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Climate in Finland


Average weather, temperature, rainfall, sunshine

Flag - Finland

Map - Finland

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The climate of Finland, a Northern European country, is of the continental type, cold and with a long winter in the north and the interior, and relatively milder (ie of Baltic type) along the western and southern coasts.
However, even in the south there are a few months with sub-freezing temperatures and normally snow-covered ground. Summer is generally mild and moderately rainy.
Compared to the Scandinavian countries, Finland has a colder climate because of the proximity to Russia.

Across the country, precipitation is not very abundant, and it ranges from 400 millimeters (15.5 inches) per year in the extreme north-east, to 650 mm (25.5 in) in the east and south, to 700 mm (27.5 in) in the south-western tip (see Turku); however, it is quite frequent and well distributed throughout the year.
The rainiest periods are summer and autumn. In the center-south, August is generally a bit rainier than July. The least rainy (and snowy) period is the one that runs from February to April. In winter, light snow often falls, which may not even be counted in the statistics (if it does not reach a minimum amount of equivalent rain).

Finland is not a very sunny country. In winter the sun is rarely seen, also because the days are very short, while in summer it shines for a good number of hours, also because the days are very long.
On average, there are around 1,550 hours of sunshine per year in Lapland, 1,800 in the south, and up to 1,900 on the west coast, where there are around 10 hours of sunshine per day in June and July.

Finland is largely a flat country. However, in the north, there are hills, and in the extreme north-west, on the border with Norway, even a mountain, Halti, 1,324 meters (4,344 feet) high.

Index


  • The seasons
  • Lapland - Rovaniemi
  • Center-south - Oulu, Helsinki
  • When to go
  • What to pack
  • Climate data

The seasons



Winter is long and very cold in much of Finland. It lasts more than four months even in Helsinki, which lies in the far south. Here, the temperature remains almost constantly around or below freezing (0 °C or 32 °F) from mid-November to late March.
As you head north and east, winter gets even colder and longer. The numerous lakes that are located in Finland are frozen, and even the sea can sometimes freeze (more often in the Gulf of Bothnia, but sometimes, even in the port of Helsinki and in the eastern part of the Gulf of Finland), and it is necessary to resort to icebreakers to allow maritime traffic to continue.
The average temperature in January and February is around -13 °C (8.5 °F) in the north, in Lapland, around -8.5 °C (16.5 °F) in Kuopio, in the central inland areas, around -4.5 °C (24 °F) in Helsinki, on the south coast, while it is only around -1.5 °C (29.5 °F) in the mildest areas of the southwest (see the Åland islands).

Anyway, during winter, weather conditions can vary a lot. When Finland is affected by cold air masses from neighbouring Russia, the temperature drops below -20 °C (-4 °F). On colder periods, the temperature can fall as low as -50 °C (-58 °F) in the far north (Lapland). In January 1987, it reached -36 °C (-33 °F) even in the "southern" city of Helsinki.
On the contrary, when the country is reached by mild winds from the Atlantic Ocean, the temperature can slightly exceed the freezing point in the center and south.

The thaw usually occurs in late March in the south and during the month of April in the center-north. In autumn, snow normally begins to fall in October in Lapland, and in November in the south.

Summer in Finland is mild or pleasantly warm, although it can sometimes get cold at night. The rains are quite frequent. Average temperatures range from 14/15 °C (57/59 °F) in the north to 18 °C (64.5 °F) in the south and in Helsinki.
However, there can sometimes be short, hot periods. The highest records are around 31/32 °C (88/90 °F) in Lapland and 33/34 °C (91/93 °F) in the center-south.

Lapland


Lapland, where is located
Lapland, where is located
In Lapland, the northernmost part of Finland, the climate is cold for most of the year, with a short and intense summer. Here, the winter (which in Nordic countries is the season when the temperature remains below freezing) lasts seven months, from October to April. The days are very short from November to January, and in December, you almost never see the sun, also because of the cloud cover.
Summer is mild, with some warm days, while at night, it can get cold. July is the warmest month. In summer, the days are very long: in June and July, there's the midnight sun, while in August, even though the days begin to shorten, it never gets completely dark. The temperature steadily exceeds freezing only in the three summer months, from June to August. In this season, the vegetation grows rapidly, to take advantage of the short period of mild temperatures, while mosquitoes literally invade the landscape.

Rovaniemi

Climate chart - Rovaniemi
Rovaniemi, the capital of Lapland, is practically located at the polar circle, in the southern part of the region. The average temperature ranges from -12 °C (10.5 °F) in January and February to 15.5 °C (60 °F) in July.
The coldest record is -47.5 °C (-53.5 °F) and was set in January 1999.
During summer, occasionally there are periods when the temperature can reach 28/30 °C (82/86 °F), but in other periods, it can drop below 5 °C (41 °F) at night.
In Rovaniemi, precipitation amounts to 555 mm (21.5 in) per year. The wettest season is summer.
The sun in Rovaniemi does not set at all from around June 7 to July 6. On the contrary, in winter, there is no period when the sun never rises (around December 22, the sun is slightly above the horizon for about 2 hours and a quarter). However, given the briefness of the days and the frequency of cloud cover, in winter the sun is almost never seen, while in June and July, it shines roughly 37% of the time. Here are the average sunshine hours per day.

Rovaniemi

Center-south



In the center-south, winter is less cold than in Lapland; however, it remains freezing, with averages well below 0 °C (32 °F). The Gulf of Bothnia, especially in the northern part, is not able to temper the climate by much because in winter it is often frozen. Summer is mild or pleasantly warm, and a little warmer than in the north, especially at night.

Oulu

Climate chart - Oulu
In Oulu, on the coast of the northern part of the Gulf of Bothnia, 170 km (105 mi) south of Rovaniemi, the average temperature of February is -8.7 °C (16.3 °F), that of July of 16.7 °C (62 °F). Here, the temperature dropped to -37.5 °C (-35.5 °F) in January 1987.
In Oulu, 520 mm (20.5 in) of rain or snow fall per year. As usual, precipitation is well distributed throughout the year, at least as regards to the frequency, while July and August are the months when the rains are more abundant.
In Oulu, the sea temperature is near the freezing point from January to April (remember that the sea freezes at about -2 °C or 28.5 °F). In summer, the sea remains cold.

Further south, in Kuopio (in the interior), the climate is similar to that of Oulu, while in Vaasa (on the coast), it is slightly milder.
Further south, in Tampere, located in the inland southern area, the average temperature ranges from -6 °C (21 °F) in February to 17 °C (62.5 °F) in July.

Helsinki

Climate chart - Helsinki
The capital, Helsinki, is located in the southernmost part of the country. The average temperature ranges from -4 °C (25 °F) in February to 18 °C (64.5 °F) in July. However, the temperature remains around or below freezing for a few months every year.
Precipitation amounts to 675 mm (26.5 in) per year.
The sun in Helsinki is rarely seen from November to January, while from May to August, it shines about half the time (compared to the length of the day).
The sea in Helsinki is a little less cold than in the Gulf of Bothnia, but as mentioned, it can sometimes freeze here as well. In summer, the sea remains cold; however, it reaches 17 °C (63 °F) in August.

Helsinki

In Turku, on the coast exposed to the south-west, the climate is similar to that of Helsinki.

When to go



Summer, from June to August, is the best season to visit Finland. Temperatures are generally good for outdoor activities, hovering around 18/22 °C (64/72 °F), at least when it doesn't rain (in the evening or during rainy days it can be cooler), while it rarely gets hot. However, sometimes at night it can get cold, especially in Lapland.
The days are very long, especially in June, when you can admire the "white nights" in the south, and the midnight sun in the north. June is not as rainy as July, but it's a bit cooler.
It is worth while to recall that in Nordic countries the summer generally begins to decline by mid-August: the days get shorter (even though they remain long), and are both a slight decrease in temperature and an increase in the number of rainy days.
The sun in Finland does not shine very often, even in summer, when there can be some rainy or cloudy days, but at least, the sky is not always overcast in this season, and the sun often peeks through the clouds.

If you want to visit Finland in its winter appearance, the best month is March, when the country is still covered with snow (at least in the center-north, while in the south it depends on the years), but the temperature is milder, and the days are longer than in the previous months.
Easter can be a good period, even when it is advanced, to go cross-country skiing in the north and to take advantage of the longer days, while hoping for the sun to come out.
In the period from December to February, in addition to very short days (in the Christmas period, the sun doesn't even rise in the north), sometimes, there can be a bitter cold, even in the south, especially in January and February. In this period, however, you can experience the polar nights in the north and go in search of the northern lights (Aurora borealis). In February, the days are a bit longer.

What to pack



In winter: bring cold weather clothing, synthetic, thermal long underwear, a fleece, a parka, a wind jacket, gloves, and warm boots.
In summer: bring clothes for spring and autumn, being ready to add or remove the outer layer, a T-shirt, but also long pants, a jacket, a sweatshirt or sweater, and a raincoat or umbrella.

Climate data - Finland


Temperatures: °C, Precipitation: mm
Aland
Aland, location on the map
Aland, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-4-6-40491211731-2
Max temp.103813172120151053
Precip.503535303555557060756560
Prec. days1088768799121313
Humidity87%86%81%76%72%74%76%79%83%85%88%88%
Day length79121517191816131076
Sun hours134710101085311
Sea temp32136111617151185

Hanko
Hanko, location on the map
Hanko, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-4-6-3161014141051-2
Max temp.0-1271318212015952
Precip.554035303550508050757060
Prec. days1198768799111213
Humidity87%88%86%82%77%76%80%82%83%85%86%88%
Day length79121517191816131086
Sea temp32136111617151185

Helsinki
Helsinki, location on the map
Helsinki, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-6-7-406101412830-4
Max temp.-1-2291519222116941
Precip.604535353560558055757565
Prec. days12987797109101212
Humidity88%86%77%68%63%67%70%75%80%84%88%88%
Day length79121517191816131076
Sun hours134799975311
Sea temp2112591517141073

Kilpisjärvi (500 meters)
Kilpisjärvi, location on the map
Kilpisjärvi, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-17-17-14-8-14873-3-10-15
Max temp.-8-8-41612161492-3-6
Precip.504045303050705035353550
Prec. days1110977810889911
Day length28121622242318131040

Kuopio
Kuopio, location on the map
Kuopio, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-11-12-8-2510141282-3-8
Max temp.-5-507141922201361-3
Precip.504035305075907550555055
Prec. days121097910111110111011
Humidity90%88%79%70%63%65%70%75%82%87%91%91%
Day length69121518201916131075

Lahti
Lahti, location on the map
Lahti, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-9-10-7-148121061-2-6
Max temp.-3-329162023211582-1
Precip.453530304065707055656050
Prec. days129878910109111112
Humidity87%85%81%75%67%67%73%80%86%87%90%89%
Day length79121518191816131076

Muonio (240 meters)
Muonio, location on the map
Muonio, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-18-17-13-6061073-4-11-16
Max temp.-9-9-2310161916102-4-7
Precip.302525304065757050454035
Prec. days99778111211991011
Day length4812162124231713960

Oulu
Oulu, location on the map
Oulu, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-12-12-9-339121060-4-9
Max temp.-5-506131821191360-3
Precip.303025254050756545504040
Prec. days9876881010810109
Humidity88%86%80%71%65%65%71%75%81%87%90%90%
Day length58121519222016131064
Sun hours1247910974210
Sea temp10-1027121412853

Rovaniemi
Rovaniemi, location on the map
Rovaniemi, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-17-17-13-6171084-2-8-13
Max temp.-7-7-1512172118124-2-5
Precip.403030304560756055454540
Prec. days109889101099101211
Humidity90%89%81%72%66%64%70%77%84%92%94%92%
Day length4812162024211713963
Sun hours024789864210

Sodankylä
Sodankylä, location on the map
Sodankylä, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-17-17-13-6171083-3-9-14
Max temp.-8-8-2411172017113-3-6
Precip.353030304060755550454040
Prec. days10887811119991010
Humidity87%85%78%70%65%64%70%76%83%89%91%89%
Day length4912162024221713951
Sun hours024789964210

Tampere
Tampere, location on the map
Tampere, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-9-9-6-149121162-2-6
Max temp.-3-329151922201572-1
Precip.403030304065706555555040
Prec. days10877791010810910
Humidity91%88%79%68%62%66%70%75%82%88%92%93%
Day length69121518191816131077

Tornio
Tornio, location on the map
Tornio, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-13-14-10-428121050-6-10
Max temp.-5-6-15121721181350-3
Precip.554540354555606565607060
Prec. days1198788989101212
Day length58121619232117131063
Sea temp10-1038131512852

Turku
Turku, location on the map
Turku, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-6-8-5059131273-1-5
Max temp.-1-2291520232115930
Precip.604040353560757560757070
Prec. days11988799109111212
Humidity91%88%80%70%63%67%70%75%81%87%91%91%
Day length79121517191816131076
Sun hours134799975311
Sea temp32136111617151185

Vaasa
Vaasa, location on the map
Vaasa, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-8-9-6-149121172-2-6
Max temp.-2-2171418212014820
Precip.403030254055707050655050
Prec. days10877788109101111
Humidity89%87%81%73%66%67%73%78%82%87%91%90%
Day length69121518201916131075
Sun hours1346910974311
Sea temp100138141512853



See also the temperatures month by month

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 See also (cities or regions):
 Aland
 Hanko
 Helsinki
 Ivalo
 Joensuu
 Kajaani
 Kemi
 Kilpisjärvi
 Kuopio
 Others (expand)
 Kuusamo
 Lahti
 Muonio
 Nuorgam
 Oulu
 Pello
 Rovaniemi
 Sodankylä
 Tampere
 Tornio
 Turku
 Vaasa

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