Weather in Kos in August
In Kos, August brings high-summer weather that is hot and almost completely dry. Daytime highs average around 30°C / 87°F, and nights drop to about 25°C / 77°F. Even after dark it stays warm, so a room with air-conditioning makes a difference. You're very unlikely to see any rain. Sea temperatures average around 25°C / 77°F, warm enough for long swims. The meltemi, the northerly wind of the Aegean, blows on many days and takes the edge off the heat, though it can also whip up dust and rough seas. Kos is long and fairly flat, with sandy beaches along its coasts and a mountain ridge running along the south of the island. Daylight lasts about 13½ hours, leaving long, light evenings. Pack light, breathable clothes, a sun hat, high-factor sunscreen and sunglasses. When the wind picks up, a light windproof layer is handy for evenings by the water. Get out early and late, and save the hottest hours of the afternoon for the water.
Swimming in Kos in August
The sea in Kos averages around 25°C / 77°F in August, warm enough to stay in for as long as you like. The water is at its warmest of the year now, after warming steadily through July. Good spots include Paradise Beach and Tigaki. The summer wind can churn up exposed beaches, so check which way it's blowing before you pick one. Beaches are at their busiest now, so go early or late in the day. You won't need a wetsuit.
Crowds & Prices in Kos in August
August brings peak crowds to Kos. Accommodation is at its most expensive, and the best rooms go early. Around 15 August, when Greek families travel, ferries and rooms sell out. Weekdays are calmer than weekends at the most popular spots. Staying slightly outside the main town usually means better value and more space. Early mornings and late afternoons are the quietest times at popular sights. Book accommodation and ferries months ahead.
What's Open in Kos in August
Ferries to Kos from Piraeus run at full summer frequency in August, but they sell out, so book ahead. The airport has direct flights from across Europe in the season, as well as flights from Athens. It's the full season, so hotels, restaurants, beach bars and excursions are all running. Museums and sites are open on extended summer hours. Shops in tourist areas often stay open into the evening.
Festivals & Holidays in Kos in August
15 August, the Dormition of the Virgin Mary, is the biggest summer holiday, with church services and village festivals everywhere. Many Greeks return to their home villages in August, and panigyria, village feasts with live music and dancing, run late into the night. In Kos, these occasions are celebrated much as they are across the rest of Greece. Summer evenings are the time for festivals, open-air cinemas and late dinners outdoors.
Is August a Good Time to Visit Kos?
Yes, August is worth it for sun, swimming and a lively summer buzz in Kos. Expect highs of around 30°C / 87°F, lows near 25°C / 77°F and almost no rain. The trade-off is crowds and peak prices, so book early and plan around the busiest spots. If you'd rather have the same warm sea with more space, June, September, October or November would be a better choice.
Frequently Asked Questions
What time does the sun set in Kos in August?
Through August, sunset in Kos moves from around 8:20 pm to around 7:45 pm in Greek local time, as the evenings get shorter. In mid-August, expect it at around 8:05 pm. The long evenings leave plenty of daylight after the heat of the day.
Is it windy in Kos in August?
Often, yes. August is the height of the meltemi, a strong, dry northerly wind that blows across the Aegean on many summer days, sometimes for several days in a row. It keeps the heat bearable, but it can make exposed beaches rough and delay fast ferries and small boats. South-facing beaches are usually more sheltered.
Can I visit Kos Town in August?
Yes. Kos Town is at its liveliest in August, but also at its busiest. Explore in the morning or after sunset, when it's cooler and the atmosphere is at its best. The ancient agora and the Castle of the Knights sit right in the center.
Do I need a car on Kos in August?
Not necessarily. Buses link Kos Town with the main beaches and villages in August, and taxis are available, though they're busy. A car, scooter or ATV gives you more freedom to explore quieter corners, so book one early.
Is August or September better for visiting Kos?
September, for most travelers. The sea is still warm, the crowds thin out after the first week or two and prices drop, while most businesses stay open. August is the choice only if you want the island at its busiest and liveliest.
Kos Weather by Month
