, with relatively mild, rainy winters and warm, sunny summers. The island is not as warm as the southern Greek islands, it is windy, and in winter, it is subject to outbreaks of cold air from the Balkan Peninsula.
follows the Mediterranean pattern, in fact, it is more frequent from November to March, and it's not abundant, since it does not reach 400 millimeters (15.7 inches) per year. In summer, the rains are very rare, and occur in the form of short downpour or thunderstorm. The southern part of the island is drier than the northern one, and has a particularly arid landscape.
, from December to mid-March, is not so mild: there are many days with highs below 10 °C (50 °F) and with a moderate or even strong wind. Furthermore, every so often, it can get very cold, and it can even snow, although frosts almost never occur because of the influence of the sea.
However, there are also mild periods, with highs around 15/18 °C (59/64 °F).
The rains are quite frequent.
, from mid-March to May, is a pleasant season, mild and sunny, but some periods can be a bit cold, windy and rainy, which gradually become less frequent.
, from June to mid-September, is warm and sunny, with very few showers. Generally, the maximum temperature is below 30 °C (86 °F), and the temperature is almost always acceptable because of the prevailing wind, which blows from the north. The
blows with a certain intensity in periods of a few days, but less so than in the Cyclades. Very hot days are rare, sometimes, however, there can be short heat waves, in which the temperature can reach 37/38 °C (99/100 °F).
, from mid-September to November, is pleasantly warm at first, then gradually becomes milder. The rains gradually become more frequent, although there are long periods without rain still in October. In November, the first days a bit cold and windy can occur, and sometimes also in October.
in Skyros is very good in summer, and also in May and September, when clear skies prevail, 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.
to go to Skyros for a beach holiday is the summer, from June to mid-September. In June and September, and sometimes in early July, there can be some cool evenings, so it's better to bring a sweatshirt.
In May, not only the sea is cold, but there can also be some cool days, 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, to visit the castle or the Byzantine monastery, or to climb Mount Olympus, 400 meters (1,300 feet) high, the summer temperatures are generally acceptable, in fact, they are not too high, however, you can also go in May.
. Here are the average temperatures.
January is generally a mild month. The average temperature is of
9.5 °C, with a minimum of
7 °C and a maximum of
12.1 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-2 °C in January 2004.
On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
20 °C in January 2003.
Precipitation amounts to
55 mm, distributed over 7 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 76%. Hence, the air is normally humid.
The average sea temperature is of
15.1 °C. Therefore, the sea is cold for swimming.
February, the coldest month of the year, is generally a mild month. The average temperature is of
9.4 °C, with a minimum of
6.6 °C and a maximum of
12.3 °C.
On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-3.6 °C in February 2004.
On the warmest days of the month, the temperature usually reaches around
19 °C. However, it reached
23 °C in February 2004.
Precipitation amounts to
40 mm, distributed over 5 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 75%. Hence, the air is normally humid.
The average sea temperature is of
14.5 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
10.9 °C, with a minimum of
8 °C and a maximum of
13.9 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
0 °C in March 1998.
On the warmest days of the month, the temperature usually reaches around
20.5 °C. However, it reached
30.2 °C in March 2001.
Precipitation amounts to
45 mm, distributed over 5 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 75%. Hence, the air is normally humid.
The average sea temperature is of
14.5 °C. Therefore, the sea is very cold for swimming.
April is generally a mild month. The average temperature is of
14.2 °C, with a minimum of
10.9 °C and a maximum of
17.4 °C.
On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
0.4 °C in April 2004.
On the warmest days of the month, the temperature usually reaches around
23.5 °C. However, it reached
29 °C in April 1999.
Precipitation amounts to
25 mm, distributed over 4 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 72%. Hence, the air is normally humid.
The average sea temperature is of
15.4 °C. Therefore, the sea is cold for swimming.
May is generally a warm month. The average temperature is of
18.5 °C, with a minimum of
15 °C and a maximum of
21.9 °C.
On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
7.6 °C in May 2000.
On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
33.8 °C in May 1997.
Precipitation amounts to
10 mm, distributed over 2 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 70%.
The average sea temperature is of
18.1 °C. Therefore, the sea is cold for swimming.
June is generally a warm to hot month. The average temperature is of
23.1 °C, with a minimum of
19.5 °C and a maximum of
26.6 °C.
On the coldest nights of the month, the temperature usually drops to around
15 °C. However, it dropped to
12 °C in June 2000.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
36.8 °C in June 1996.
Precipitation amounts to only
5 mm, and all occurs in one day.
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 65%.
The average sea temperature is of
21.8 °C. Therefore, the sea is cool for swimming.
July, the warmest month of the year, is generally a warm to hot month. The average temperature is of
25 °C, with a minimum of
21.7 °C and a maximum of
28.2 °C.
On the coldest nights of the month, the temperature usually drops to around
17.5 °C. However, it dropped to
15 °C in July 1993.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
42.6 °C in July 2000.
Precipitation amounts to only
5 mm, and all occurs in one day.
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 64%.
The average sea temperature is of
23.9 °C. Therefore, the sea is warm enough for swimming.
August is generally a warm to hot month. The average temperature is of
25 °C, with a minimum of
22 °C and a maximum of
27.9 °C.
On the coldest nights of the month, the temperature usually drops to around
17.5 °C. However, it dropped to
14.4 °C in August 2001.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
37.8 °C in August 2002.
Precipitation amounts to only
5 mm, and all occurs in one day.
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 66%.
The average sea temperature is of
24.6 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm month. The average temperature is of
22 °C, with a minimum of
18.9 °C and a maximum of
25 °C.
On the coldest nights of the month, the temperature usually drops to around
14 °C. However, it dropped to
10 °C in September 1992.
On the warmest days of the month, the temperature usually reaches around
31.5 °C. However, it reached
36.8 °C in September 2000.
Precipitation amounts to
15 mm, distributed over 2 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 70%.
The average sea temperature is of
23.5 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a warm month. The average temperature is of
18.6 °C, with a minimum of
15.7 °C and a maximum of
21.5 °C.
On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
6.6 °C in October 1997.
On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
33.4 °C in October 1992.
Precipitation amounts to
25 mm, distributed over 4 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 74%. Hence, the air is normally humid.
The average sea temperature is of
21.1 °C. Therefore, the sea is cool for swimming.
November is generally a mild month. The average temperature is of
14.3 °C, with a minimum of
11.6 °C and a maximum of
17 °C.
On the coldest nights of the month, the temperature usually drops to around
6 °C. However, it dropped to
3.2 °C in November 2004.
On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
28.6 °C in November 2000.
Precipitation amounts to
60 mm, distributed over 6 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 77%. Hence, the air is normally humid.
The average sea temperature is of
18.4 °C. Therefore, the sea is very cool for swimming.
December is generally a mild month. The average temperature is of
10.7 °C, with a minimum of
8.4 °C and a maximum of
13.1 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
0 °C in December 1998.
On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
22 °C in December 1996.
Precipitation amounts to
90 mm, distributed over 8 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 77%. Hence, the air is normally humid.
The average sea temperature is of
16.3 °C. Therefore, the sea is cold for swimming.