August · Greece
Best time to visit Kefalonia in August Weather, crowds & prices
Weather in Kefalonia in August
Average temperature 28°C, 24 mm of rain, about 31 days with 6+ hours of sunshine and 67% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
10.0/10
Ranked #1 of 12 months
- Avg temp
- 28°C
- Rainfall
- 24 mm
- Humidity
- 67%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Kefalonia scores 10.0/10 for beach and coastal travel - the single best month of the year. Expect around 28°C, 24 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Lush Ionian island known for dramatic Myrtos beach cliffs, subterranean Melissani lake, and colorful villages.
August in Kefalonia — the year's strongest window
August averages 28°C (82°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.
Expect 24 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 13.5 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Kefalonia at 10/10 — the reference point every other month on this page is measured against.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Figure on 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 Kefalonia in August?
- In August, Kefalonia averages 28°C, 24 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 Kefalonia?
- 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 Kefalonia in August?
- Expect about 24 mm of rain in August. Average humidity is 67% and there are about 31 days with 6+ hours of sunshine.
Curated in Kefalonia
Tickets & experiences
Things to do in Kefalonia
Kefalonia, Greece. Live activities and tours from GetYourGuide, matched to this destination.