Kronoby climate — normals and trends
Kronoby (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.7 °C and it receives 552 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 (16.4 °C on average) and the coldest is February (-7.6 °C). Rainfall peaks in August.
Kronoby averages 162 frost days, 0 hot days (≥ 30 °C) and 118 rainy days per year.
Kronoby 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 175 to 149 per year over the period.
The hottest day of the period reached 32.4 °C (on 30 July 2018) and the coldest -35.9 °C (on 29 January 1999).
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
KronobyOstrobothnia
- coords
- 63.73°, 23.03°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.7°C
Average daily high
6.8°C
Average daily low
0.5°C
Annual rainfall
552mm
Sunshine / day
7.5h
Mean relative humidity
81%
Average peak wind
18.1km/h
Seasonal range
24.0°C
Frost days (< 0 °C)
162 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
118 d/yr
Annual snowfall
108.6 cm
Average feels-like high
3.4 °C
Average feels-like low
-3.3 °C
Average peak gust
37.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
32.4 °C
30 July 2018
Coldest day
-35.9 °C
29 January 1999
Wettest day
86 mm
6 August 1967
Windiest day
52.9 km/h
26 December 1992
Strongest gust
106.9 km/h
26 December 1992
Hottest feels-like
33.7 °C
18 July 1988
Coldest feels-like
-41.3 °C
29 January 1999
Snowiest day
17.4 cm
14 December 1964
Sunniest day
19.1 h
28 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 | -2.1 °C | +2.8 °C | 48 mm | +16 mm |
| Feb | -1.2 °C | +3.7 °C | 15 mm | -10 mm |
| Mar | 3.6 °C | +4.0 °C | 26 mm | -1 mm |
| Apr | 7.7 °C | +2.1 °C | 18 mm | -15 mm |
| May | 11.3 °C | -0.7 °C | 31 mm | -10 mm |
| Jun | 16.0 °C | -1.0 °C | 63 mm | +12 mm |
| Jul | 23.7 °C | +3.7 °C | 72 mm | +2 mm |
| Aug | 18.4 °C | +0.1 °C | 102 mm | +28 mm |
| Sep | 16.5 °C | +3.4 °C | 81 mm | +20 mm |
| Oct | 8.9 °C | +2.3 °C | 50 mm | -0 mm |
| Nov | 3.1 °C | +1.9 °C | 47 mm | +2 mm |
| Dec | 2.1 °C | +4.3 °C | 73 mm | +32 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 Kronoby?
Kronoby has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.7 °C and it receives 552 mm of precipitation per year.
What is the hottest day ever recorded in Kronoby?
The hottest day measured in Kronoby between 1940 and 2025 was 30 July 2018, reaching 32.4 °C.
What is the coldest day in Kronoby?
The coldest day measured in Kronoby between 1940 and 2025 was 29 January 1999, at -35.9 °C.
Does it snow in Kronoby?
Yes. Kronoby gets on average 108.6 cm of snow per year and has around 162 frost days.
Has the climate of Kronoby warmed?
Yes: Kronoby warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kronoby?
The wettest day measured in Kronoby between 1940 and 2025 was 6 August 1967, with 86 mm of rain in 24 hours.
What was the windiest day in Kronoby?
The windiest day measured in Kronoby between 1940 and 2025 was 26 December 1992, with winds reaching 52.9 km/h.
What is the warmest month in Kronoby?
The warmest month in Kronoby is July (16.4 °C on average); the coldest is February (-7.6 °C).
How much does it rain in Kronoby?
Kronoby receives on average 552 mm of precipitation per year, spread over about 118 rainy days.
Is it sunny in Kronoby?
Kronoby gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kronoby?
The heaviest 24-hour snowfall measured in Kronoby between 1940 and 2025 was 14 December 1964, with 17.4 cm.
Are there tropical nights in Kronoby?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kronoby.
What was the most extreme apparent temperature in Kronoby?
In Kronoby, between 1940 and 2025, the highest apparent temperature reached 33.7 °C on 18 July 1988, and the lowest was -41.3 °C on 29 January 1999.
Compare Kronoby with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kronoby