Haapavesi climate — normals and trends
Haapavesi (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.6 °C and it receives 608 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 (-9.7 °C). Rainfall peaks in August.
Haapavesi averages 186 frost days, 0 hot days (≥ 30 °C) and 127 rainy days per year.
Haapavesi 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 196 to 176 per year over the period.
The hottest day of the period reached 33.2 °C (on 29 July 2010) and the coldest -41.7 °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
HaapavesiNorth Ostrobothnia
- coords
- 64.13°, 25.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.6°C
Average daily high
6.1°C
Average daily low
-1.1°C
Annual rainfall
608mm
Sunshine / day
6.9h
Mean relative humidity
81%
Average peak wind
15.7km/h
Seasonal range
25.9°C
Frost days (< 0 °C)
186 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
129.7 cm
Average feels-like high
2.7 °C
Average feels-like low
-4.8 °C
Average peak gust
34.5 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
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.25 · 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
33.2 °C
29 July 2010
Coldest day
-41.7 °C
6 January 1985
Wettest day
41 mm
16 September 2020
Windiest day
44.3 km/h
26 December 1992
Strongest gust
97.6 km/h
2 November 2020
Hottest feels-like
34.7 °C
29 July 2010
Coldest feels-like
-46.9 °C
6 January 1985
Snowiest day
17.3 cm
9 April 1949
Sunniest day
19.6 h
14 June 2016
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 | -3.6 °C | +3.3 °C | 43 mm | +11 mm |
| Feb | -2.1 °C | +4.1 °C | 16 mm | -11 mm |
| Mar | 3.2 °C | +4.2 °C | 35 mm | +7 mm |
| Apr | 7.8 °C | +2.3 °C | 16 mm | -20 mm |
| May | 12.3 °C | -0.6 °C | 55 mm | +5 mm |
| Jun | 16.3 °C | -1.7 °C | 80 mm | +11 mm |
| Jul | 24.4 °C | +4.0 °C | 71 mm | -11 mm |
| Aug | 18.5 °C | +0.4 °C | 65 mm | -17 mm |
| Sep | 16.5 °C | +4.2 °C | 99 mm | +38 mm |
| Oct | 7.7 °C | +2.5 °C | 57 mm | +4 mm |
| Nov | 1.7 °C | +2.3 °C | 54 mm | +8 mm |
| Dec | -0.3 °C | +4.0 °C | 75 mm | +35 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 Haapavesi?
Haapavesi has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.6 °C and it receives 608 mm of precipitation per year.
What is the hottest day ever recorded in Haapavesi?
The hottest day measured in Haapavesi between 1940 and 2025 was 29 July 2010, reaching 33.2 °C.
What is the coldest day in Haapavesi?
The coldest day measured in Haapavesi between 1940 and 2025 was 6 January 1985, at -41.7 °C.
Does it snow in Haapavesi?
Yes. Haapavesi gets on average 129.7 cm of snow per year and has around 186 frost days.
Has the climate of Haapavesi warmed?
Yes: Haapavesi warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haapavesi?
The wettest day measured in Haapavesi between 1940 and 2025 was 16 September 2020, with 41 mm of rain in 24 hours.
What was the windiest day in Haapavesi?
The windiest day measured in Haapavesi between 1940 and 2025 was 26 December 1992, with winds reaching 44.3 km/h.
What is the warmest month in Haapavesi?
The warmest month in Haapavesi is July (16.2 °C on average); the coldest is January (-9.7 °C).
How much does it rain in Haapavesi?
Haapavesi receives on average 608 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Haapavesi?
Haapavesi 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 Haapavesi?
The heaviest 24-hour snowfall measured in Haapavesi between 1940 and 2025 was 9 April 1949, with 17.3 cm.
Are there tropical nights in Haapavesi?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Haapavesi.
What was the most extreme apparent temperature in Haapavesi?
In Haapavesi, between 1940 and 2025, the highest apparent temperature reached 34.7 °C on 29 July 2010, and the lowest was -46.9 °C on 6 January 1985.
Compare Haapavesi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haapavesi