August · Greece
Best time to visit Syros in August Weather, crowds & prices
Weather in Syros in August
Average temperature 26°C, 9 mm of rain, about 31 days with 6+ hours of sunshine and 74% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
7.8/10
Ranked #8 of 12 months
- Avg temp
- 26°C
- Rainfall
- 9 mm
- Humidity
- 74%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
August in Syros scores 7.8/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 26°C, 9 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Syros is a Cycladic island whose capital, Ermoupoli, is a marble-built neoclassical port city of arcades.
August holds up well in Syros — 8th best month
Days in August average 26°C (79°F) and humidity near 74% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
At just 9 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.
That is 7.8/10 on the same scale — 8th of 12 months, versus 9.6/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, April is materially better in Syros — 1.8 points higher on the same scale.
Frequently asked
- What is the weather like in Syros in August?
- In August, Syros averages 26°C, 9 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 7.8/10.
- Is August a good time to visit Syros?
- August earns a 7.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Syros in August?
- Expect about 9 mm of rain in August. Average humidity is 74% and there are about 31 days with 6+ hours of sunshine.
Curated in Syros
Tickets & experiences
Things to do in Syros
Syros, Greece. Live activities and tours from GetYourGuide, matched to this destination.