Suurmetsä climate — normals and trends
Suurmetsä (Finland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.1 °C and it receives 686 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 (17.4 °C on average) and the coldest is February (-5.9 °C). Rainfall peaks in August.
Suurmetsä averages 143 frost days, 0 hot days (≥ 30 °C) and 133 rainy days per year.
Suurmetsä has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 164 to 122 per year over the period.
The hottest day of the period reached 31.9 °C (on 28 July 2019) and the coldest -36.1 °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
SuurmetsäUusimaa
- coords
- 60.27°, 25.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.1°C
Average daily high
8.1°C
Average daily low
2.1°C
Annual rainfall
686mm
Sunshine / day
7.5h
Mean relative humidity
81%
Average peak wind
19.0km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
143 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
131.6 cm
Average feels-like high
4.8 °C
Average feels-like low
-1.6 °C
Average peak gust
36.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.39 · 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
31.9 °C
28 July 2019
Coldest day
-36.1 °C
10 January 1987
Wettest day
77 mm
12 August 1972
Windiest day
50.7 km/h
23 January 1995
Strongest gust
100.4 km/h
23 January 1995
Hottest feels-like
33.3 °C
28 July 2019
Coldest feels-like
-42.9 °C
10 January 1987
Snowiest day
15.6 cm
20 December 1970
Sunniest day
18.0 h
17 June 2014
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 | 1.5 °C | +5.0 °C | 74 mm | +24 mm |
| Feb | -0.8 °C | +2.7 °C | 16 mm | -25 mm |
| Mar | 5.3 °C | +4.9 °C | 14 mm | -24 mm |
| Apr | 9.3 °C | +2.7 °C | 40 mm | -1 mm |
| May | 13.3 °C | -0.3 °C | 40 mm | -4 mm |
| Jun | 17.4 °C | -1.0 °C | 119 mm | +59 mm |
| Jul | 23.7 °C | +2.7 °C | 93 mm | +12 mm |
| Aug | 19.2 °C | -0.3 °C | 75 mm | -11 mm |
| Sep | 17.0 °C | +2.7 °C | 89 mm | +23 mm |
| Oct | 9.5 °C | +1.4 °C | 62 mm | +4 mm |
| Nov | 5.9 °C | +3.3 °C | 39 mm | -23 mm |
| Dec | 3.5 °C | +4.3 °C | 50 mm | -9 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 Suurmetsä?
Suurmetsä has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.1 °C and it receives 686 mm of precipitation per year.
What is the hottest day ever recorded in Suurmetsä?
The hottest day measured in Suurmetsä between 1940 and 2025 was 28 July 2019, reaching 31.9 °C.
What is the coldest day in Suurmetsä?
The coldest day measured in Suurmetsä between 1940 and 2025 was 10 January 1987, at -36.1 °C.
Does it snow in Suurmetsä?
Yes. Suurmetsä gets on average 131.6 cm of snow per year and has around 143 frost days.
Has the climate of Suurmetsä warmed?
Yes: Suurmetsä warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Suurmetsä?
The wettest day measured in Suurmetsä between 1940 and 2025 was 12 August 1972, with 77 mm of rain in 24 hours.
What was the windiest day in Suurmetsä?
The windiest day measured in Suurmetsä between 1940 and 2025 was 23 January 1995, with winds reaching 50.7 km/h.
What is the warmest month in Suurmetsä?
The warmest month in Suurmetsä is July (17.4 °C on average); the coldest is February (-5.9 °C).
How much does it rain in Suurmetsä?
Suurmetsä receives on average 686 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Suurmetsä?
Suurmetsä 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 Suurmetsä?
The heaviest 24-hour snowfall measured in Suurmetsä between 1940 and 2025 was 20 December 1970, with 15.6 cm.
Are there tropical nights in Suurmetsä?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Suurmetsä.
What was the most extreme apparent temperature in Suurmetsä?
In Suurmetsä, between 1940 and 2025, the highest apparent temperature reached 33.3 °C on 28 July 2019, and the lowest was -42.9 °C on 10 January 1987.
Compare Suurmetsä with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Suurmetsä