Kefalonia weather

Our guide to the weather in Kefalonia during September

26

Average high

6

UV Index

142mm

Monthly rainfall

25

Sea temperature

Kefalonia is a stunningly beautiful Greek island with plenty of activities and attractions for visitors, especially during September when the weather is mild and sunny. We've looked at the most up-to-date weather data for Kefalonia, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Kefalonia weather in September.

How warm is it in Kefalonia during September?

The temperature is extremely stable in September with average highs of 26℃ and lows just 2℃ lower at 23℃. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Kefalonia during September?

On average, there will be 4 rainy days during the month, amounting to 141.6mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Kefalonia during September?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With moderate humidity, any breeze will have a welcome cooling effect.

How warm is the sea in Kefalonia during September?

The water around Kefalonia reaches a very pleasant 25℃ during September. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable.

Holidays in Kefalonia

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Flights

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Kefalonia Blog posts

From the UK's most popular travel bloggers

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Lesser known islands to visit on a Greek Island hopping itinerary

27th July 2020 by Stoked to Travel

There are more than 6,000 islands in Greece, so deciding where to go can be a pretty challenging task. A google search typically brings up the favourites, including Santorini, Mykonos and Crete. What about what the smaller islands? The ones that are just that bit harder to get to? The islands which are almost untouched by mass tourism, offering a slower and more gentle insight into the charm of Greek daily life. You may have read my Greek Island hopping itinerary here, which covers a popular...

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The best place to stay in Kefalonia

15th July 2020 by The Island Voyager

Kefalonia is one of the largest of the Greek islands and the biggest within the Ionian. It’s home to some great beaches, picturesque fishing villages and dramatic landscapes including an impressive underground cave. There’s a lot to explore. So as well as researching prior to my trip, I also visited the main areas to figure the best place to stay in Kefalonia....

Weather in Kefalonia

Our month-by-month guide to the weather and climate in Kefalonia

13.6

Kefalonia weather in

January
13.9

Kefalonia weather in

February
14.6

Kefalonia weather in

March
16.9

Kefalonia weather in

April
20.3

Kefalonia weather in

May
24.1

Kefalonia weather in

June
26.9

Kefalonia weather in

July
28.0

Kefalonia weather in

August
25.5

Kefalonia weather in

September
22.0

Kefalonia weather in

October
19.0

Kefalonia weather in

November
15.6

Kefalonia weather in

December