Kauhajoki climate — normals and trends
Kauhajoki (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.8 °C and it receives 629 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 (16.3 °C on average) and the coldest is January (-7.3 °C). Rainfall peaks in August.
Kauhajoki averages 170 frost days, 0 hot days (≥ 30 °C) and 127 rainy days per year.
Kauhajoki has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 183 to 157 per year over the period.
The hottest day of the period reached 32.0 °C (on 29 July 2010) and the coldest -39.2 °C (on 7 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
KauhajokiSouth Ostrobothnia
- coords
- 62.43°, 22.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.8°C
Average daily high
7.3°C
Average daily low
0.2°C
Annual rainfall
629mm
Sunshine / day
7.3h
Mean relative humidity
81%
Average peak wind
16.0km/h
Seasonal range
23.6°C
Frost days (< 0 °C)
170 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
119.7 cm
Average feels-like high
4.1 °C
Average feels-like low
-3.4 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.27 · 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
-39.2 °C
7 January 1987
Wettest day
74 mm
6 August 1967
Windiest day
40.0 km/h
15 December 1975
Strongest gust
100.8 km/h
14 January 1984
Hottest feels-like
33.0 °C
29 July 2010
Coldest feels-like
-44.3 °C
7 January 1987
Snowiest day
14.9 cm
18 December 1966
Sunniest day
19.0 h
8 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 | -1.0 °C | +3.7 °C | 46 mm | +9 mm |
| Feb | -0.1 °C | +4.2 °C | 12 mm | -17 mm |
| Mar | 5.0 °C | +4.5 °C | 28 mm | -2 mm |
| Apr | 9.3 °C | +2.5 °C | 40 mm | +1 mm |
| May | 12.2 °C | -1.5 °C | 53 mm | +6 mm |
| Jun | 17.1 °C | -1.2 °C | 81 mm | +16 mm |
| Jul | 24.4 °C | +3.9 °C | 79 mm | -6 mm |
| Aug | 18.2 °C | -0.5 °C | 104 mm | +18 mm |
| Sep | 16.6 °C | +3.4 °C | 76 mm | +12 mm |
| Oct | 8.6 °C | +1.9 °C | 57 mm | +5 mm |
| Nov | 3.5 °C | +2.5 °C | 56 mm | +6 mm |
| Dec | 2.5 °C | +4.9 °C | 69 mm | +24 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 Kauhajoki?
Kauhajoki has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.8 °C and it receives 629 mm of precipitation per year.
What is the hottest day ever recorded in Kauhajoki?
The hottest day measured in Kauhajoki between 1940 and 2025 was 29 July 2010, reaching 32.0 °C.
What is the coldest day in Kauhajoki?
The coldest day measured in Kauhajoki between 1940 and 2025 was 7 January 1987, at -39.2 °C.
Does it snow in Kauhajoki?
Yes. Kauhajoki gets on average 119.7 cm of snow per year and has around 170 frost days.
Has the climate of Kauhajoki warmed?
Yes: Kauhajoki warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kauhajoki?
The wettest day measured in Kauhajoki between 1940 and 2025 was 6 August 1967, with 74 mm of rain in 24 hours.
What was the windiest day in Kauhajoki?
The windiest day measured in Kauhajoki between 1940 and 2025 was 15 December 1975, with winds reaching 40.0 km/h.
What is the warmest month in Kauhajoki?
The warmest month in Kauhajoki is July (16.3 °C on average); the coldest is January (-7.3 °C).
How much does it rain in Kauhajoki?
Kauhajoki receives on average 629 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Kauhajoki?
Kauhajoki gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kauhajoki?
The heaviest 24-hour snowfall measured in Kauhajoki between 1940 and 2025 was 18 December 1966, with 14.9 cm.
Are there tropical nights in Kauhajoki?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kauhajoki.
What was the most extreme apparent temperature in Kauhajoki?
In Kauhajoki, between 1940 and 2025, the highest apparent temperature reached 33.0 °C on 29 July 2010, and the lowest was -44.3 °C on 7 January 1987.
Compare Kauhajoki with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kauhajoki