August · Greece
Best time to visit Ios in August Weather, crowds & prices
Weather in Ios in August
Average temperature 26°C, 6 mm of rain, about 31 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
9.8/10
Ranked #3 of 12 months
- Avg temp
- 26°C
- Rainfall
- 6 mm
- Humidity
- 76%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Ios scores 9.8/10 for beach and coastal travel - one of the top 12-month picks (#3). Expect around 26°C, 6 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Ios mixes a hilltop Cycladic town, sandy Mylopotas beach and a famously busy summer nightlife scene.
August ranks 3rd of 12 for Ios — one of the best windows
Days in August average 26°C (79°F) and humidity near 76% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
At just 6 mm for the month, rain will not shape your plans; you get about 31 days with 6+ hours of sunshine and 13.4 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for Ios at 9.8/10 (3rd of 12), just behind June at 9.8/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Ios in August?
- In August, Ios averages 26°C, 6 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.8/10.
- Is August a good time to visit Ios?
- August earns a 9.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ios in August?
- Expect about 6 mm of rain in August. Average humidity is 76% and there are about 31 days with 6+ hours of sunshine.
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