Kirkkonummi climate — normals and trends
Kirkkonummi (Finland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.3 °C and it receives 708 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 (16.5 °C on average) and the coldest is February (-4.7 °C). Rainfall peaks in August.
Kirkkonummi averages 118 frost days, 0 hot days (≥ 30 °C) and 133 rainy days per year.
Kirkkonummi has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 147 to 89 per year over the period.
The hottest day of the period reached 25.0 °C (on 16 July 2021) and the coldest -29.9 °C (on 10 January 1987).
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
KirkkonummiUusimaa
- coords
- 60.12°, 24.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.3°C
Average daily high
6.6°C
Average daily low
4.0°C
Annual rainfall
708mm
Sunshine / day
7.5h
Mean relative humidity
83%
Average peak wind
31.5km/h
Seasonal range
21.2°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
116.6 cm
Average feels-like high
2.4 °C
Average feels-like low
-1.2 °C
Average peak gust
42.7 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.45 · 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
25.0 °C
16 July 2021
Coldest day
-29.9 °C
10 January 1987
Wettest day
81 mm
12 August 1972
Windiest day
77.9 km/h
23 January 1995
Strongest gust
113.4 km/h
30 November 2012
Hottest feels-like
27.5 °C
15 July 2021
Coldest feels-like
-39.4 °C
10 January 1987
Snowiest day
14.4 cm
16 February 1999
Sunniest day
17.6 h
22 June 2024
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 | 2.4 °C | +4.2 °C | 87 mm | +34 mm |
| Feb | -0.1 °C | +3.1 °C | 21 mm | -20 mm |
| Mar | 3.1 °C | +4.2 °C | 15 mm | -22 mm |
| Apr | 5.8 °C | +3.1 °C | 45 mm | +5 mm |
| May | 9.5 °C | +2.1 °C | 31 mm | -6 mm |
| Jun | 14.2 °C | +2.0 °C | 101 mm | +55 mm |
| Jul | 19.0 °C | +1.5 °C | 52 mm | -11 mm |
| Aug | 17.9 °C | +0.4 °C | 67 mm | -15 mm |
| Sep | 15.9 °C | +2.0 °C | 106 mm | +24 mm |
| Oct | 10.0 °C | +1.6 °C | 92 mm | +12 mm |
| Nov | 7.2 °C | +2.9 °C | 74 mm | -7 mm |
| Dec | 4.4 °C | +3.3 °C | 72 mm | +4 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 Kirkkonummi?
Kirkkonummi has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.3 °C and it receives 708 mm of precipitation per year.
What is the hottest day ever recorded in Kirkkonummi?
The hottest day measured in Kirkkonummi between 1940 and 2025 was 16 July 2021, reaching 25.0 °C.
What is the coldest day in Kirkkonummi?
The coldest day measured in Kirkkonummi between 1940 and 2025 was 10 January 1987, at -29.9 °C.
Does it snow in Kirkkonummi?
Yes. Kirkkonummi gets on average 116.6 cm of snow per year and has around 118 frost days.
Has the climate of Kirkkonummi warmed?
Yes: Kirkkonummi warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kirkkonummi?
The wettest day measured in Kirkkonummi between 1940 and 2025 was 12 August 1972, with 81 mm of rain in 24 hours.
What was the windiest day in Kirkkonummi?
The windiest day measured in Kirkkonummi between 1940 and 2025 was 23 January 1995, with winds reaching 77.9 km/h.
What is the warmest month in Kirkkonummi?
The warmest month in Kirkkonummi is July (16.5 °C on average); the coldest is February (-4.7 °C).
How much does it rain in Kirkkonummi?
Kirkkonummi receives on average 708 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Kirkkonummi?
Kirkkonummi 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 Kirkkonummi?
The heaviest 24-hour snowfall measured in Kirkkonummi between 1940 and 2025 was 16 February 1999, with 14.4 cm.
Are there tropical nights in Kirkkonummi?
Yes: Kirkkonummi has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kirkkonummi?
In Kirkkonummi, between 1940 and 2025, the highest apparent temperature reached 27.5 °C on 15 July 2021, and the lowest was -39.4 °C on 10 January 1987.
Compare Kirkkonummi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kirkkonummi