Search flights, hotels & activities for Kos
Compare flights, hotels, cars, and activities in one place.
500+airlines & travel sites compared
21,000+routes tracked
€0booking fees from us
Freeprice drop alerts
Things to Do in Kos in September
Real historical weather for Kos in September: average highs of 28°C and lows of 23°C, with around 10mm of rain (averaged over the last 3 years). Kos is in Greece.
28°C
Average high
23°C
Average low
10mm
Typical rainfall
Real things to do in Kos in September
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
90 Minutes Glass Bottom Boat with Mermaid Show
★ 5.0(2 reviews)· 1h 30m
From €27
Kos - Airport Private Transfer
★ 4.9(191 reviews)· 30 min
From €55
Kos: Small-Group Full-Day Catamaran Boat Trip, Meal, Drinks &Swim
★ 4.9(84 reviews)· 7 hrs
From €175
Kos: Small Group Full-Day Sailing Boat Trip, Meals, Drinks & Swim
★ 4.9(93 reviews)· 7 hrs
From €145
Full Day 3-Island Boat Cruise from Port of Kos
★ 4.8(1,173 reviews)· 7h 15m
From €30
Full Day Boat Cruise to 3 Islands with optional pickup
★ 4.5(618 reviews)· 8 hrs
From €30
Kos Scavenger Hunt & Highlights Self-Guided Walking Tour
★ 4.2(21 reviews)· 2 hrs
From €8
Sunset in Zia
★ 4.2(307 reviews)· 4 hrs
From €21
Bodrum Roundtrip Ferry to Kos with Hotel Pickup
★ 3.9(38 reviews)· 9 hrs
From €25
From Kos: Independent Day Trip to Bodrum
★ 3.7(158 reviews)· 8 hrs
From €39
Real listings from Viator, including live ratings and prices — clicking through takes you to book directly.
Plan the rest of your trip
Continue planning your trip to Kos
Same destination, real availability — no need to search again.
FAQs — Kos in September
Based on real historical data (averaged over the last 3 years), expect highs around 28°C and lows around 23°C, with roughly 10mm of rain.