Kos · September
Best travel monthTravel seasonGreece · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MAXMAX | 15° | 15° | 17° | 20° | 25° | 29° | 32° | 32° | 29° | 24° | 20° | 16° |
MINMIN | 9° | 10° | 11° | 14° | 17° | 21° | 23° | 24° | 21° | 18° | 14° | 11° |
☀️Sunshine | 6h | 8h | 9h | 11h | 12h | 13h | 13h | 12h | 11h | 9h | 7h | 6h |
🌊Water Temp | 18° | 17° | 17° | 18° | 20° | 23° | 24° | 26° | 25° | 24° | 22° | 20° |
🌧Rain Days | 5d49mm | 3d38mm | 3d34mm | 1d5mm | 1d13mm | 0d1mm | 0d0mm | 0d0mm | 0d6mm | 1d12mm | 2d25mm | 4d47mm |
Best travel time current monthMonthly averages 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
September is among the best months in Kos: only 0 rain days, 28°C highs, and good sunshine make for ideal holiday conditions.
Daytime temperatures reach up to 28°C, cooling to 21°C at night (daily average: 24°C). With 10 sunshine hours per day, September is one of the sunniest months — 6 mm of rain over 0 days. Sea temperature is 25°C — pleasantly warm for long swim sessions.
Pack light summer clothing, sunscreen, and swimwear — beach and water conditions in September are ideal.
Packing list for Kos in September
- Leichte Sommersachen
- Badezeug und Strandtuch
- Sonnencreme LSF 50
- Sonnenbrille
- Sonnenhut
- Reiseapotheke
Frequently Asked Questions
- Is September a good time to visit Kos?
- Yes — September is one of the best months to visit Kos (Climate Score: 92/100). Pleasant temperatures (28°C), good sunshine (10 h/day), and few rain days (0) make it one of the most recommended months.
- How warm is it in Kos in September?
- In September, Kos sees daily highs of 28°C. Nights cool to 21°C, with a daily average of 24°C.
- How much rain falls in Kos in September?
- In September, Kos receives an average of 6 mm of rain over 0 rain days. That is comparatively dry.
- How many sunshine hours does Kos get in September?
- Kos averages 10 sunshine hours per day in September — above the annual average.
- How warm is the water in Kos in September?
- Water temperature in Kos in September averages 25°C — pleasantly warm for swim sessions.
