Skiathos Weather

The weather in Skiathos is similar to most islands of the Aegean Sea, i.e. cold and rainy during the winters, and warm and humid through the summers.

The island's temperatures peak during July and August, sometimes reaching up to 37.8°C/100°F. Skiathos is ideal for a visit at any point between May and October!
The tourist season is between late May to early October, though one will find that most shops and hotels are open during the summer months.

Below, you can see the average temperatures in Skiathos by month. We have also gathered information regarding the weather by month.

Average High & Low Air Temperature (in °C/°F)

 

Discover the weather in Skiathos by month:
January | February | March | April | May | June | July | August | September | October | November | December

January is the coldest month. Low temperatures are accompanied by frequent rainfalls.

The average temperature is 11.8°C/53.2°F (maximum 15°C/59°F | minimum 9°C/48.2°F)
On the coldest nights, the temperature may drop to 0°C/32°F.
On the warmest days, the temperature may reach 21.1°C/70°F.
The sunshine lasts approximately 4 hours.
Humidity reaches 69%, while the mean speed of the wind is around 18 kph (11.2 mph).
The mean sea temperature is about 14.6°C/58.3°F; hence, the waters are really cold.

February is another cold month. The atmosphere remains quite humid with low-temperature breezes.

The average temperature is 12.9°C/55.2°F (maximum: 14°C/57.2°F | minimum 9°C/48.2°F).
On the coldest nights, the temperature may drop to 1.1°C/34°F.
On the warmest days, the temperature may reach 22.8°C/73°F.
The sunshine lasts approximately 4 hours.
Humidity reaches 69%, while the mean speed of the wind is around 17 kph (10.6 mph).
The mean sea temperature is about 14.1°C/57.4°F; hence, swimming is not recommended.

March is unusually cold for an island of the Aegean Sea, with strong winds and temperatures below 15°C/59°F.

The average temperature is 13.4°C/56.2°F (maximum 15°C/59°F | minimum 10°C/50°F).
On the coldest nights, the temperature may drop to 1.1°C/34°F.
On the warmest days, the temperature may reach 22.8°C/73°F.
The sunshine lasts approximately 5 hours.
Humidity reaches 66%, while the mean speed of the wind is around 16 kph (9.9 mph).
The mean sea temperature is about 13.9°C/57°F; hence, swimming is not recommended.

With a rise in temperature, April is a bridge between winter and summer, though it is still considered to be relatively cold.

The average temperature is 16.6°C/61.8°F (maximum 18°C/64.4°F | minimum 13°C/55.4°F).
On the coldest nights, the temperature may drop to 7.2°C/45°F.
On the warmest days, the temperature may reach 27.2°C/81°F.
The sunshine lasts approximately 7 hours.
Humidity reaches 66%, while the mean speed of the wind is around 13 kph (8.1 mph).
The mean sea temperature is about 17.5°C/63.5°F; hence, the waters are quite cold.

May is an early-season option for vacation in Sporades, with a handful of available hotels and rooms for rent, along with more budget-friendly prices!

The average temperature is 20.7°C/69.2°F (maximum: 21°C/69.8°F | minimum: 17°C/62.6°F).
On the coldest nights, the temperature may drop to 12.2°C/54°F.
On the warmest days, the temperature may reach 31.1°C/88°F.
The sunshine lasts approximately 8.5 hours.
Humidity reaches 65%, while the mean speed of the wind is around 12 kph (7.4 mph).
The mean sea temperature is about 17.9°C/64.2°F; hence, the waters are still cold.

June starts off summertime with a significant decrease in rainfalls, warm sea waters, and rising temperatures.

The average temperature is 25.9°C/78.6°F (maximum 27°C/80.6°F | minimum 22°C/71.6°F).
On the coldest nights, the temperature may drop to 13.9°C/57°F.
On the warmest days, the temperature may reach 35°C/95°F.
The sunshine lasts approximately 10 hours.
Humidity reaches 63%, while the mean speed of the wind is around 12 kph (7.4 mph).
The mean sea temperature is 23°C/73.4°F; hence, the waters are quite warm.

July is one of the two warmest summer months in Skiathos. It is a period when the island receives a large number of visitors!

The average temperature is 28.3°C/83°F (maximum 30°C/86°F | minimum 24°C/75.2°F).
On the coldest nights, the temperature may drop to 18.9°C/66°F.
On the warmest days, the temperature may reach 37.2°C/99°F.
The sunshine lasts approximately 11 hours.
Humidity reaches 61%, while the mean speed of the wind is around 12 kph (7.4 mph).
The mean sea temperature is 26.1°C/79°F; hence, the waters are very warm.

August signals the peak of summertime, with most of the island's hotels and rooms being fully booked. We recommend that you pre-book your hotel room and ferry tickets months before reaching Skiathos, in order to make sure that you will make your trip happen.

The average temperature is 28.2°C/82.8°F (maximum 30°C/86°F | minimum 25°C/77°F).
On the coldest nights, the temperature may drop to 21.1°C/70°F.
On the warmest days, the temperature may reach 37.8°C/100°F.
The sunshine lasts approximately 10 hours.
Humidity reaches 64%, while the mean speed of the wind is around 13 kph (8.1 mph).
The mean sea temperature is 26.3°C/79.3°F; hence, the waters are very warm.

The month of September is a great time for a stay in Skiathos without breaking the bank!

The average temperature is 25.1C/77.2°F (maximum 26°C/78.8°F | minimum 22°C/71.6°F).
On the coldest nights, the temperature may drop to 13.9°C/57°F.
On the warmest days, the temperature may reach 36.1°C/97°F.
The sunshine lasts approximately 8.5 hours.
Humidity reaches 66%, while the mean speed of the wind is around 14 kph (8.7 mph).
The mean sea temperature is 24.5°C/76.1°F; hence, the waters are warm.

October is a month with limited tourist-orientated options in Skiathosm, as most shops and hotels shut down during the first days of the month.

The average temperature is 20.7°C/69.2°F (maximum 22°C/71.6°F | minimum 18°C/64.4°F).
On the coldest nights, the temperature may drop to 12.8°C/55°F.
On the warmest days, the temperature may reach 27.2°C/81°F.
The sunshine lasts approximately 5.5 hours.
Humidity reaches 72%, while the mean speed of the wind is around 15 kph (9.3 mph).
The mean sea temperature is 20.8°C/69.4°F; hence, the waters are fine.

The month of November is a preparation for Skiathos' winter season, with lower air temperatures and fewer hours of sunlight per day.

The average temperature is 17.6°C/63.6°F (maximum 18°C/64.4°F | minimum 14°C/57.2°F).
On the coldest nights, the temperature may drop to 7.8°C/46°F.
On the warmest days, the temperature may reach 27.2°C/81°F.
The sunshine lasts approximately 4.5 hours.
Humidity reaches 70%, while the mean speed of the wind is around 15 kph (9.3 mph).
The mean sea temperature is 17.3°C/63.1°F; hence, the waters are quite cold.

Skiathos gets colder and windier in December, with frequent rainfalls and low temperatures.

The average temperature is 13.4°C/56.2°F (maximum 15°C/59°F | minimum 11°C/51.8°F).
On the coldest nights, the temperature may drop to 5°C/41°F.
On the warmest days, the temperature may reach 20°C/68°F.
The sunshine lasts approximately 4 hours.
Humidity reaches 74%, while the mean speed of the wind is around 17 kph (10.6 mph).
The mean sea temperature is about 14.9°C/58.8°F; hence, the waters are very cold.