The climate of Lemnos, an island of the Northern Aegean Sea, belonging to the group of the
, with relatively mild, rainy winters and hot, sunny summers. The island is not as warm as the southern Greek islands, it is windy, and in winter, it is subject to cold air outbreaks from the Balkan Peninsula.
follows the Mediterranean pattern, so it's more frequent between November and March, and it's not abundant, in fact, it does not reach 500 millimeters (20 inches) per year. In summer, the rains are very rare, in the form of short downpour or thunderstorm. No wonder the island's landscape is arid.
, from December to mid-March, is not so mild: there are many days with highs below 10 °C (50 °F) and sometimes even below 5 °C (41 °F), and with a moderate or even strong wind. Every now and then, it can get very cold and it can even snow, and there may be slight frosts at night. In March 1987, the temperature dropped to -6 °C (21 °F).
Rainfall is quite frequent as well. There are also mild days, with highs around 15/18 °C (59/64 °F).
, from mid-March to May, is mild, but with a few periods a bit cold, windy and rainy, which gradually become less frequent.
, from June to August, is hot and sunny, with rare rains. Typically, the maximum temperatures hover around 28/32 °C (82/90 °F), and there's a wind from the north, the
, which blows with a certain intensity in periods of a few days, though less than in the Cyclades. However, there may be periods of intense heat, with maximum temperatures reaching or exceeding 35 °C (95 °F).
, from September to November, is pleasantly warm at first, then gradually becomes milder. The rains gradually become more frequent, although there are entire weeks without rain still in October. In November, the first days a bit cold and windy begin to occur, and sometimes also in October.
in Lemnos is very good in summer, and also in May, when clear skies prevail, while in the rest of the year, there are both sunny periods and periods when the sky is cloudy.
is still cold in May and cool in June, while it becomes acceptable for swimming from July to September, and reaches a peak in August.
to travel to Lemnos for a beach holiday is the summer, from June to August. In June, and sometimes in early July, there may be some cool evenings, so it's better to bring a sweatshirt for the evening.
In May, not only the sea is cold, but also some days can be a bit cool, 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, June and September.
. Here are the average temperatures.
January, the coldest month of the year, is generally a quite mild month. The average temperature is of
7.4 °C, with a minimum of
4.1 °C and a maximum of
10.8 °C.
On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-5.4 °C in January 2006.
On the warmest days of the month, the temperature usually reaches around
16.5 °C. However, it reached
19.2 °C in January 2010.
Precipitation amounts to
65 mm, distributed over 10 days.
The day lasts on average 9 hours and 40 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
18.1 kph.
The average sea temperature is of
14 °C. Therefore, the sea is very cold for swimming.
February is generally a quite mild month. The average temperature is of
7.9 °C, with a minimum of
4.3 °C and a maximum of
11.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-5.8 °C in February 1992.
On the warmest days of the month, the temperature usually reaches around
17.5 °C. However, it reached
20 °C in February 2016.
Precipitation amounts to
50 mm, distributed over 9 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
18.5 kph.
The average sea temperature is of
14 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
9.9 °C, with a minimum of
6.1 °C and a maximum of
13.7 °C.
On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-3 °C in March 1996.
On the warmest days of the month, the temperature usually reaches around
19 °C. However, it reached
21.2 °C in March 2005.
Precipitation amounts to
50 mm, distributed over 9 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
17.6 kph.
The average sea temperature is of
14 °C. Therefore, the sea is very cold for swimming.
April is generally a mild month. The average temperature is of
13.1 °C, with a minimum of
8.8 °C and a maximum of
17.4 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-2 °C in April 2003.
On the warmest days of the month, the temperature usually reaches around
22.5 °C. However, it reached
27 °C in April 2018.
Precipitation amounts to
40 mm, distributed over 9 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
14 kph.
The average sea temperature is of
15 °C. Therefore, the sea is cold for swimming.
May is generally a very mild month. The average temperature is of
17.9 °C, with a minimum of
13.1 °C and a maximum of
22.7 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
3 °C in May 1995.
On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
31.4 °C in May 2001.
Precipitation amounts to
25 mm, distributed over 7 days.
The day lasts on average 14 hours and 25 minutes. So the days are long.
There are on average 9 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 70%.
The average wind speed is of
12.9 kph.
The average sea temperature is of
18 °C. Therefore, the sea is cold for swimming.
June is generally a warm to hot month. The average temperature is of
22.7 °C, with a minimum of
17.5 °C and a maximum of
27.8 °C.
On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
9 °C in June 1997.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
36 °C in June 1991.
Precipitation amounts to
15 mm, distributed over 5 days.
The day lasts on average 15 hours and 0 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 73% of the time.
The average humidity is 63%.
The average wind speed is of
12.6 kph.
The average sea temperature is of
22 °C. Therefore, the sea is cool for swimming.
July is generally a warm to hot month. The average temperature is of
25.5 °C, with a minimum of
20.7 °C and a maximum of
30.3 °C.
On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
12.6 °C in July 1998.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
39.4 °C in July 2007.
Precipitation amounts to only
9 mm, distributed over 2 days.
The day lasts on average 14 hours and 40 minutes. So the days are long.
There are on average 12 hours of sunshine per day. So, the sun shines 82% of the time.
The average humidity is 59%.
The average wind speed is of
15.4 kph.
The average sea temperature is of
23 °C. Therefore, the sea can be considered barely acceptable for swimming.
August, the hottest month of the year, is generally a warm to hot month. The average temperature is of
25.8 °C, with a minimum of
21.3 °C and a maximum of
30.2 °C.
On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
12 °C in August 1995.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37.1 °C in August 2012.
Precipitation amounts to only
7 mm, distributed over 2 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 11 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 60%.
The average wind speed is of
16.8 kph.
The average sea temperature is of
24 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm month. The average temperature is of
21.4 °C, with a minimum of
16.9 °C and a maximum of
25.8 °C.
On the coldest nights of the month, the temperature usually drops to around
11 °C. However, it dropped to
8 °C in September 1992.
On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
35 °C in September 2015.
Precipitation amounts to
25 mm, distributed over 3 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 67%.
The average wind speed is of
14.9 kph.
The average sea temperature is of
23 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a very mild month. The average temperature is of
16.8 °C, with a minimum of
12.9 °C and a maximum of
20.8 °C.
On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
2 °C in October 2011.
On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
32 °C in October 1991.
Precipitation amounts to
45 mm, distributed over 7 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
16 kph.
The average sea temperature is of
20 °C. Therefore, the sea is very cool for swimming.
November is generally a mild month. The average temperature is of
12.7 °C, with a minimum of
8.9 °C and a maximum of
16.5 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-2 °C in November 1995.
On the warmest days of the month, the temperature usually reaches around
21.5 °C. However, it reached
25 °C in November 2008.
Precipitation amounts to
75 mm, distributed over 10 days.
The day lasts on average 10 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
16.2 kph.
The average sea temperature is of
17 °C. Therefore, the sea is cold for swimming.
December is generally a mild month. The average temperature is of
9.1 °C, with a minimum of
5.7 °C and a maximum of
12.4 °C.
On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-3.4 °C in December 1992.
On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
21 °C in December 2008.
Precipitation amounts to
85 mm, distributed over 12 days.
The day lasts on average 9 hours and 25 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
18.1 kph.
The average sea temperature is of
15 °C. Therefore, the sea is cold for swimming.