you do not need warm water. Rain remains possible throughout spring, so keep plans flexible and pack a light waterproof.

Summer: June offers the gentlest heat

June is the summer month to favour if you want warmth without Dalyan's highest temperatures. Days average 29°C, the sea reaches 23°C and there are only 3 rain days on average. July raises the daytime average to 32°C, with 14 hours of sunshine, so shade and a break from activity around midday become more important. August is the hottest month, averaging 33°C by day and 24°C at night; do not expect evenings to feel cool. Its 27°C sea suits travellers who dislike chilly water. July and August both average just 1 rain day, making heat, rather than wet weather, the main planning concern.

Autumn and winter: warm water gives way to wetter days

September keeps a summer feel, with 30°C days, a 26°C sea and just 2 rain days on average. October offers a gentler balance: 25°C afternoons and 24°C water make it a good choice for swimming without peak summer heat, although rain becomes more likely. November still reaches 20°C by day, but 12°C nights call for warmer layers. December turns cooler and wetter, averaging 16°C during the day and 12 rain days. January is the coolest month, with 14°C days and 8°C nights, so pack for mild afternoons rather than reliable warmth. February edges up to 15°C, but its 17°C sea and 11 rain days make it a weaker choice for a swimming-led holiday. Winter suits travellers happy to work around showers and spend evenings in warmer clothing.