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Best time to visit Kefalonia: month by month
Short answer
June and September are the best months, with highs of about 26–28°C, warm sea and fewer visitors than mid-summer. July and August are the hottest (about 31–32°C), busiest and most expensive. Many hotels and tavernas close from November to April.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 11°C | 6°C | 20 | low |
| Feb | 12°C | 5°C | 8 | low |
| Mar | 13°C | 6°C | 13 | low |
| Apr | 17°C | 9°C | 10 | low |
| May | 23°C | 14°C | 7 | medium |
| Jun | 28°C | 19°C | 5 | high |
| Jul | 32°C | 22°C | 2 | very high |
| Aug | 31°C | 21°C | 3 | very high |
| Sep | 26°C | 18°C | 6 | high |
| Oct | 22°C | 14°C | 8 | medium |
| Nov | 17°C | 11°C | 17 | low |
| Dec | 14°C | 8°C | 13 | low |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs rise from about 13°C in March to 23°C in May, with 7–13 rainy days; green landscapes and wildflowers, but the sea is still cool.
Summer (Jun–Aug)
Hot and dry, with highs of 28–32°C, lows of 19–22°C and only 2–5 rainy days; peak season with the warmest sea.
Autumn (Sep–Nov)
Highs of about 26°C in September falling to 17°C in November; warm sea in September and October, rain increases in November.
Winter (Dec–Feb)
Mild but wet, with highs of 11–14°C and up to 20 rainy days in January; quiet, with many businesses closed.
Events worth planning around
- Greek Orthodox Easter — March, April or May, dates vary
- Feast of the Virgin Mary and the snakes of Markopoulo — 15 August
- Feast of Agios Gerasimos, the island's patron saint, at Omala — 16 August and 20 October
When to avoid
Late July and August are the most crowded and expensive, and the Melissani queues are long. November to March is wet, and many hotels, tavernas and boat trips do not operate.
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Common questions
What is the best month to visit Kefalonia?
June and September, with warm sea, highs of about 26–28°C and fewer crowds.
Is Kefalonia open in winter?
Argostoli stays open, but many hotels, tavernas and boat trips close from November to April.
When is the snake festival in Markopoulo?
Around 15 August, the feast of the Virgin Mary.