Alavus climate — normals and trends
Alavus (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.6 °C and it receives 612 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 (-7.9 °C). Rainfall peaks in July.
Alavus averages 173 frost days, 0 hot days (≥ 30 °C) and 128 rainy days per year.
Alavus 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 185 to 161 per year over the period.
The hottest day of the period reached 32.2 °C (on 29 July 2010) and the coldest -37.6 °C (on 3 February 1966).
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
AlavusSouth Ostrobothnia
- coords
- 62.58°, 23.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.6°C
Average daily high
7.0°C
Average daily low
0.0°C
Annual rainfall
612mm
Sunshine / day
6.9h
Mean relative humidity
80%
Average peak wind
16.2km/h
Seasonal range
24.1°C
Frost days (< 0 °C)
173 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
125.8 cm
Average feels-like high
3.6 °C
Average feels-like low
-3.6 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.28 · 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
29 July 2010
Coldest day
-37.6 °C
3 February 1966
Wettest day
50 mm
29 July 1992
Windiest day
41.3 km/h
26 October 1985
Strongest gust
104.0 km/h
26 October 1985
Hottest feels-like
32.8 °C
18 July 2003
Coldest feels-like
-42.8 °C
3 February 1966
Snowiest day
16.4 cm
13 November 1996
Sunniest day
19.0 h
16 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.7 °C | +3.7 °C | 43 mm | +8 mm |
| Feb | -1.1 °C | +3.8 °C | 12 mm | -15 mm |
| Mar | 4.6 °C | +4.5 °C | 30 mm | -0 mm |
| Apr | 9.2 °C | +2.7 °C | 39 mm | +0 mm |
| May | 12.3 °C | -1.4 °C | 59 mm | +12 mm |
| Jun | 17.1 °C | -1.1 °C | 77 mm | +12 mm |
| Jul | 24.5 °C | +4.1 °C | 64 mm | -16 mm |
| Aug | 18.4 °C | -0.1 °C | 73 mm | -8 mm |
| Sep | 16.3 °C | +3.4 °C | 63 mm | +3 mm |
| Oct | 7.9 °C | +1.7 °C | 59 mm | +4 mm |
| Nov | 3.4 °C | +2.8 °C | 53 mm | +4 mm |
| Dec | 1.7 °C | +4.7 °C | 67 mm | +23 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 Alavus?
Alavus has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.6 °C and it receives 612 mm of precipitation per year.
What is the hottest day ever recorded in Alavus?
The hottest day measured in Alavus between 1940 and 2025 was 29 July 2010, reaching 32.2 °C.
What is the coldest day in Alavus?
The coldest day measured in Alavus between 1940 and 2025 was 3 February 1966, at -37.6 °C.
Does it snow in Alavus?
Yes. Alavus gets on average 125.8 cm of snow per year and has around 173 frost days.
Has the climate of Alavus warmed?
Yes: Alavus warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alavus?
The wettest day measured in Alavus between 1940 and 2025 was 29 July 1992, with 50 mm of rain in 24 hours.
What was the windiest day in Alavus?
The windiest day measured in Alavus between 1940 and 2025 was 26 October 1985, with winds reaching 41.3 km/h.
What is the warmest month in Alavus?
The warmest month in Alavus is July (16.2 °C on average); the coldest is January (-7.9 °C).
How much does it rain in Alavus?
Alavus receives on average 612 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Alavus?
Alavus gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.
What is the biggest single-day snowfall in Alavus?
The heaviest 24-hour snowfall measured in Alavus between 1940 and 2025 was 13 November 1996, with 16.4 cm.
Are there tropical nights in Alavus?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Alavus.
What was the most extreme apparent temperature in Alavus?
In Alavus, between 1940 and 2025, the highest apparent temperature reached 32.8 °C on 18 July 2003, and the lowest was -42.8 °C on 3 February 1966.
Compare Alavus with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alavus