The month in detail
What to expect in December
In December, Kefalonia sees 16°C during the day with 4.9h of sunshine per day. Expect rain on 39% of days — a light raincoat in the bag is recommended.
December ranks 11 out of 12 months in Kefalonia. Compared to November: −3°C daytime.
This month's conditions
What it's like in December
UV index
3 · low
no protection needed
Feels like
dry air
9°
Sea
18°C
cool, invigorating
Daylight
9.4h of daylight
Air quality
good
AQI 28
Compare
Is December the right month?
The best month in Kefalonia is June (9.3/10), 5.0 pts higher than December.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Kefalonia
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Kefalonia
GetYourGuide selection · free cancellation
Practical info
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
🗣️LanguageGreek
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trendData unavailable
🔥Hottest monthJuly · 30°C
❄️Coolest monthJanuary · 14°C
🌧️Rainiest month ⓘDecember · 39%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in December
If December doesn't convince you for this destination, compare with others.
Location
Where is Kefalonia ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
GreeceTemperate oceanic climate with a 9.3 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
38.18°N · 20.49°E
Questions
Frequently asked questions
What is the best time to visit Kefalonia?
June is the best month with 27.0°C highs, 21.0°C lows, 9.3h of sunshine and 3.0% rainy days. The months of June & September offer comparable conditions.
How many hours of sunshine does Kefalonia get in June?
Kefalonia averages 9.3 sunshine hours per day in June. It is the sunniest month with a climate score of 9.1/10.
What is the rainiest month in Kefalonia?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Kefalonia in June?
In June, overnight lows reach 21.0°C, while afternoon highs average 27.0°C.
Is Kefalonia good in winter?
In winter (December-February), Kefalonia scores 4.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 9.1/10.
When should you avoid Kefalonia?
January is the most difficult month to visit Kefalonia, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Kefalonia in December?
In December, the sea averages 18°C in Kefalonia: cool, invigorating. Swimming is possible but brisk; sensitive swimmers may prefer a wetsuit.
Do you need sun protection in Kefalonia in December?
The average UV index reaches 3 in December in Kefalonia (low), with about 9.4h of daylight. No protection needed.