Viitasaari climate — normals and trends
Viitasaari (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.2 °C and it receives 637 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 (16.6 °C on average) and the coldest is January (-8.9 °C). Rainfall peaks in August.
Viitasaari averages 170 frost days, 0 hot days (≥ 30 °C) and 130 rainy days per year.
Viitasaari has warmed by +2.2 °C between 1940 and 2025, or +0.26 °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 33.5 °C (on 29 July 2010) and the coldest -35.6 °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
ViitasaariCentral Finland
- coords
- 63.07°, 25.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.2°C
Average daily high
6.0°C
Average daily low
0.3°C
Annual rainfall
637mm
Sunshine / day
6.7h
Mean relative humidity
82%
Average peak wind
16.0km/h
Seasonal range
25.5°C
Frost days (< 0 °C)
170 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
141.3 cm
Average feels-like high
2.8 °C
Average feels-like low
-3.3 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.29 · 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
33.5 °C
29 July 2010
Coldest day
-35.6 °C
7 January 1985
Wettest day
59 mm
28 July 2004
Windiest day
42.5 km/h
18 April 1976
Strongest gust
100.1 km/h
26 October 1985
Hottest feels-like
32.8 °C
29 July 2010
Coldest feels-like
-41.3 °C
7 January 1985
Snowiest day
18.9 cm
25 January 2002
Sunniest day
19.0 h
30 June 2022
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 | -2.9 °C | +3.6 °C | 42 mm | +7 mm |
| Feb | -2.3 °C | +3.8 °C | 20 mm | -9 mm |
| Mar | 3.0 °C | +4.2 °C | 34 mm | +4 mm |
| Apr | 7.3 °C | +2.6 °C | 24 mm | -14 mm |
| May | 11.8 °C | -0.3 °C | 51 mm | +3 mm |
| Jun | 16.7 °C | -0.9 °C | 89 mm | +19 mm |
| Jul | 24.1 °C | +4.2 °C | 61 mm | -25 mm |
| Aug | 18.5 °C | +0.7 °C | 61 mm | -25 mm |
| Sep | 15.9 °C | +3.8 °C | 73 mm | +10 mm |
| Oct | 7.3 °C | +1.8 °C | 45 mm | -11 mm |
| Nov | 3.0 °C | +3.1 °C | 55 mm | +4 mm |
| Dec | 0.6 °C | +4.5 °C | 73 mm | +28 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 Viitasaari?
Viitasaari has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.2 °C and it receives 637 mm of precipitation per year.
What is the hottest day ever recorded in Viitasaari?
The hottest day measured in Viitasaari between 1940 and 2025 was 29 July 2010, reaching 33.5 °C.
What is the coldest day in Viitasaari?
The coldest day measured in Viitasaari between 1940 and 2025 was 7 January 1985, at -35.6 °C.
Does it snow in Viitasaari?
Yes. Viitasaari gets on average 141.3 cm of snow per year and has around 170 frost days.
Has the climate of Viitasaari warmed?
Yes: Viitasaari warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Viitasaari?
The wettest day measured in Viitasaari between 1940 and 2025 was 28 July 2004, with 59 mm of rain in 24 hours.
What was the windiest day in Viitasaari?
The windiest day measured in Viitasaari between 1940 and 2025 was 18 April 1976, with winds reaching 42.5 km/h.
What is the warmest month in Viitasaari?
The warmest month in Viitasaari is July (16.6 °C on average); the coldest is January (-8.9 °C).
How much does it rain in Viitasaari?
Viitasaari receives on average 637 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Viitasaari?
Viitasaari gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Viitasaari?
The heaviest 24-hour snowfall measured in Viitasaari between 1940 and 2025 was 25 January 2002, with 18.9 cm.
Are there tropical nights in Viitasaari?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Viitasaari.
What was the most extreme apparent temperature in Viitasaari?
In Viitasaari, between 1940 and 2025, the highest apparent temperature reached 32.8 °C on 29 July 2010, and the lowest was -41.3 °C on 7 January 1985.
Compare Viitasaari with another city
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Nearby cities
The climate around Viitasaari