Kos weather in August 2025

Expect 90°F daytime maximum temperatures in the shade with on average 13 hours of sunshine per day in Kos in August. Check more long-term weather averages for Kos in August before you book your next holiday to Kos in 2025/2026.

90
90°F max day temperature
13
13 hours of sunshine per day
6
6 days with some rainfall
70
70°F min night temperature
14
14 hours of daylight per day
H
High heat & humidity
0.2
0.2 inches of monthly rainfall
9
9 (Very High) UV index
77
77°F sea temperature

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Destination

The August weather guide for Kos (Kos Town) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Kos destinations

Below are average maximum temperatures at popular countries, regions and places in Kos in August. Select a holiday destination to see more weather parameters.

All Kos destinations

Metric (°C) | Imperial (°F)

More about Greece

How hot is it in Kos in August?

Daytime temperatures usually reach 90°F in Kos Town, Kos in August with high heat and humidity, falling to 70°F at night.

How sunny is it in Kos in August?

There are normally 13 hours of bright sunshine each day in Kos Town, Kos in August - that's 96% of daylight hours.

How warm is the sea around Kos in August?

The average sea temperature around Kos Town, Kos in August is 77°F.

Does it rain in Kos in August?

There are usually 6 days with some rain in Kos Town, Kos in August and the average monthly rainfall is 0.2 inches.

Kos August sunrise & sunset times

Browse the sunrise and sunset times for Kos in August 2025. Select a month to view Kos sunrise and sunset times for the next 12 months. The Kos sunrise and sunset times shown below are for Kos Town.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Friday, 1st August 2025	05:16	19:18
Saturday, 16th August 2025	05:29	19:01
Sunday, 31st August 2025	05:41	18:41

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Kos - quick facts
Flight time^✝	4 hours
Time difference	UK +2 hours
Language(s)	Greek
Currency	Euro
Electricity	C + F plug (230V)
Driving side	Right
Why visit?	Beaches Culture Nature Nightlife
Tourist info	Kos Tourist Board