August · Greece
Best time to visit Alonnisos in August Weather, crowds & prices
Weather in Alonnisos in August
Average temperature 26°C, 15 mm of rain, about 31 days with 6+ hours of sunshine and 62% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
10.0/10
Ranked #3 of 12 months
- Avg temp
- 26°C
- Rainfall
- 15 mm
- Humidity
- 62%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Alonnisos scores 10.0/10 for beach and coastal travel - one of the top 12-month picks (#3). Expect around 26°C, 15 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Alonnisos is a Sporades island with a hilltop old village, pine-covered coast and a marine park for monk seals.
August in Alonnisos — one of the year's strongest windows (3rd)
August averages 26°C (79°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rain is a non-issue at 15 mm for the month, with about 31 days with 6+ hours of sunshine and 13.7 hours of daylight to work with.
A 10/10 puts this among the year's best months in Alonnisos (3rd of 12); only June scores higher, at 10/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Plan for peak pricing, with 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 Alonnisos in August?
- In August, Alonnisos averages 26°C, 15 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 10.0/10.
- Is August a good time to visit Alonnisos?
- August earns a 10.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Alonnisos in August?
- Expect about 15 mm of rain in August. Average humidity is 62% and there are about 31 days with 6+ hours of sunshine.
Curated in Alonnisos
Tickets & experiences
Things to do in Alonnisos
Alonnisos, Greece. Live activities and tours from GetYourGuide, matched to this destination.