The city is located in central Finland, near Lake Oulujärvi, and is the capital of the Kainuu region.
, when it doesn't get completely dark even at midnight, occur from April 28th to August 16th.
, there can be cold spells of arctic origin. The coldest record is -42.8 °C (-45 °F) and was set in February 1966.
, there can be short hot periods. The highest record is 34.5 °C (94.1 °F) and was set in July 2010.
, 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 freezing cold month. The average temperature is of
-9.9 °C, with a minimum of
-13.6 °C and a maximum of
-6.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-30 °C. However, it dropped to
-39 °C in January 2003.

On the warmest days of the month, the temperature usually reaches around
2.5 °C. However, it reached
6 °C in January 2020.

Precipitation amounts to
35 mm, distributed over 10 days.
The day lasts on average 5 hours and 30 minutes. So the days are short.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is of
9.6 kph.
February, the coldest month of the year, is generally a freezing cold month. The average temperature is of
-9.9 °C, with a minimum of
-14 °C and a maximum of
-5.8 °C.

On the coldest nights of the month, the temperature usually drops to around
-30 °C. However, it dropped to
-37.8 °C in February 2011.

On the warmest days of the month, the temperature usually reaches around
2.5 °C. However, it reached
5.6 °C in February 2002.

Precipitation amounts to
25 mm, distributed over 8 days.
The day lasts on average 8 hours and 35 minutes.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of
9.6 kph.
March is generally a freezing cold month. The average temperature is of
-5.3 °C, with a minimum of
-9.9 °C and a maximum of
-0.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-24 °C. However, it dropped to
-31.4 °C in March 2006.

On the warmest days of the month, the temperature usually reaches around
6.5 °C. However, it reached
13 °C in March 2007.

Precipitation amounts to
30 mm, distributed over 8 days.
The day lasts on average 11 hours and 55 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
10.8 kph.
April is generally a cold month. The average temperature is of
1.2 °C, with a minimum of
-3.4 °C and a maximum of
5.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-14.5 °C. However, it dropped to
-24.7 °C in April 1998.

On the warmest days of the month, the temperature usually reaches around
14.5 °C. However, it reached
20.5 °C in April 1998.

Precipitation amounts to
25 mm, distributed over 7 days.
The day lasts on average 15 hours and 20 minutes.
The average humidity is 70%.
The average wind speed is of
10.2 kph.
May is generally a quite mild month. The average temperature is of
7.6 °C, with a minimum of
2.3 °C and a maximum of
13 °C.

On the coldest nights of the month, the temperature usually drops to around
-5.5 °C. However, it dropped to
-9.6 °C in May 1999.

On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
28 °C in May 2014.

Precipitation amounts to
50 mm, distributed over 9 days.
The day lasts on average 18 hours and 35 minutes. So the days are very long.
The average humidity is 65%.
The average wind speed is of
10.9 kph.
June is generally a mild month. The average temperature is of
12.8 °C, with a minimum of
7.8 °C and a maximum of
17.9 °C.

On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-2.6 °C in June 2017.

On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
30.3 °C in June 2000.

Precipitation amounts to
60 mm, distributed over 10 days.
The day lasts on average 20 hours and 55 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 66%.
The average wind speed is of
10.6 kph.
July, the warmest month of the year, is generally a very mild month. The average temperature is of
16 °C, with a minimum of
11.1 °C and a maximum of
21 °C.

On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
0.6 °C in July 2006.

On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
34.5 °C in July 2010.

Precipitation amounts to
75 mm, distributed over 11 days.
The day lasts on average 19 hours and 30 minutes. So the days are very long.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
9.4 kph.
August is generally a mild month. The average temperature is of
13.9 °C, with a minimum of
9.4 °C and a maximum of
18.4 °C.

On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-1.9 °C in August 2014.

On the warmest days of the month, the temperature usually reaches around
25 °C. However, it reached
29.6 °C in August 2003.

Precipitation amounts to
75 mm, distributed over 11 days.
The day lasts on average 16 hours and 10 minutes. So the days are long.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
9.3 kph.
September is generally a mild month. The average temperature is of
8.9 °C, with a minimum of
5.1 °C and a maximum of
12.6 °C.

On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-7.2 °C in September 1993.

On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
23.4 °C in September 2004.

Precipitation amounts to
55 mm, distributed over 10 days.
The day lasts on average 12 hours and 55 minutes.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
10.3 kph.
October is generally a cold month. The average temperature is of
2.6 °C, with a minimum of
0 °C and a maximum of
5.1 °C.

On the coldest nights of the month, the temperature usually drops to around
-10 °C. However, it dropped to
-22.9 °C in October 1992.

On the warmest days of the month, the temperature usually reaches around
11.5 °C. However, it reached
15.5 °C in October 2005.

Precipitation amounts to
50 mm, distributed over 11 days.
The day lasts on average 9 hours and 35 minutes.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
November is generally a very cold month. The average temperature is of
-2.9 °C, with a minimum of
-5.4 °C and a maximum of
-0.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-17.5 °C. However, it dropped to
-29.3 °C in November 2002.

On the warmest days of the month, the temperature usually reaches around
6.5 °C. However, it reached
14.1 °C in November 1999.

Precipitation amounts to
40 mm, distributed over 11 days.
The day lasts on average 6 hours and 25 minutes. So the days are short.
The average humidity is 91%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
December is generally a freezing cold month. The average temperature is of
-6.9 °C, with a minimum of
-10.1 °C and a maximum of
-3.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-25.5 °C. However, it dropped to
-37.8 °C in December 2002.

On the warmest days of the month, the temperature usually reaches around
3 °C. However, it reached
7.3 °C in December 2006.

Precipitation amounts to
35 mm, distributed over 10 days.
The day lasts on average 4 hours and 20 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is of
10.2 kph.