Kajaani climate — normals and trends
Kajaani (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.0 °C and it receives 641 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (16.0 °C on average) and the coldest is January (-10.7 °C). Rainfall peaks in July.
Kajaani averages 186 frost days, 0 hot days (≥ 30 °C) and 135 rainy days per year.
Kajaani has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 196 to 176 per year over the period.
The hottest day of the period reached 32.0 °C (on 29 July 2010) and the coldest -41.8 °C (on 7 January 1985).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
KajaaniKainuu
- coords
- 64.23°, 27.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.0°C
Average daily high
4.9°C
Average daily low
-1.1°C
Annual rainfall
641mm
Sunshine / day
6.5h
Mean relative humidity
82%
Average peak wind
16.1km/h
Seasonal range
26.7°C
Frost days (< 0 °C)
186 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
155.9 cm
Average feels-like high
1.5 °C
Average feels-like low
-4.8 °C
Average peak gust
32.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.26 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
32.0 °C
29 July 2010
Coldest day
-41.8 °C
7 January 1985
Wettest day
39 mm
8 August 2012
Windiest day
48.0 km/h
26 December 1992
Strongest gust
99.4 km/h
26 December 1992
Hottest feels-like
32.9 °C
29 July 2010
Coldest feels-like
-47.2 °C
7 January 1985
Snowiest day
15.3 cm
24 April 2023
Sunniest day
19.9 h
13 June 2006
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -4.5 °C | +3.6 °C | 44 mm | +8 mm |
| Feb | -3.6 °C | +3.9 °C | 21 mm | -8 mm |
| Mar | 1.7 °C | +3.9 °C | 40 mm | +8 mm |
| Apr | 6.0 °C | +2.0 °C | 13 mm | -24 mm |
| May | 10.9 °C | +0.1 °C | 69 mm | +21 mm |
| Jun | 15.7 °C | -0.9 °C | 95 mm | +22 mm |
| Jul | 23.2 °C | +3.9 °C | 51 mm | -33 mm |
| Aug | 18.2 °C | +1.2 °C | 69 mm | -15 mm |
| Sep | 15.4 °C | +4.1 °C | 88 mm | +20 mm |
| Oct | 6.7 °C | +2.4 °C | 61 mm | +5 mm |
| Nov | 1.4 °C | +2.8 °C | 72 mm | +21 mm |
| Dec | -1.4 °C | +3.9 °C | 77 mm | +34 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Kajaani?
Kajaani has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.0 °C and it receives 641 mm of precipitation per year.
What is the hottest day ever recorded in Kajaani?
The hottest day measured in Kajaani between 1940 and 2025 was 29 July 2010, reaching 32.0 °C.
What is the coldest day in Kajaani?
The coldest day measured in Kajaani between 1940 and 2025 was 7 January 1985, at -41.8 °C.
Does it snow in Kajaani?
Yes. Kajaani gets on average 155.9 cm of snow per year and has around 186 frost days.
Has the climate of Kajaani warmed?
Yes: Kajaani warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kajaani?
The wettest day measured in Kajaani between 1940 and 2025 was 8 August 2012, with 39 mm of rain in 24 hours.
What was the windiest day in Kajaani?
The windiest day measured in Kajaani between 1940 and 2025 was 26 December 1992, with winds reaching 48.0 km/h.
What is the warmest month in Kajaani?
The warmest month in Kajaani is July (16.0 °C on average); the coldest is January (-10.7 °C).
How much does it rain in Kajaani?
Kajaani receives on average 641 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Kajaani?
Kajaani gets on average 6.5 hours of sunshine per day, roughly 2,373 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kajaani?
The heaviest 24-hour snowfall measured in Kajaani between 1940 and 2025 was 24 April 2023, with 15.3 cm.
Are there tropical nights in Kajaani?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kajaani.
What was the most extreme apparent temperature in Kajaani?
In Kajaani, between 1940 and 2025, the highest apparent temperature reached 32.9 °C on 29 July 2010, and the lowest was -47.2 °C on 7 January 1985.
Compare Kajaani with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kajaani