The city is located in central Finland, on the coast of the Gulf of Bothnia.
, when it doesn't get completely dark even at midnight, occur from 2 May to 12 August.
, there can be cold spells of arctic origin. The coldest record is -38.6 °C (-37.5 °F) and was set in February 1966.
During cold periods, the sea can freeze. It is useful to recall that sea water freezes at about -2 °C (28.5 °F).
, also due to the length of the days, the sunshine amount is quite good, and definitely better than in Norway. Sometimes there can be short hot periods. The highest record is 33.7 °C (92.7 °F) and was set in July 2018.
, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.
. Here are the average temperatures.
January is generally a very cold month. The average temperature is of
-5 °C, with a minimum of
-8.1 °C and a maximum of
-2 °C.
On the coldest nights of the month, the temperature usually drops to around
-22.5 °C. However, it dropped to
-37 °C in January 1999.
On the warmest days of the month, the temperature usually reaches around
4.5 °C. However, it reached
7.7 °C in January 2020.
Precipitation amounts to
40 mm, distributed over 10 days.
The day lasts on average 6 hours and 0 minutes. So the days are short.
There is an average of 1 hour of sunshine per day. So, the sun shines 16% of the time.
The average humidity is 89%. Hence, the air is normally humid.
The average wind speed is of
12.7 kph.
The average sea temperature is of
1.4 °C. Therefore, the sea is very cold for swimming.
February, the coldest month of the year, is generally a freezing cold month. The average temperature is of
-5.7 °C, with a minimum of
-9.1 °C and a maximum of
-2.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-22 °C. However, it dropped to
-31 °C in February 2011.
On the warmest days of the month, the temperature usually reaches around
4.5 °C. However, it reached
8 °C in February 2017.
Precipitation amounts to
30 mm, distributed over 8 days.
The day lasts on average 8 hours and 50 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
12.3 kph.
The average sea temperature is of
0.3 °C. Therefore, the sea is very cold for swimming.
March is generally a very cold month. The average temperature is of
-2.3 °C, with a minimum of
-6 °C and a maximum of
1.4 °C.
On the coldest nights of the month, the temperature usually drops to around
-18 °C. However, it dropped to
-26.3 °C in March 2006.
On the warmest days of the month, the temperature usually reaches around
8 °C. However, it reached
14.5 °C in March 2007.
Precipitation amounts to
30 mm, distributed over 7 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of
13 kph.
The average sea temperature is of
0.1 °C. Therefore, the sea is very cold for swimming.
April is generally a cold month. The average temperature is of
3.2 °C, with a minimum of
-0.9 °C and a maximum of
7.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-7.5 °C. However, it dropped to
-16 °C in April 2018.
On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
22.5 °C in April 2019.
Precipitation amounts to
25 mm, distributed over 7 days.
The day lasts on average 15 hours and 5 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
12.7 kph.
The average sea temperature is of
0.9 °C. Therefore, the sea is very cold for swimming.
May is generally a mild month. The average temperature is of
8.9 °C, with a minimum of
4.1 °C and a maximum of
13.6 °C.
On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-6.4 °C in May 2007.
On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
28.7 °C in May 2013.
Precipitation amounts to
40 mm, distributed over 7 days.
The day lasts on average 18 hours and 10 minutes. So the days are very long.
There are on average 9 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 66%.
The average wind speed is of
13.2 kph.
The average sea temperature is of
3.1 °C. Therefore, the sea is very cold for swimming.
June is generally a mild month. The average temperature is of
13.6 °C, with a minimum of
9 °C and a maximum of
18.1 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-2.3 °C in June 2004.
On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
31.8 °C in June 2011.
Precipitation amounts to
55 mm, distributed over 8 days.
The day lasts on average 20 hours and 10 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 10 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 67%.
The average wind speed is of
12.4 kph.
The average sea temperature is of
7.9 °C. Therefore, the sea is very cold for swimming.
July, the warmest month of the year, is generally a very mild month. The average temperature is of
16.9 °C, with a minimum of
12.5 °C and a maximum of
21.2 °C.
On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
0 °C in July 2020.
On the warmest days of the month, the temperature usually reaches around
27.5 °C. However, it reached
33.7 °C in July 2018.
Precipitation amounts to
70 mm, distributed over 8 days.
The day lasts on average 19 hours and 0 minutes. So the days are very long.
There are on average 9 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
11.1 kph.
The average sea temperature is of
13.6 °C. Therefore, the sea is very cold for swimming.
August is generally a very mild month. The average temperature is of
15.5 °C, with a minimum of
11.3 °C and a maximum of
19.7 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
1.9 °C in August 2008.
On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
32 °C in August 2014.
Precipitation amounts to
70 mm, distributed over 10 days.
The day lasts on average 16 hours and 0 minutes. So the days are long.
There are on average 7 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
10.5 kph.
The average sea temperature is of
15.2 °C. Therefore, the sea is cold for swimming.
September is generally a mild month. The average temperature is of
10.6 °C, with a minimum of
6.8 °C and a maximum of
14.4 °C.
On the coldest nights of the month, the temperature usually drops to around
-1.5 °C. However, it dropped to
-5 °C in September 1998.
On the warmest days of the month, the temperature usually reaches around
21 °C. However, it reached
25.1 °C in September 2019.
Precipitation amounts to
50 mm, distributed over 9 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
The average sea temperature is of
12.3 °C. Therefore, the sea is very cold for swimming.
October is generally a quite cold month. The average temperature is of
4.8 °C, with a minimum of
2 °C and a maximum of
7.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-7 °C. However, it dropped to
-20.4 °C in October 1992.
On the warmest days of the month, the temperature usually reaches around
13 °C. However, it reached
19 °C in October 2018.
Precipitation amounts to
65 mm, distributed over 10 days.
The day lasts on average 9 hours and 40 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
11.8 kph.
The average sea temperature is of
8.4 °C. Therefore, the sea is very cold for swimming.
November is generally a cold month. The average temperature is of
0.2 °C, with a minimum of
-2 °C and a maximum of
2.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-12 °C. However, it dropped to
-23.6 °C in November 2010.
On the warmest days of the month, the temperature usually reaches around
8 °C. However, it reached
12.6 °C in November 2015.
Precipitation amounts to
50 mm, distributed over 11 days.
The day lasts on average 6 hours and 40 minutes. So the days are short.
There are on average 1.5 hours of sunshine per day. So, the sun shines 20% of the time.
The average humidity is 91%. Hence, the air is normally humid.
The average wind speed is of
12.6 kph.
The average sea temperature is of
5.1 °C. Therefore, the sea is very cold for swimming.
December is generally a very cold month. The average temperature is of
-2.8 °C, with a minimum of
-5.6 °C and a maximum of
0 °C.
On the coldest nights of the month, the temperature usually drops to around
-17 °C. However, it dropped to
-30.1 °C in December 2002.
On the warmest days of the month, the temperature usually reaches around
5.5 °C. However, it reached
8.7 °C in December 2015.
Precipitation amounts to
50 mm, distributed over 11 days.
The day lasts on average 4 hours and 55 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 0.5 hours of sunshine per day. So, the sun shines 14% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is of
12.8 kph.
The average sea temperature is of
2.9 °C. Therefore, the sea is very cold for swimming.