Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Southampton Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows today’s conditions for Kos, the largest of the Dodecanese islands. Expect warm, settled weather with plenty of sunshine, typical for late spring, though a light northerly breeze can pick up along the east coast near Kardamena.
What will the weather be like in Kos over the next two weeks?
The prevailing pattern for the next 14 days is high pressure over the eastern Aegean. The kos weather forecast 15 day outlook suggests a gradual rise in temperature, with daily highs climbing steadily into the mid-to-late twenties Celsius. Nights remain comfortably mild. The kos weather 30 days trend indicates this settled regime may persist, though brief spells of meltemi wind are possible by late June, bringing gusty conditions across the island’s central plain.
How does Kos weather vary by month?
Kos experiences a classic Mediterranean climate. Summer (June to September) is hot and dry, with July and August averaging 30°C. The kos weather by month data shows spring and autumn are the most pleasant periods for walking and sightseeing, with temperatures between 20°C and 25°C and lower humidity. Winter is mild and wetter, though many days still see sunshine. For extended planning, the kos weather forecast 21 days and kos weather 25 day forecast can help align your trip with the best conditions.
What is the best time of year to visit Kos for good weather?
May, June, and September offer the best balance: warm sunshine, lower humidity, and fewer crowds. July and August are reliably hot but can feel intense during peak heat hours. Spring and autumn also suit walking and exploring the island’s archaeological sites.
Does it rain a lot in Kos during winter?
Winter (December to February) is the wettest season, but rainfall is still modest compared to northern Europe. Expect short, heavy showers followed by bright spells. Many days remain pleasant enough for outdoor activities, especially in November and early March.
Can the wind affect my holiday in Kos?
Yes, the meltemi wind can pick up in July and August, particularly along the coast. It usually strengthens in the afternoon, creating choppy seas and strong gusts on exposed beaches. Inland areas and sheltered bays, like those near Kardamena, are often calmer.
Sources
For more UK and European forecasts, see the UK weather hub or check the 10 day weather forecast UK. For nearby destinations, read our Crete Weather and Malta Weather pages. The kos weather radar can help track any approaching fronts during unsettled spells.