Best time to visit Skiathos

The best time to visit Skiathos for a beach holiday is during summer, from June to mid-September.

The peak summer months of July and August average a high of 29°C (84°F).

However, anytime from early-May to early-October is good for a range of outdoor activities. Mid-season – May, September and October – offers reasonable hotel prices and generally less crowds.

Skiathos weather

Skiathos enjoys a Mediterranean climate with hot, sunny summers and mild, wet winters. Despite winter rainfall, Skiathos is considered a year-round destination.

The Sporades are not as hot as the Cyclades. The Northern Sporades – Alonissos, Skiathos, Skopelos and Skyros – often have cold and windy periods in winter, especially the westernmost islands, such as Skiathos and Skopelos.

Summer, from June to mid-September, is hot and sunny, with little or no rainfall; maximum temperatures hover around 29°C (84°F), and occasionally higher.

Autumn, from mid-September to November, is pleasantly warm before gradually becoming cooler and windy by November.

Winter, from December to mid-March, is generally cold, with moderate to strong winds. Occasionally, it can snow. Rainfall is frequent; December sees the most rainfall during the year.

Spring, from mid-March to May, begins cold, windy and wet, before gradually become milder.

What is the best month to visit Skiathos?
June, July and August are the best months to visit Skiathos – the climate is perfect with hot, sunny weather and little to no rainfall.

July and August are especially popular, since this is the peak tourist season in Skiathos.

To avoid the crowds, higher prices and heat of summer, the months of May and September are also good for a range of outdoor activities.

Which is the hottest month in Skiathos?
The hottest month in Skiathos is usually August, with an average daily high temperature of 29°C (84°F), with high heat and humidity, and a low of 24°C (75°F).

On the warmest days of summer – July and August – the temperature usually reaches a high of around 33°C (91°°F)

The warm season lasts from early-June to mid-September, with an average daily high temperature above 25°C (77°F).

Which is the coldest month in Skiathos?
The coldest month in Skiathos is January, with an average high temperature of 14°C (57°F) and an average low temperature of 7°C (44°F).

The cool winter season lasts from late-November to late-March, with an average daily high temperature below 15°C (59°F).

Which is the sunniest month in Skiathos?
The sunniest month of the year in Skiathos is usually July with an average of 12 hours of sunshine per day; that's around 83% of daylight hours.

The months of June through September are the sunniest of the year.

What is the humidity in Skiathos?
Skiathos experiences significant seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 59% – 72% over the course of the year.

The more humid time of year lasts from mid-June through September, when you can expect the comfort level to be muggy at least 10% of the time.

The month with the most muggy days in Skiathos is August, with around 11 days that are muggy.

We derive the humidity comfort level from the dew point temperature, which measures moisture content in the air. A higher dew point feels muggy and uncomfortable.

November through May is generally comfortable, with no days in any month that are muggy.

When is the sea warmest in Skiathos?
The sea is usually at its warmest in Skiathos in August when the water temperature reaches 25°C (77°F), which is warm for swimming.

The sea temperature is comfortable for swimming from July through to September. June is a bit cool for swimming.

Which month has the most rain in Skiathos?
December is usually the wettest month in Skiathos with 95mm (3.7in) of rainfall on average. There are normally 12 days in December with some rain.

The wet season lasts from early-October to mid-April, with a greater than 14% chance of a given day being a wet day.

The drier season lasts from mid-April to early-October; the months with the least rainfall in Skiathos is July and August.

Which is the windiest month in Skiathos?
The windiest month of the year in Skiathos is January, with an average hourly wind speed of 19 kilometres per hour (12 mph; 10 knots).

The windy part of the year lasts from mid-October to late-March, with average wind speeds of more than 15 kilometres per hour (9 mph; 8 knots).

The less-windy time of year lasts from late-March through to mid-October. The calmest month of the year in Skiathos is June, with an average hourly wind speed of 11 kilometres per hour (7 mph; 6 knots).

The predominant average hourly wind direction in Skiathos is from the north throughout the year.

Skiathos Weather Averages

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average high temperature (°C)
12 12 14 17 22 27 29 29 25 21 17 13
Average low temperature (°C)
7 8 10 13 17 22 24 24 20 17 13 9
Average daily sunshine (hrs)
4 5 6 8 9 11 12 11 9 7 5 3
Average daily daylight (hrs)
10 11 12 13 14 15 14 13 12 11 10 9
Comfort level
Cold, no heat & humidity Cold, no heat & humidity Cold, no heat & humidity No heat & humidity Low heat & humidity icon Moderately hot icon Moderately hot icon Moderately hot icon Low heat & humidity icon No heat & humidity No heat & humidity Cold, no heat & humidity
Average relative humidity (%)
71 69 66 67 63 60 59 60 65 71 72 72
UV Index (max)
2 3 4 6 8 9 9 8 6 4 2 2
Average days of rainfall (≥1mm)
10 9 8 7 6 4 2 2 5 7 10 12
Average monthly rainfall (mm)
80 70 60 40 40 25 20 25 40 70 70 95
Average wind speed (km/h)
19 19 16 14 12 11 12 13 13 15 17 18
Average sea temperature (°C)
14 14 13 14 18 22 24 25 24 21 18 15
Skiathos Town, Skiathos, Greece

Holiday seasons

High season: July and August, when hotel and restaurant prices sky-rocket.

Mid season: From March to June and from September to October – the temperature is cooler, hotel prices are more reasonable and the crowds non-existent.

Note: The winter off-season, from November through February, is generally quiet everywhere; many hotels, restaurants and bars close down and the beaches are deserted. Ferry and air services are dramatically reduced.

Source: Weather data for Skiathos is based on meteorological statistics gathered for the 30-year period 1991 to 2020 by the Hellenic National Meteorological Service (HNMS).

Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.

More about Skiathos…

Latest update: Best time to visit Skiathos: 11 May, 2024

Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.