Climate · sea temperature · delays

Dalaman Weather and Flight Conditions

What to expect month by month on the Turquoise Coast, and how weather at the airport translates into delays.

Live conditions are on the main weather page. For current airport observations and a delay outlook based on aviation weather, open flight conditions and forecast. This page covers the seasonal picture.

Dalaman Climate by Month

⚠ For information only; compiled from internet sources, accuracy not guaranteed. Check the official source.

Dalaman Climate by Month
Month	Max / min (°C)	Sea (°C)	Rainfall (mm)
January	15 / 6	17	190
February	16 / 6	16	145
March	19 / 8	17	95
April	23 / 11	18	60
May	28 / 15	21	35
June	33 / 19	25	10
July	36 / 22	27	3
August	36 / 22	28	4
September	32 / 18	27	15
October	27 / 14	24	70
November	21 / 10	21	135
December	16 / 7	19	210

Dalaman Weather Month by Month

Each month has its own guide: what a typical day looks like, whether the sea is warm enough, what to pack and which flights run.

January

15 °C by day · sea 17 °C · 190 mm rain

February

16 °C by day · sea 16 °C · 145 mm rain

March

19 °C by day · sea 17 °C · 95 mm rain

April

23 °C by day · sea 18 °C · 60 mm rain

May

28 °C by day · sea 21 °C · 35 mm rain

June

33 °C by day · sea 25 °C · 10 mm rain

July

36 °C by day · sea 27 °C · 3 mm rain

August

36 °C by day · sea 28 °C · 4 mm rain

September

32 °C by day · sea 27 °C · 15 mm rain

October

27 °C by day · sea 24 °C · 70 mm rain

November

21 °C by day · sea 21 °C · 135 mm rain

December

16 °C by day · sea 19 °C · 210 mm rain

When to Visit

Dalaman has a Mediterranean climate: hot dry summers and mild wet winters. May, June, September and early October are the sweet spot — warm enough for the sea, comfortable enough to walk around ancient sites and hike stretches of the Lycian Way.

July and August regularly exceed 35 °C inland, and Dalaman valley traps heat. The sea is at its warmest (27–28 °C), but midday sightseeing is hard work and the resorts are at their busiest.

November to March is genuinely wet — Dalaman receives more winter rainfall than most of the Turkish coast — and almost all UK flights stop. The landscape is green and prices are low, but many resort businesses close.

How Weather Affects Flights at Dalaman

Contrary to a common assumption, ordinary summer heat and strong wind rarely cause delays at Dalaman. The two conditions that genuinely affect operations are low visibility and a low cloud base, which force instrument approaches and increase spacing between aircraft, and thunderstorms, which can close the airspace briefly and cause aircraft to hold or divert.

Strong crosswinds matter when they exceed an aircraft type’s demonstrated limit — for the Boeing 737 and Airbus A320 families that operate almost all Dalaman traffic, that is a high threshold and rarely reached here. A tailwind on one runway direction is not a delay cause at all: the airport simply operates in the opposite direction.

Our flight conditions page reads the airport’s official meteorological observations and forecast and translates them into a plain-language delay outlook — without showing you raw METAR and TAF code.

Dalaman Weather — Frequently Asked Questions

What is the best month to visit Dalaman?

May, June, September and early October offer warm sea temperatures with more comfortable air temperatures than the July–August peak.

How hot does Dalaman get in summer?

Daytime highs regularly reach 35–36 °C in July and August, with the Dalaman valley holding heat into the evening.

Is Dalaman wet in winter?

Yes. December and January are the wettest months, each averaging around 190–210 mm of rain — considerably more than the summer months.

Does weather often delay flights at Dalaman?

Rarely. Low visibility, a low cloud base and thunderstorms are the conditions that matter; heat and moderate wind generally are not.

When is the sea warm enough to swim?

From late May (around 21 °C) through to late October (around 24 °C), peaking at 27–28 °C in August.