Weather in Kefalonia in December
In Kefalonia, December brings early-winter weather that is cool and one of the wettest times of year. Average highs reach 16°C / 60°F, with lows of around 10°C / 49°F. Expect rain on around 13 days and about 189 mm over the month, often in heavy bursts with dry spells between them. The sea averages about 18°C / 64°F, bracing, and too cool for many swimmers. Western Greece is the wettest part of the country, and heavy downpours often alternate with clear, mild days. Kefalonia is the largest Ionian island, dominated by Mount Ainos, which can see snow in winter. You get about 9½ hours of daylight a day, so plan sightseeing for the middle of the day. Pack a warm jacket, layers and a waterproof, plus shoes that can handle wet paths. Short days and changeable skies are part of the appeal, with fewer visitors and a more local feel. Plan outdoor time around the middle of the day, when it's at its warmest.
Swimming in Kefalonia in December
The sea around Kefalonia averages about 18°C / 64°F in December, refreshing rather than warm. For warm-water swimming, aim for July, August and September, when the sea is at its best. Myrtos and Antisamos are local favorites. There are no lifeguards or beach services out of season, so swim with care. A short wetsuit helps if you feel the cold.
Crowds & Prices in Kefalonia in December
December is one of the quietest months in Kefalonia, with few visitors and a local, everyday feel. It's the cheapest time to visit, with the best deals on accommodation. Christmas and New Year bring some Greek visitors home, but it stays quiet. With so few visitors, the atmosphere is genuinely local, and people have time to chat. You can usually book at short notice.
What's Open in Kefalonia in December
In December, ferries between Kyllini and Kefalonia run on a reduced winter timetable, and storms sometimes cause cancellations. Direct international flights run mainly from spring to autumn, while flights from Athens operate all year. Life goes on in the main town, but most resort hotels and beach tavernas close until spring. Archaeological sites and museums keep shorter winter hours. Most sites close on 25 and 26 December. Melissani Cave keeps limited hours or closes in the off-season.
Festivals & Holidays in Kefalonia in December
Christmas is celebrated with church services, carols sung door to door by children and festive sweets like melomakarona and kourabiedes. On 6 December, Saint Nicholas, patron saint of sailors, is honored in harbors across Greece, and decorated boats appear alongside Christmas trees. Locals in Kefalonia mark these dates in the traditional way, and visitors are welcome to join in. Otherwise, life follows its normal rhythm, with Sunday lunches and busy cafés rather than big events.
Is December a Good Time to Visit Kefalonia?
It depends on what you want. In December, Kefalonia is peaceful and inexpensive, but the season is over, the sea is too cool for most swimmers and the weather can turn. In numbers: highs of about 16°C / 60°F, lows of 10°C / 49°F and rain on around 13 days in a typical December. It's fine for a quiet break or visiting Melissani Cave. For a proper beach holiday, go in June, September or October.
Frequently Asked Questions
What time does the sun set in Kefalonia in December?
Sunset in Kefalonia is at around 5:20 pm at the start of December, around 5:20 pm in mid-December and around 5:25 pm by the end of the month, in Greek local time. With short days, plan outdoor sightseeing for the morning and early afternoon.
Is it cold in Kefalonia in December?
Not very. December is mild by northern European standards, but it's one of the wettest months in western Greece, with regular rain and wind. Snow at sea level is rare. Pack a warm, waterproof jacket and layers for the evenings.
Can I visit Melissani Cave in December?
Possibly not. Show caves in Greece often keep reduced hours or close for part of the off-season, so check before you go in December. When it is open, the temperature inside stays much the same all year. Its underground lake is explored by rowing boat and is at its most magical when sunlight pours through the open roof around midday.
Do I need a car on Kefalonia in December?
Yes, if you want to see more than Argostoli. Bus services are limited in December, and a car makes it easy to reach villages, beaches and viewpoints. Rental rates are among the lowest of the year, but fewer agencies are open.
Is December or January better for visiting Kefalonia?
December has the edge for atmosphere, with Christmas decorations and New Year celebrations, while January is quieter still, with Epiphany on 6 January. The weather is similar: cool, changeable and occasionally stormy. Both suit travelers who want the island at its most local.
Kefalonia Weather by Month
