Kiiminki climate — normals and trends
Kiiminki (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.2 °C and it receives 619 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 (16.2 °C on average) and the coldest is January (-10.3 °C). Rainfall peaks in August.
Kiiminki averages 187 frost days, 0 hot days (≥ 30 °C) and 125 rainy days per year.
Kiiminki has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 197 to 177 per year over the period.
The hottest day of the period reached 32.2 °C (on 20 July 1970) and the coldest -40.5 °C (on 6 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
KiiminkiNorth Ostrobothnia
- coords
- 65.13°, 25.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.2°C
Average daily high
5.5°C
Average daily low
-1.3°C
Annual rainfall
619mm
Sunshine / day
7.0h
Mean relative humidity
80%
Average peak wind
16.0km/h
Seasonal range
26.5°C
Frost days (< 0 °C)
187 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
147.3 cm
Average feels-like high
2.0 °C
Average feels-like low
-5.0 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.20 · 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
32.2 °C
20 July 1970
Coldest day
-40.5 °C
6 January 1985
Wettest day
41 mm
8 August 1980
Windiest day
43.4 km/h
26 December 1992
Strongest gust
102.2 km/h
4 February 1971
Hottest feels-like
33.5 °C
31 July 2025
Coldest feels-like
-45.8 °C
6 January 1985
Snowiest day
16.5 cm
9 April 1949
Sunniest day
20.7 h
28 June 1941
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 | -4.6 °C | +2.9 °C | 46 mm | +8 mm |
| Feb | -2.8 °C | +4.2 °C | 36 mm | +4 mm |
| Mar | 1.6 °C | +3.6 °C | 37 mm | +5 mm |
| Apr | 6.1 °C | +1.9 °C | 14 mm | -22 mm |
| May | 11.6 °C | 0.0 °C | 53 mm | +7 mm |
| Jun | 15.8 °C | -1.4 °C | 99 mm | +39 mm |
| Jul | 24.1 °C | +4.0 °C | 76 mm | +1 mm |
| Aug | 18.3 °C | +0.5 °C | 77 mm | -3 mm |
| Sep | 16.0 °C | +4.0 °C | 98 mm | +35 mm |
| Oct | 7.7 °C | +2.9 °C | 68 mm | +13 mm |
| Nov | 0.3 °C | +1.3 °C | 67 mm | +16 mm |
| Dec | -1.5 °C | +3.3 °C | 64 mm | +16 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 Kiiminki?
Kiiminki has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.2 °C and it receives 619 mm of precipitation per year.
What is the hottest day ever recorded in Kiiminki?
The hottest day measured in Kiiminki between 1940 and 2025 was 20 July 1970, reaching 32.2 °C.
What is the coldest day in Kiiminki?
The coldest day measured in Kiiminki between 1940 and 2025 was 6 January 1985, at -40.5 °C.
Does it snow in Kiiminki?
Yes. Kiiminki gets on average 147.3 cm of snow per year and has around 187 frost days.
Has the climate of Kiiminki warmed?
Yes: Kiiminki warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kiiminki?
The wettest day measured in Kiiminki between 1940 and 2025 was 8 August 1980, with 41 mm of rain in 24 hours.
What was the windiest day in Kiiminki?
The windiest day measured in Kiiminki between 1940 and 2025 was 26 December 1992, with winds reaching 43.4 km/h.
What is the warmest month in Kiiminki?
The warmest month in Kiiminki is July (16.2 °C on average); the coldest is January (-10.3 °C).
How much does it rain in Kiiminki?
Kiiminki receives on average 619 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Kiiminki?
Kiiminki gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kiiminki?
The heaviest 24-hour snowfall measured in Kiiminki between 1940 and 2025 was 9 April 1949, with 16.5 cm.
Are there tropical nights in Kiiminki?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kiiminki.
What was the most extreme apparent temperature in Kiiminki?
In Kiiminki, between 1940 and 2025, the highest apparent temperature reached 33.5 °C on 31 July 2025, and the lowest was -45.8 °C on 6 January 1985.
Compare Kiiminki with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kiiminki