The climate of Skiathos, a Greek island belonging to the Northern Sporades, is
, with relatively mild, rainy winters and hot, sunny summers.
Being a short distance from the mainland, the island is subject to outbreaks of cold air in winter, while in late spring and summer, it may occasionally receive some showers or thunderstorms coming from the same continent.
The island's interior is covered with hills, which reach about 400 meters (1,300 feet) above sea level, and it's green. The airport is located a short distance from the main town, and the track is a few steps away from both the sea and the harbor.
follows the Mediterranean pattern, so it is more frequent from October to April, and is not abundant, since it amounts to 630 millimeters (24.8 inches) per year. As mentioned, rainfall is rare in summer, and occurs in the form of short showers or thunderstorms.
, from December to mid-March, is quite mild: the maximum temperature is on average about 12/13 °C (54/55 °F), but there can be milder periods, with highs around 15/18 °C (59/64 °F), and cold periods, when highs remain around 5/7 °C (41/45 °F), and with a moderate or even strong wind that heightens the feeling of cold. In addition, sometimes, and not too infrequently, it can snow, and there may be frosts at night.
, from mid-March to May, is mild, though with some periods a bit cold, windy and rainy, which gradually become less frequent.
, from June to mid-September, is hot and sunny, with rare showers. Typically, the maximum temperatures hover around 30 °C (86 °F) and rarely exceed 33/34 °C (91/93 °F), sometimes, however, there can be short heat waves, in which the temperature can reach 38/40 °C (100/104 °F).
, from mid-September to November, is pleasantly warm at first, then gradually becomes milder. The rains gradually become more frequent, although in September and the first half of October, there are still entire weeks without rain. In November, the first days a bit cold and windy begin to occur, and sometimes also in October.
in Skiathos is very good in summer, when clear skies prevail, and it is also good in May and September, while in the rest of the year, there are both sunny periods and periods with cloudy skies.
, still cold in May and cool in June, becomes high enough for swimming from July to September, when it reaches 24/25 °C (75/77 °F).
to go to Skiathos for a beach holiday is summer, from June to mid-September. In June, and sometimes in early July, there can be some cool evenings, so it's better to bring a sweatshirt for the evening.
In May, not only the sea is cold, but there can also be some cool days for sunbathing, with highs below 20 °C (68 °F), especially in the first part of the month.
If you want to go on excursions on the island, you can choose May and September.
. Here are the average temperatures.
January, the coldest month of the year, is generally a mild month. The average temperature is of
9.8 °C, with a minimum of
7.8 °C and a maximum of
11.8 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-2.2 °C in January 2017.
On the warmest days of the month, the temperature usually reaches around
17.5 °C. However, it reached
22 °C in January 1995.
Precipitation amounts to
80 mm, distributed over 10 days.
The day lasts on average 9 hours and 50 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
11.4 kph.
The average sea temperature is of
14.3 °C. Therefore, the sea is very cold for swimming.
February is generally a mild month. The average temperature is of
10.4 °C, with a minimum of
8.4 °C and a maximum of
12.4 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-2 °C in February 2004.
On the warmest days of the month, the temperature usually reaches around
19 °C. However, it reached
22 °C in February 1995.
Precipitation amounts to
70 mm, distributed over 9 days.
The day lasts on average 10 hours and 50 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 69%.
The average wind speed is of
11.5 kph.
The average sea temperature is of
13.8 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
12.5 °C, with a minimum of
10.5 °C and a maximum of
14.4 °C.
On the coldest nights of the month, the temperature usually drops to around
4.5 °C. However, it dropped to
1 °C in March 1996.
On the warmest days of the month, the temperature usually reaches around
21.5 °C. However, it reached
31 °C in March 2001.
Precipitation amounts to
60 mm, distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 66%.
The average wind speed is of
11.6 kph.
The average sea temperature is of
13.7 °C. Therefore, the sea is very cold for swimming.
April is generally a very mild month. The average temperature is of
15.2 °C, with a minimum of
13.1 °C and a maximum of
17.3 °C.
On the coldest nights of the month, the temperature usually drops to around
7.5 °C. However, it dropped to
5 °C in April 2003.
On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
26 °C in April 2012.
Precipitation amounts to
40 mm, distributed over 7 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 67%.
The average wind speed is of
8.3 kph.
The average sea temperature is of
14.7 °C. Therefore, the sea is very cold for swimming.
May is generally a warm month. The average temperature is of
20.1 °C, with a minimum of
17.8 °C and a maximum of
22.5 °C.
On the coldest nights of the month, the temperature usually drops to around
12 °C. However, it dropped to
9 °C in May 1992.
On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
31 °C in May 2001.
Precipitation amounts to
40 mm, distributed over 6 days.
The day lasts on average 14 hours and 25 minutes. So the days are long.
There are on average 9.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 63%.
The average wind speed is of
8.8 kph.
The average sea temperature is of
17.8 °C. Therefore, the sea is cold for swimming.
June is generally a warm to hot month. The average temperature is of
24.5 °C, with a minimum of
22.1 °C and a maximum of
27 °C.
On the coldest nights of the month, the temperature usually drops to around
17 °C. However, it dropped to
14 °C in June 1997.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
40 °C in June 2007.
Precipitation amounts to
25 mm, distributed over 4 days.
The day lasts on average 14 hours and 55 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 11 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 60%.
The average wind speed is of
10.2 kph.
The average sea temperature is of
21.9 °C. Therefore, the sea is cool for swimming.
July is generally a warm to hot month. The average temperature is of
26.7 °C, with a minimum of
24.2 °C and a maximum of
29.2 °C.
On the coldest nights of the month, the temperature usually drops to around
19.5 °C. However, it dropped to
16 °C in July 1992.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
43 °C in July 2000.
Precipitation amounts to
20 mm, distributed over 2 days.
The day lasts on average 14 hours and 35 minutes. So the days are long.
There are on average 12 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 59%.
The average wind speed is of
10.3 kph.
The average sea temperature is of
24.3 °C. Therefore, the sea is warm enough for swimming.
August, the hottest month of the year, is generally a warm to hot month. The average temperature is of
26.8 °C, with a minimum of
24.3 °C and a maximum of
29.2 °C.
On the coldest nights of the month, the temperature usually drops to around
20 °C. However, it dropped to
17 °C in August 1991.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
38 °C in August 1994.
Precipitation amounts to
25 mm, distributed over 2 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 11.5 hours of sunshine per day. So, the sun shines 85% of the time.
The average humidity is 60%.
The average wind speed is of
10.2 kph.
The average sea temperature is of
25.1 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm to hot month. The average temperature is of
23 °C, with a minimum of
20.5 °C and a maximum of
25.6 °C.
On the coldest nights of the month, the temperature usually drops to around
15.5 °C. However, it dropped to
12 °C in September 1992.
On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
36 °C in September 2015.
Precipitation amounts to
40 mm, distributed over 5 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 65%.
The average wind speed is of
9.7 kph.
The average sea temperature is of
23.8 °C. Therefore, the sea is warm enough for swimming.
October is generally a warm month. The average temperature is of
19.2 °C, with a minimum of
17 °C and a maximum of
21.4 °C.
On the coldest nights of the month, the temperature usually drops to around
12 °C. However, it dropped to
7 °C in October 1997.
On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
31 °C in October 1991.
Precipitation amounts to
70 mm, distributed over 7 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
9.3 kph.
The average sea temperature is of
21 °C. Therefore, the sea is cool for swimming.
November is generally a very mild month. The average temperature is of
15.3 °C, with a minimum of
13.4 °C and a maximum of
17.1 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
4 °C in November 1995.
On the warmest days of the month, the temperature usually reaches around
23.5 °C. However, it reached
27 °C in November 2000.
Precipitation amounts to
65 mm, distributed over 10 days.
The day lasts on average 10 hours and 0 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
9.5 kph.
The average sea temperature is of
17.9 °C. Therefore, the sea is cold for swimming.
December is generally a mild month. The average temperature is of
11 °C, with a minimum of
9 °C and a maximum of
13 °C.
On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
1 °C in December 1998.
On the warmest days of the month, the temperature usually reaches around
19 °C. However, it reached
23 °C in December 2008.
Precipitation amounts to
95 mm, distributed over 12 days.
The day lasts on average 9 hours and 30 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 3.5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
11.1 kph.
The average sea temperature is of
15.7 °C. Therefore, the sea is cold for swimming.