The month in detail
What to expect in August
In the height of summer, Kos sees high temperatures (30°C). Heat is a factor for outdoor activities. Rain is virtually absent (1% of days) — ideal for planning without a backup. Not the best window, but acceptable if dates are constrained. June (9.4/10) is significantly better if possible.
August ranks 10 out of 12 months in Kos. Compared to July: −0.6h of sun per day.
This month's conditions
What it's like in August
UV index
8 · high
sunscreen and hat advised
Feels like
muggy at times
21°
Sea
26°C
pleasant for swimming
Daylight
13.4h of daylight
Air quality
fair
AQI 46
Compare
Is August the right month?
The best month in Kos is June (9.4/10), 2.9 pts higher than August.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Kos
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Kos
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Greece
🗣️LanguageGreek
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJuly · 30°C
❄️Coolest monthJanuary · 15°C
🌧️Rainiest month ⓘJanuary · 29%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in August
If August doesn't convince you for this destination, compare with others.
Location
Where is Kos ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
GreeceTemperate oceanic climate with a 9.4 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.
36.89°N · 27.09°E
Questions
Frequently asked questions
What is the best time to visit Kos?
June is the best month with 27.0°C highs, 22.0°C lows, 10.0h of sunshine and 4.0% rainy days. The months of June & September offer comparable conditions.
How many hours of sunshine does Kos get in June?
Kos averages 10.0 sunshine hours per day in June. It is the sunniest month with a climate score of 9.2/10.
What is the rainiest month in Kos?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Kos in June?
In June, overnight lows reach 22.0°C, while afternoon highs average 27.0°C.
Is Kos good in winter?
In winter (December-February), Kos scores 5.2/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 9.2/10.
When should you avoid Kos?
January is the most difficult month to visit Kos, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Kos in August?
In August, the sea averages 26°C in Kos: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Kos in August?
The average UV index reaches 8 in August in Kos (high), with about 13.4h of daylight. Sunscreen and hat advised.