The best times to visit Kefalonia Island for ideal weather are

March 12th to June 10th


September 17th to December 16th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Kefalonia Island Travel Info

Weather in Kefalonia Island


Average temperatures in Kefalonia Island vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a very low chance of precipitation throughout the year. The area is more temperate than most — in the 71st percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Kefalonia Island, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally mid to late August where highs are regularly around 90.1°F (32.3°C) with temperatures rarely dropping below 73.4°F (23°C) at night.

Kefalonia Island Temperatures (Fahrenheit)


Kefalonia Island Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Kefalonia Island Perceived Temperature (F)


Kefalonia Island Perceived Temperature (C)



Average Kefalonia Island Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 58.8 54.7 49.1
Feb 58.5 54 48
Mar 62 57.6 51.2
Apr 66.9 61.9 55
May 74.5 68.5 60.5
Jun 81.9 75.6 66.9
Jul 87.4 80.5 71.1
Aug 88.6 81.5 72.5
Sep 81.6 75.5 67.5
Oct 74.2 68.4 61.2
Nov 67.9 63.1 56.7
Dec 61.2 56.7 51

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 14.9 12.6 9.5
Feb 14.7 12.2 8.9
Mar 16.7 14.2 10.7
Apr 19.4 16.6 12.8
May 23.6 20.3 15.8
Jun 27.7 24.2 19.4
Jul 30.8 26.9 21.7
Aug 31.4 27.5 22.5
Sep 27.6 24.2 19.7
Oct 23.4 20.2 16.2
Nov 19.9 17.3 13.7
Dec 16.2 13.7 10.6



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Kefalonia Island are August, June, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 1 days of significant precipitation the week of January 29th.

When can you find snow in Kefalonia Island? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Kefalonia Island.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Kefalonia Island (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 4% 0 0.7
Feb 9% 0 1.8
Mar 5% 0 0.6
Apr 0% 0 0
May 0% 0 0
Jun 0% 0 0
Jul 1% 0 0.1
Aug 0% 0 0.1
Sep 4% 0 1.3
Oct 8% 0 2.5
Nov 5% 0 1
Dec 4% 0 0.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 4 0 1.8
Feb 9 0 4.6
Mar 5 0 1.5
Apr 0 0 0
May 0 0 0
Jun 0 0 0
Jul 1 0 0.3
Aug 0 0 0.3
Sep 4 0 3.3
Oct 8 0 6.4
Nov 5 0 2.5
Dec 4 0 1.8


Humidity and Wind

Kefalonia Island has some high humidity months, with other comfortably humid months. The least humid month is July (54% relative humidity), and the most humid month is November (65.8%).

Wind in Kefalonia Island is usually calm. The windiest month is February, followed by January and March. February’s average wind speed of around 7.2 knots (8.3 MPH or 13.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January where average top sustained speeds reach 13.4 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Kefalonia Island.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 7.1 Gentle breeze 12 Significant breeze
Feb 7.2 Gentle breeze 12.8 Significant breeze
Mar 6.8 Light breeze 11.8 Significant breeze
Apr 6.3 Light breeze 11.8 Significant breeze
May 5.9 Light breeze 11.3 Significant breeze
Jun 6.1 Light breeze 11.6 Significant breeze
Jul 6.2 Light breeze 12.2 Significant breeze
Aug 6.2 Light breeze 12.5 Significant breeze
Sep 6 Light breeze 11.6 Significant breeze
Oct 5.5 Light breeze 10.6 Gentle breeze
Nov 6.3 Light breeze 11.2 Significant breeze
Dec 6.7 Light breeze 11.9 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 61.4%
Feb 61.2%
Mar 62.2%
Apr 62.9%
May 61%
Jun 58.2%
Jul 54%
Aug 54.1%
Sep 61%
Oct 64.5%
Nov 65.8%
Dec 62.8%


Is it Safe to Travel to Kefalonia Island?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Greece; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 30, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Kefalonia Island, Greece is June, followed by August and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Kefalonia Island in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 26.3 in November means 26.3% of the tourists vs. June.



Overall Kefalonia Island Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 76.3°F (24.6°C) and 60°F (15.6°C) with warmer temperatures in the later months. Rain is extremely rare with 0 to 1 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with about 0 days of precipitation per month. June – August is the busiest season for tourism in Kefalonia Island, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 84°F (28.9°C) and 66°F (18.9°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 1 to 2 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is somewhat cool this time of year in Kefalonia Island to be enjoyable for warm weather travelers. The average high during this season is between 63.3°F (17.4°C) and 57.3°F (14.1°C). On average, it rains or snows a smalll amount: 1 to 3 times per month. These times of year are fairly slow with tourists.


Best Times to TravelGreece › Kefalonia Island, Greece