When to visit Kefalonia?
The decision rests on several criteria. Climate score, tourist crowds and feasible activities.
Kefalonia (Cephalonia), the largest Greek Ionian island: 35,000 inhabitants over 780 km² south of Corfu. Made famous by the Louis de Bernières novel Captain Corelli's Mandolin (1994) then the 2001 film with Nicolas Cage. Rebuilt after the devastating 1953 earthquake (95% of the island destroyed, one of the worst earthquakes of the 20th century in Europe). June is my favourite month (9.5/10): 21-27°C, 11% rain, sea at 22°C. July-August drop to 6.9/10 due to the heat (23-30°C) and the crowds (Italians, British in the majority). September stays excellent (8.8/10). From November to March, expect 9-16°C and 33-48% rain: mild but rainy, many hotels close. Highlights: Myrtos Beach (the most famous in Kefalonia, one of the most photographed beaches in Greece along with Navagio, white cliffs 200m, unique turquoise water thanks to the light reflecting on the clear bottom, panoramic point from the road above), Antisamos Beach (where the film Captain Corelli's Mandolin was shot, near Sami), Melissani Cave (underground lake discovered 1951, turquoise water lit by a hole in the vault at solar noon, 30-min crossing by boat), Drogarati Cave (stalactites/stalagmites, sometimes concerts inside for its exceptional acoustics), Argostoli (capital, port, restaurants), Fiscardo (one of the only villages spared by the 1953 earthquake, preserved Venetian architecture, smart port), Assos (picturesque village on a peninsula with 16th-century Venetian fortress), Mount Ainos (national park, endemic Kefalonian fir, highest point 1628m). Excursions: Ithaca (Ulysses' return island according to Homer, 30 min by ferry from Sami), Lefkada, Zakynthos. Try kreatopita (meat pie), aliada (garlic puree), thyme honey, Robola wine (local AOC white grape, ideal with fish). Kefalonia airport (EFL).
About the founder →What you grasp in 5 seconds
Kefalonia offers 5 comfortable months, without any month really to avoid. The gap stays moderate: 9.1 in June vs 4.1 in January.
What to check next
Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.
Next action
Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.
How we calculate the score
The score combines 4 weighted criteria using 10 years of real climate data (ERA5).
Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →
Compare all 12 months
Month-by-month details: temperature, rain, sunshine, score and verdict.
| Month | T° min | T° max | Rain % | mm/day | Sun | Score | Verdict |
|---|---|---|---|---|---|---|---|
| 🌥️ January → | 9°C | 14°C | 48% | 4.8mm | 4.8h | 4.1/10 | Decent period |
| 🌥️ February → | 9°C | 15°C | 33% | 3.1mm | 5.9h | 4.4/10 | Decent period |
| 🌥️ March → | 10°C | 16°C | 37% | 2.6mm | 6.3h | 4.4/10 | Decent period |
| ☀️ April → | 13°C | 18°C | 22% | 1.3mm | 7.8h | 7.6/10 | Best period |
| ☀️ May → | 16°C | 22°C | 22% | 1.3mm | 8.6h | 8.2/10 | Best period |
| ☀️ June → | 21°C | 27°C | 11% | 0.6mm | 9.3h | 9.1/10 | Best period |
| ⛅ July → | 23°C | 30°C | 3% | 0.3mm | 9.7h | 6.5/10 | Decent period |
| ⛅ August → | 24°C | 30°C | 8% | 0.3mm | 8.9h | 6.3/10 | Decent period |
| ☀️ September → | 21°C | 27°C | 21% | 2.2mm | 7.3h | 8.5/10 | Best period |
| ☀️ October → | 17°C | 23°C | 29% | 3.4mm | 6.3h | 7.9/10 | Best period |
| 🌥️ November → | 14°C | 19°C | 47% | 7.0mm | 5.1h | 4.5/10 | Decent period |
| 🌥️ December → | 11°C | 16°C | 43% | 4.9mm | 4.9h | 4.3/10 | Decent period |
Annual temperatures — Kefalonia
Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.
For your trip
A few angles depending on what kind of trip you are planning.
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
🎟️ Activities & tours · Kefalonia
GetYourGuide selection · free cancellation
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Greece
🌡️ Climate
🏖️ Beach holiday
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Where is Kefalonia ?
Global position + regional geographic context.