Dalaman weather by month

When to go to Dalaman

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August, September, October. January is the wettest month (168 mm, about 11 rainy days) and July the driest (4 mm). The sea is warmest in August at 27.5°C and coolest in March at 16.7°C.

Getting there

A direct flight from London Gatwick to Dalaman International Airport (DLM, 6 km from Dalaman) 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 Dalaman between 1991 and 2020 reached 42.2°C on 1 July 2017; the coldest fell to -3.2°C on 8 January 2015. In August one day in ten tops 36.1°C and about 94% of days pass 30°C; in January one night in ten drops to 3.4°C or below. The wettest single month of the period was December 2001 with 407 mm, against a December average of 153 mm.

Winter and spring: layers first, swimming later

December, January and February suit travellers who prefer cool weather to heat, rather than those planning a beach holiday. December averages 15°C by day; January and February sit at 14°C, with nights at 7°C. Bring a jacket and waterproofs, as rain is a regular consideration. March lifts daytime temperatures to 17°C, then April reaches 20°C, making outdoor time more comfortable without summer heat. The catch is the sea: it stays at 17°C through spring until May, so warm air does not immediately mean comfortable swimming. May offers a clearer shift towards summer, with days at 24°C and sea temperatures of 20°C. Even then, an evening layer is useful as nights average 15°C.

Summer: reliable heat, but plan around midday

June is the more manageable summer choice, with daytime averages of 30°C, nights at 20°C and a sea temperature of 23°C. It suits a holiday built around swimming, with outdoor activity better kept away from midday. July and August both average 33°C by day, so shade and breaks from the heat matter more than packing extra activities into the afternoon. Nights stay warm too, reaching 24°C in August; breathable clothing is useful well after sunset. Rain is unlikely to interrupt many plans, with July and August each averaging 1 rainy day. For the warmest water, August leads at 28°C, though that comes with the strongest heat.

Autumn: warm seas outlast the strongest heat

September keeps much of summer's warmth without the highest daytime temperatures: days average 30°C and the sea stays at 26°C. With 2 rainy days on average, it is a strong choice for swimming and spending time outdoors, although midday can still feel hot. October offers a gentler balance at 25°C by day, with the sea at 24°C, making it particularly appealing if midsummer feels too demanding. Pack an evening layer and allow for occasional wet weather. November is a more mixed proposition: daytime temperatures fall to 20°C and nights to 12°C. The sea retains warmth at 22°C, but cooler air and more rain make a swimming-focused holiday less dependable.