AI-generatedArgostoli, Kefalonia at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 28°
- Warmest sea
- Aug · 26.1°
- Sunshine a year
- 2,870 h
- Rain a year
- 870 mm
- Climate
- Mediterranean
- Time zone
- UTC+2 / UTC+3
- Elevation
- 2 m
Climate in Argostoli, Kefalonia
Argostoli, Kefalonia has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 28 °C, while January is the coolest at 14 °C. With around 2,870 hours of sunshine a year, Argostoli, Kefalonia is sunny; July is the sunniest month with 12.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 19°
- Midday, 13:00: about 22°
- Afternoon, 16:00: about 22°
- Evening, 20:00: about 21°
- Night, 23:00: about 20°
07:4519:02
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
What is the weather like in Argostoli, Kefalonia in October?
In October, Argostoli, Kefalonia is warm: daytime highs average 22 °C, and nights cool down to about 19 °C. The sea averages 22.8 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is frequent, with about 9 rainy days and 108 mm in total. All in all, October is a good month for a holiday in Argostoli, Kefalonia.
More details for October
- Daylight
- 11 h 16 min07:45 – 19:02
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or more
- Wind
- 27 km/haverage daily peak
- Cloud cover
- 40 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %48 %
- Seaweight 25 %83 %
- Sunshineweight 20 %58 %
- Few rainy daysweight 20 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Rain jacket or umbrella
Sea temperature in Argostoli, Kefalonia
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 22.1 – 23.9 °C
Swimming season: Jun – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Argostoli, Kefalonia ranges from 15.5 °C in March to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
From October to March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 25.0 and 27.2 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 16.2° | 15.4° | 17.2° | cold |
| FebruaryFeb | 15.6° | 14.7° | 16.3° | cold |
| MarchMar | 15.5° | 14.9° | 16.1° | cold |
| AprilApr | 16.3° | 15.8° | 17.0° | cold |
| MayMay | 19.0° | 18.1° | 19.9° | fresh |
| JuneJun | 22.8° | 21.9° | 23.9° | refreshing |
| JulyJul | 24.9° | 23.9° | 26.2° | pleasant |
| AugustAug | 26.1° | 25.0° | 27.2° | warm |
| SeptemberSep | 25.1° | 24.0° | 26.3° | pleasant |
| OctoberOct | 22.8° | 22.1° | 23.9° | refreshing |
| NovemberNov | 20.5° | 19.2° | 21.5° | refreshing |
| DecemberDec | 17.9° | 17.0° | 18.8° | fresh |
Sunshine hours in Argostoli, Kefalonia
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.5 of 11.3 hours of daylight in Argostoli, Kefalonia, 58 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Argostoli, Kefalonia
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 4 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 30 min
- Fair skin
- about 35 min
- Light brown skin
- about 50 min
- Olive skin
- about 65 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Argostoli, Kefalonia: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Argostoli, Kefalonia has about 9 rainy days with 108 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 14° | 11° | 16.2° | 5.0 h | 13 | 125 |
| FebruaryFeb | 19 | 14° | 11° | 15.6° | 5.7 h | 11 | 98 |
| MarchMar | 25 | 15° | 12° | 15.5° | 7.1 h | 10 | 78 |
| AprilApr | 35 | 17° | 14° | 16.3° | 8.5 h | 6 | 36 |
| MayMay | 58 | 21° | 17° | 19.0° | 9.4 h | 3 | 17 |
| JuneJun | 95 | 25° | 21° | 22.8° | 11.7 h | 2 | 11 |
| JulyJul | 100 | 27° | 24° | 24.9° | 12.0 h | 1 | 5 |
| AugustAug | 100 | 28° | 24° | 26.1° | 10.9 h | 1 | 7 |
| SeptemberSep | 95 | 25° | 22° | 25.1° | 8.3 h | 6 | 64 |
| OctoberOct | 62 | 22° | 19° | 22.8° | 6.5 h | 9 | 108 |
| NovemberNov | 26 | 19° | 16° | 20.5° | 4.7 h | 13 | 167 |
| DecemberDec | 14 | 15° | 13° | 17.9° | 4.3 h | 14 | 154 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)
38.18° N, 20.49° E · 2 m · Europe/Athens
Best time to visit Argostoli, Kefalonia
The best time to visit Argostoli, Kefalonia is from June to September. For a beach holiday with the sea above 21 °C, go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from March to October. Rain is most frequent from November to January; the wettest month is November with 167 mm.
Argostoli, Kefalonia through the seasons
How the weather changes over the seasons, with averages for each.
Argostoli, Kefalonia in spring
Mar – May
Poor
- 15–21 °C by day
- Sea 17 °C
- 8 h of sun a day
- 20 rainy days in all
Argostoli, Kefalonia in summer
Jun – Aug
Excellent
- 25–28 °C by day
- Sea 25 °C
- 12 h of sun a day
- 3 rainy days in all
Argostoli, Kefalonia in autumn
Sep – Nov
Good
- 19–25 °C by day
- Sea 23 °C
- 7 h of sun a day
- 28 rainy days in all
Argostoli, Kefalonia in winter
Dec – Feb
Poor
- 14–15 °C by day
- Sea 17 °C
- 5 h of sun a day
- 38 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Argostoli, Kefalonia for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
Jun – Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – Oct
15–28 °C and not too much rain
Rainy months
Nov – Jan
12 or more rainy days
Argostoli, Kefalonia month by month
The typical weather for every month at a glance.
14January14° · Sea 16° · 5 h
In January, Argostoli, Kefalonia is cool: daytime highs average 14 °C, and nights cool down to about 11 °C. The sea averages 16.2 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 125 mm in total. It is often windy, with gusts of around 33 km/h. All in all, January is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in January19February14° · Sea 16° · 6 h
In February, Argostoli, Kefalonia is cool: daytime highs average 14 °C, and nights cool down to about 11 °C. The sea averages 15.6 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 98 mm in total. It is often windy, with gusts of around 33 km/h. All in all, February is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in February25March15° · Sea 16° · 7 h
In March, Argostoli, Kefalonia is cool: daytime highs average 15 °C, and nights cool down to about 12 °C. The sea averages 15.5 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 78 mm in total. It is often windy, with gusts of around 31 km/h. All in all, March is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in March35April17° · Sea 16° · 9 h
In April, Argostoli, Kefalonia is mild: daytime highs average 17 °C, and nights cool down to about 14 °C. The sea averages 16.3 °C – swimming is only for the hardy. The sun shines for around 9 hours a day. Rain falls on about 6 days, adding up to 36 mm. All in all, April is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in April58May21° · Sea 19° · 9 h
In May, Argostoli, Kefalonia is mild: daytime highs average 21 °C, and nights cool down to about 17 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. With around 9 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 17 mm in total. All in all, May is a so-so month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in May95June25° · Sea 23° · 12 h
In June, Argostoli, Kefalonia is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 22.8 °C – refreshing for a swim. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. All in all, June is an excellent month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in June100July27° · Sea 25° · 12 h
In July, Argostoli, Kefalonia is hot: daytime highs average 27 °C, and even at night it stays warm at around 24 °C. The sea averages 24.9 °C – pleasant for swimming. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in July100August28° · Sea 26° · 11 h
In August, Argostoli, Kefalonia is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 26.1 °C – lovely and warm for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in August95September25° · Sea 25° · 8 h
In September, Argostoli, Kefalonia is warm: daytime highs average 25 °C, and even at night it stays warm at around 22 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 6 days, adding up to 64 mm. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in September62October22° · Sea 23° · 7 h
In October, Argostoli, Kefalonia is warm: daytime highs average 22 °C, and nights cool down to about 19 °C. The sea averages 22.8 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is frequent, with about 9 rainy days and 108 mm in total. All in all, October is a good month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in October26November19° · Sea 21° · 5 h
In November, Argostoli, Kefalonia is mild: daytime highs average 19 °C, and nights cool down to about 16 °C. The sea averages 20.5 °C – refreshing for a swim. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 167 mm in total. It is often windy, with gusts of around 32 km/h. All in all, November is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in November14December15° · Sea 18° · 4 h
In December, Argostoli, Kefalonia is cool: daytime highs average 15 °C, and nights cool down to about 13 °C. The sea averages 17.9 °C – bracing, so a wetsuit helps for longer swims. Expect around 4 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 154 mm in total. It is often windy, with gusts of around 33 km/h. All in all, December is not an ideal month for a holiday in Argostoli, Kefalonia.
Argostoli, Kefalonia in DecemberArgostoli, Kefalonia compared
Put Argostoli, Kefalonia side by side with another destination.
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Argostoli vs. Zakynthos Town
In October Zakynthos Town has the better holiday weather (score 67 vs. 62). During the day Zakynthos Town is 1 °C warmer than Argostoli. The sea is about equally warm. Zakynthos Town gets one hour less sunshine a day.
| in October | Argostoli | Zakynthos Town |
|---|---|---|
| Holiday score | 62 | 67 |
| Daytime high | 22° | 23° |
| Sea | 23° | 23° |
| Sunshine | 7 h | 6 h |
| Rainy days | 9 | 8 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Greece in October: the best places
In October, Argostoli, Kefalonia ranks 10 of 16 destinations in this country.
- Athens23°23°91
- 2Lindos23°24°85
- 3Rhodes Town23°24°83
- 4Heraklion24°23°82
- 5Thessaloniki21°21°81
- 6Kos Town22°23°73
- 7Zakynthos Town23°23°67
- 8Chania22°23°65
- 10ArgostoliThis page22°23°62
Planning a trip to Argostoli, Kefalonia
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Getting there
Flying from
- Nonstop flight
- about 3 h 10 min
- Distance
- 2,200 km
- Time zone
- UTC+3
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Argostoli, Kefalonia
When is the best time to visit Argostoli, Kefalonia?
The best time to visit Argostoli, Kefalonia is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Argostoli, Kefalonia?
The sea temperature in Argostoli, Kefalonia ranges from 15.5 °C in March to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
Can you swim in Argostoli, Kefalonia in October?
Yes. In October the sea averages 22.8 °C – refreshing for a swim.
What is the warmest month in Argostoli, Kefalonia?
August is the warmest month, with average highs of 28 °C and nights around 24 °C. January is the coolest month at 14 °C.
When does it rain most in Argostoli, Kefalonia?
Rain is most frequent from November to January; the wettest month is November with 167 mm. The driest month is July with 5 mm.
How many hours of sunshine does Argostoli, Kefalonia get?
Argostoli, Kefalonia gets around 2,870 hours of sunshine a year. The sunniest month is July with 12.0 hours a day; in December there are 4.3 hours a day.
What time zone is Argostoli, Kefalonia in?
Argostoli, Kefalonia uses the time zone Europe/Athens: UTC+2 in January and UTC+3 in July.
How long is the flight from London to Argostoli, Kefalonia?
A nonstop flight from London to Argostoli, Kefalonia takes about 3 h 10 min, for a straight-line distance of about 2,200 km.
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