Lappeenranta climate — normals and trends
Lappeenranta (Finland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.3 °C and it receives 635 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 (17.5 °C on average) and the coldest is January (-7.8 °C). Rainfall peaks in August.
Lappeenranta averages 157 frost days, 1 hot days (≥ 30 °C) and 133 rainy days per year.
Lappeenranta 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 174 to 140 per year over the period.
The hottest day of the period reached 33.2 °C (on 29 July 2010) and the coldest -36.5 °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
LappeenrantaSouth Karelia
- coords
- 61.06°, 28.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.3°C
Average daily high
7.3°C
Average daily low
1.3°C
Annual rainfall
635mm
Sunshine / day
7.2h
Mean relative humidity
81%
Average peak wind
16.9km/h
Seasonal range
25.3°C
Frost days (< 0 °C)
157 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
141.0 cm
Average feels-like high
4.1 °C
Average feels-like low
-2.3 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.36 · 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
-36.5 °C
10 January 1987
Wettest day
48 mm
19 June 2025
Windiest day
41.8 km/h
7 September 1977
Strongest gust
90.4 km/h
1 December 1999
Hottest feels-like
34.1 °C
29 July 2010
Coldest feels-like
-42.4 °C
10 January 1987
Snowiest day
16.2 cm
1 November 2006
Sunniest day
18.0 h
8 June 2011
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 | -0.2 °C | +5.3 °C | 69 mm | +26 mm |
| Feb | -2.5 °C | +2.7 °C | 9 mm | -27 mm |
| Mar | 3.9 °C | +4.3 °C | 28 mm | -8 mm |
| Apr | 8.5 °C | +2.4 °C | 48 mm | +11 mm |
| May | 12.7 °C | -0.9 °C | 87 mm | +44 mm |
| Jun | 17.8 °C | -1.0 °C | 137 mm | +78 mm |
| Jul | 24.7 °C | +3.5 °C | 65 mm | -9 mm |
| Aug | 19.4 °C | +0.1 °C | 107 mm | +27 mm |
| Sep | 17.4 °C | +3.7 °C | 52 mm | -11 mm |
| Oct | 8.8 °C | +1.7 °C | 44 mm | -13 mm |
| Nov | 4.4 °C | +3.2 °C | 57 mm | +2 mm |
| Dec | 2.0 °C | +4.7 °C | 47 mm | -6 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 Lappeenranta?
Lappeenranta has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.3 °C and it receives 635 mm of precipitation per year.
What is the hottest day ever recorded in Lappeenranta?
The hottest day measured in Lappeenranta between 1940 and 2025 was 29 July 2010, reaching 33.2 °C.
What is the coldest day in Lappeenranta?
The coldest day measured in Lappeenranta between 1940 and 2025 was 10 January 1987, at -36.5 °C.
Does it snow in Lappeenranta?
Yes. Lappeenranta gets on average 141.0 cm of snow per year and has around 157 frost days.
Has the climate of Lappeenranta warmed?
Yes: Lappeenranta warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lappeenranta?
The wettest day measured in Lappeenranta between 1940 and 2025 was 19 June 2025, with 48 mm of rain in 24 hours.
What was the windiest day in Lappeenranta?
The windiest day measured in Lappeenranta between 1940 and 2025 was 7 September 1977, with winds reaching 41.8 km/h.
What is the warmest month in Lappeenranta?
The warmest month in Lappeenranta is July (17.5 °C on average); the coldest is January (-7.8 °C).
How much does it rain in Lappeenranta?
Lappeenranta receives on average 635 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Lappeenranta?
Lappeenranta gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Lappeenranta?
The heaviest 24-hour snowfall measured in Lappeenranta between 1940 and 2025 was 1 November 2006, with 16.2 cm.
Are there tropical nights in Lappeenranta?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Lappeenranta.
What was the most extreme apparent temperature in Lappeenranta?
In Lappeenranta, between 1940 and 2025, the highest apparent temperature reached 34.1 °C on 29 July 2010, and the lowest was -42.4 °C on 10 January 1987.
Compare Lappeenranta with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lappeenranta