Ios weather in August 2026

Q: How hot is it in Ios in August?

Daytime temperatures usually reach 31°C in Ios in August with high heat and humidity, falling to 21°C at night.

Q: How sunny is it in Ios in August?

There are normally 11 hours of bright sunshine each day in Ios in August - that's 84% of daylight hours.

Q: How warm is the sea around Ios in August?

The average sea temperature around Ios in August is 26°C.

Q: Does it ever rain in Ios in August?

There are usually 2 days with some rain in Ios in August and the average monthly rainfall is 6mm.

Expect daytime maximum temperatures of 26°C in Ios, Greece in August based on long-term weather averages. There are 13 hours of sunshine per day on average.

26
26°C max day temperature
13
13 hours of sunshine per day
0
0 days with some rainfall
21
21°C min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
2
2 mm of monthly rainfall
9
9 (Very High) UV index
24
24°C sea temperature

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The August weather guide for Greece (Ios) 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.

Metric (°C / mm) | Imperial (°F / inches)