30YearWeather
Kefalonia in December
Kefalonia weather in December - Greece
🌤️Mild & Comfortable

Kefalonia Weather in December

Plan your December trip to Kefalonia, Greece. Based on 30 years of NASA data, expect temperatures of 15°C (high) to 12°C (low), with 36% rain probability and 8 hours of daily sunshine. The Coastal Waters averages 19°C in December. Pack rain gear for around 28 rainy days.

Avg High
15°C

Hottest around day 1

Avg Low
12°C

Coolest around day 31

Rainy Days
28days

36% avg rain chance

Sunshine
8hrs/day

Winter season

Sea Temperature in December

Coastal Waters(Ocean)

18.6°C

Monthly Average

Water Feel
🏊Pleasant

Comfortable for most swimmers

Swim Rating
👍Good for swimming

Based on average sea surface temperature

Body of Water
Coastal Waters

Ocean

Kefalonia coastline

Kefalonia December Weather Calendar

Click any day to see detailed weather information

Day 1
rain
Rainy
17°C47%
Day 2
rain
Rainy
17°C50%
Day 3
rain
Rainy
17°C50%
Day 4
rain
Rainy
17°C47%
Day 5
rain
Rainy
16°C49%
Day 6
rain
Rainy
16°C43%
Day 7
cloudy
Cloudy
16°C40%
Day 8
rain
Rainy
16°C41%
Day 9
rain
Rainy
16°C48%
Day 10
rain
Rainy
16°C47%
Day 11
rain
Rainy
16°C47%
Day 12
rain
Rainy
16°C45%
Day 13
cloudy
Cloudy
16°C40%
Day 14
cloudy
Cloudy
16°C37%
Day 15
cloudy
Cloudy
16°C33%
Day 16
cloudy
Cloudy
16°C34%
Day 17
cloudy
Cloudy
15°C33%
Day 18
cloudy
Cloudy
15°C31%
Day 19
cloudy
Cloudy
15°C29%
Day 20
cloudy
Cloudy
15°C32%
Day 21
cloudy
Cloudy
15°C29%
Day 22
cloudy
Cloudy
15°C29%
Day 23
cloudy
Cloudy
15°C27%
Day 24
cloudy
Cloudy
15°C23%
Day 25
cloudy
Cloudy
15°C23%
Day 26
cloudy
Cloudy
15°C25%
Day 27
cloudy
Cloudy
15°C27%
Day 28
cloudy
Cloudy
15°C29%
Day 29
cloudy
Cloudy
15°C32%
Day 30
cloudy
Cloudy
14°C31%
Day 31
cloudy
Cloudy
14°C29%

Essential Travel Info for Kefalonia

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

EUR

€ Euro

Language

Greek

Driving

Right side

Connect

Free wifi is provided in many apartments...

Safety

High Safety

GPI: 1.838

Travel Intelligence

Exclusive flight analytics & health data for Kefalonia

Smart Flight Estimator

Airport-to-Airport Logistics

unlock smart flight estimates

Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote
7/ 100
Traffic Index

Off the beaten path

Peak Daily Arrivals

0

slots per day

Peak

Jun

Low

Jan

Monthly Traffic Distribution

1
Jan
2
Feb
2
Mar
5
Apr
8
May
18
Jun
16
Jul
7
Aug
7
Sep
7
Oct
7
Nov
7
Dec
Traffic Level
Low Season

Key Connections

Athens Eleftherios Venizelos (ATH)
Preveza/Lefkada Aktion National (PVK)
Zakynthos Island Dionysios Solomos (ZTH)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Greece. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Greece.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Greece.If rabies exposures occur while in Greece, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is December a Good Time to Visit Kefalonia?

👌Worthwhile timing with some trade-offs
Short Answer

December is excellent for visiting Kefalonia: comfortable 15°C temperatures, only 36% rain risk, and 6.9h of daily sunshine create ideal conditions for exploration.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

58 earthquakes recorded in this month (30-year data)

Health precautions needed

Be aware of: Leptospirosis, Crimean-Congo Hemorrhagic fever, Leishmaniasis

Shoulder season - balanced conditions

39% of peak - good value with moderate crowds

Good For

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🎯
    Adventure seekers

    1.14m waves - good for surfing and water sports

  • 🌡️
    Heat-sensitive visitors

    Manageable 15.4°C without oppressive humidity

Who Should Avoid

Suitable for most traveler types

Related Guides

Best Time to VisitWhen to AvoidKefalonia Overview
930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Kefalonia in December averages 15°C with 36% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Kefalonia in December

What are the temperatures in Kefalonia in December?

Daytime highs average 15°C, nights drop to 12°C. Temperatures remain fairly consistent.

How many rainy days in Kefalonia in December?

Expect around 28 days with measurable rainfall. An umbrella is advisable.

What to wear in Kefalonia in December?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is December peak season in Kefalonia?

This is shoulder season—moderate prices and manageable crowds.