Kerimäki climate — normals and trends
Kerimäki (Finland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.6 °C and it receives 631 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 (17.4 °C on average) and the coldest is January (-9.0 °C). Rainfall peaks in August.
Kerimäki averages 164 frost days, 0 hot days (≥ 30 °C) and 132 rainy days per year.
Kerimäki has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 180 to 148 per year over the period.
The hottest day of the period reached 32.0 °C (on 22 June 2021) and the coldest -36.5 °C (on 10 January 1987).
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
KerimäkiSouth Savo
- coords
- 61.91°, 29.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.6°C
Average daily high
6.2°C
Average daily low
1.0°C
Annual rainfall
631mm
Sunshine / day
6.8h
Mean relative humidity
82%
Average peak wind
17.4km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
164 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
145.5 cm
Average feels-like high
2.9 °C
Average feels-like low
-2.6 °C
Average peak gust
35.1 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
8.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.32 · 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
22 June 2021
Coldest day
-36.5 °C
10 January 1987
Wettest day
45 mm
8 July 2025
Windiest day
44.7 km/h
7 September 1977
Strongest gust
99.0 km/h
27 May 1986
Hottest feels-like
32.8 °C
26 June 2013
Coldest feels-like
-42.3 °C
10 January 1987
Snowiest day
14.2 cm
18 March 1961
Sunniest day
18.2 h
4 July 2012
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 | -2.0 °C | +4.7 °C | 60 mm | +21 mm |
| Feb | -3.1 °C | +3.3 °C | 12 mm | -20 mm |
| Mar | 2.5 °C | +4.0 °C | 40 mm | +7 mm |
| Apr | 6.7 °C | +2.1 °C | 48 mm | +11 mm |
| May | 12.2 °C | -0.3 °C | 84 mm | +39 mm |
| Jun | 17.5 °C | -0.6 °C | 83 mm | +15 mm |
| Jul | 24.1 °C | +3.7 °C | 84 mm | +6 mm |
| Aug | 18.6 °C | +0.3 °C | 62 mm | -19 mm |
| Sep | 16.2 °C | +3.7 °C | 47 mm | -13 mm |
| Oct | 7.6 °C | +1.8 °C | 51 mm | -7 mm |
| Nov | 3.5 °C | +3.4 °C | 61 mm | +9 mm |
| Dec | 0.7 °C | +4.5 °C | 67 mm | +19 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 Kerimäki?
Kerimäki has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.6 °C and it receives 631 mm of precipitation per year.
What is the hottest day ever recorded in Kerimäki?
The hottest day measured in Kerimäki between 1940 and 2025 was 22 June 2021, reaching 32.0 °C.
What is the coldest day in Kerimäki?
The coldest day measured in Kerimäki between 1940 and 2025 was 10 January 1987, at -36.5 °C.
Does it snow in Kerimäki?
Yes. Kerimäki gets on average 145.5 cm of snow per year and has around 164 frost days.
Has the climate of Kerimäki warmed?
Yes: Kerimäki warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kerimäki?
The wettest day measured in Kerimäki between 1940 and 2025 was 8 July 2025, with 45 mm of rain in 24 hours.
What was the windiest day in Kerimäki?
The windiest day measured in Kerimäki between 1940 and 2025 was 7 September 1977, with winds reaching 44.7 km/h.
What is the warmest month in Kerimäki?
The warmest month in Kerimäki is July (17.4 °C on average); the coldest is January (-9.0 °C).
How much does it rain in Kerimäki?
Kerimäki receives on average 631 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Kerimäki?
Kerimäki gets on average 6.8 hours of sunshine per day, roughly 2,482 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kerimäki?
The heaviest 24-hour snowfall measured in Kerimäki between 1940 and 2025 was 18 March 1961, with 14.2 cm.
Are there tropical nights in Kerimäki?
Yes: Kerimäki has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kerimäki?
In Kerimäki, between 1940 and 2025, the highest apparent temperature reached 32.8 °C on 26 June 2013, and the lowest was -42.3 °C on 10 January 1987.
Compare Kerimäki with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kerimäki