Travel time: Year-round
Kas is defined by a classic Mediterranean climate (Köppen Csa), characterized by starkly contrasting seasons: long, arid, and hot summers followed by mild but wet winters. With nearly 3,000 hours of sunshine annually, the town is one of the sunniest spots on the Turkish Riviera. Rainfall is almost non-existent from June through August, while the winter months (specifically December and January) can experience intense, short-lived storms that dump significant precipitation in a matter of hours.
Spring is a period of rapid transition. March begins with daytime highs around 16°C (61°F) and potentially chilly nights. By May, the landscape is incredibly lush and green from winter rains, and daytime temperatures climb to a pleasant 23°C–25°C (73°F–77°F). This is the "bloom" season when wildflowers carpet the Lycian Way.
This is the season of relentless sun. Daytime temperatures frequently hover between 30°C and 35°C (86°F–95°F), and the UV index often reaches extreme levels (10-11). The sea temperature warms significantly, peaking at 28°C (82°F) in August, making the water feel like a warm bath.
Many locals consider September the "golden month." The searing heat of August fades to a soft 28°C (82°F), but the sea retains its summer warmth. Rainfall remains low until late October. By November, the air cools to 20°C (68°F), and the first significant autumn rains begin to revive the parched hillsides.
Winters are mild but erratic. While daytime temperatures average 14°C–16°C (57°F–61°F), this is the wettest time of year. Rainfall often comes in the form of powerful thunderstorms. Frost is exceptionally rare at sea level, but the surrounding peaks of the Taurus Mountains will frequently be capped with snow.
The topography of the Teke Peninsula creates distinct microclimates. The town of Kas sits at sea level and is relatively sheltered, but as you move inland toward the Yayla (highlands) or climb the nearby Phellos ridge, temperatures can drop by 5°C–10°C. Locals often retreat to these higher altitudes in the summer to escape the coastal humidity.
Locals live by the rhythm of the sun and the sea. In the summer, the town follows an informal "siesta" pattern; shops may feel quieter in the mid-afternoon, and social life peaks after sunset when the air cools. Because winter homes are built more for summer ventilation than winter insulation, locals rely on wood-burning stoves (soba) or air conditioning units for heat during the damp winter months.