Kello climate — normals and trends
Kello (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.4 °C and it receives 628 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 (15.5 °C on average) and the coldest is January (-8.8 °C). Rainfall peaks in August.
Kello averages 176 frost days, 0 hot days (≥ 30 °C) and 125 rainy days per year.
Kello has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 182 to 170 per year over the period.
The hottest day of the period reached 29.1 °C (on 19 July 1988) and the coldest -35.6 °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
KelloNorth Ostrobothnia
- coords
- 65.13°, 25.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.4°C
Average daily high
4.5°C
Average daily low
0.2°C
Annual rainfall
628mm
Sunshine / day
7.3h
Mean relative humidity
82%
Average peak wind
21.7km/h
Seasonal range
24.3°C
Frost days (< 0 °C)
176 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
140.7 cm
Average feels-like high
0.6 °C
Average feels-like low
-4.1 °C
Average peak gust
34.4 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
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.14 · 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
29.1 °C
19 July 1988
Coldest day
-35.6 °C
29 January 1999
Wettest day
39 mm
18 September 2015
Windiest day
61.7 km/h
26 December 1992
Strongest gust
100.4 km/h
2 November 2020
Hottest feels-like
31.7 °C
31 July 2025
Coldest feels-like
-40.7 °C
7 January 1985
Snowiest day
15.7 cm
9 April 1949
Sunniest day
20.7 h
20 June 2020
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 | -4.5 °C | +2.0 °C | 47 mm | +8 mm |
| Feb | -3.5 °C | +3.2 °C | 46 mm | +13 mm |
| Mar | -0.4 °C | +2.6 °C | 34 mm | +2 mm |
| Apr | 3.1 °C | +1.1 °C | 16 mm | -20 mm |
| May | 8.2 °C | +0.5 °C | 49 mm | +6 mm |
| Jun | 14.1 °C | +0.9 °C | 92 mm | +39 mm |
| Jul | 21.5 °C | +3.8 °C | 73 mm | +8 mm |
| Aug | 17.8 °C | +1.3 °C | 112 mm | +34 mm |
| Sep | 15.1 °C | +3.5 °C | 105 mm | +32 mm |
| Oct | 7.9 °C | +2.9 °C | 91 mm | +25 mm |
| Nov | 1.6 °C | +1.3 °C | 79 mm | +21 mm |
| Dec | -0.5 °C | +3.1 °C | 66 mm | +16 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 Kello?
Kello has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.4 °C and it receives 628 mm of precipitation per year.
What is the hottest day ever recorded in Kello?
The hottest day measured in Kello between 1940 and 2025 was 19 July 1988, reaching 29.1 °C.
What is the coldest day in Kello?
The coldest day measured in Kello between 1940 and 2025 was 29 January 1999, at -35.6 °C.
Does it snow in Kello?
Yes. Kello gets on average 140.7 cm of snow per year and has around 176 frost days.
Has the climate of Kello warmed?
Yes: Kello warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kello?
The wettest day measured in Kello between 1940 and 2025 was 18 September 2015, with 39 mm of rain in 24 hours.
What was the windiest day in Kello?
The windiest day measured in Kello between 1940 and 2025 was 26 December 1992, with winds reaching 61.7 km/h.
What is the warmest month in Kello?
The warmest month in Kello is July (15.5 °C on average); the coldest is January (-8.8 °C).
How much does it rain in Kello?
Kello receives on average 628 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Kello?
Kello 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 Kello?
The heaviest 24-hour snowfall measured in Kello between 1940 and 2025 was 9 April 1949, with 15.7 cm.
Are there tropical nights in Kello?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kello.
What was the most extreme apparent temperature in Kello?
In Kello, between 1940 and 2025, the highest apparent temperature reached 31.7 °C on 31 July 2025, and the lowest was -40.7 °C on 7 January 1985.
Compare Kello with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kello