Loviisa climate — normals and trends
Loviisa (Finland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.0 °C and it receives 649 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 (17.3 °C on average) and the coldest is February (-6.1 °C). Rainfall peaks in August.
Loviisa averages 141 frost days, 0 hot days (≥ 30 °C) and 130 rainy days per year.
Loviisa has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 159 to 123 per year over the period.
The hottest day of the period reached 30.4 °C (on 29 July 1994) and the coldest -35.8 °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
LoviisaUusimaa
- coords
- 60.46°, 26.23°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.0°C
Average daily high
7.8°C
Average daily low
2.2°C
Annual rainfall
649mm
Sunshine / day
7.3h
Mean relative humidity
80%
Average peak wind
18.6km/h
Seasonal range
23.4°C
Frost days (< 0 °C)
141 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
133.8 cm
Average feels-like high
4.4 °C
Average feels-like low
-1.5 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.35 · 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
30.4 °C
29 July 1994
Coldest day
-35.8 °C
10 January 1987
Wettest day
55 mm
13 June 1981
Windiest day
48.1 km/h
23 January 1995
Strongest gust
95.8 km/h
23 January 1995
Hottest feels-like
31.6 °C
23 June 2021
Coldest feels-like
-42.4 °C
10 January 1987
Snowiest day
15.7 cm
20 December 1970
Sunniest day
18.1 h
27 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 | 1.1 °C | +4.9 °C | 74 mm | +24 mm |
| Feb | -1.4 °C | +2.3 °C | 13 mm | -27 mm |
| Mar | 4.9 °C | +4.5 °C | 19 mm | -18 mm |
| Apr | 9.0 °C | +2.6 °C | 35 mm | -4 mm |
| May | 12.9 °C | -0.1 °C | 46 mm | +3 mm |
| Jun | 17.4 °C | -0.2 °C | 144 mm | +90 mm |
| Jul | 23.5 °C | +2.9 °C | 97 mm | +31 mm |
| Aug | 19.1 °C | -0.2 °C | 101 mm | +28 mm |
| Sep | 17.0 °C | +2.9 °C | 61 mm | -1 mm |
| Oct | 9.3 °C | +1.5 °C | 61 mm | -2 mm |
| Nov | 5.6 °C | +3.1 °C | 50 mm | -14 mm |
| Dec | 3.2 °C | +4.3 °C | 60 mm | -1 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 Loviisa?
Loviisa has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.0 °C and it receives 649 mm of precipitation per year.
What is the hottest day ever recorded in Loviisa?
The hottest day measured in Loviisa between 1940 and 2025 was 29 July 1994, reaching 30.4 °C.
What is the coldest day in Loviisa?
The coldest day measured in Loviisa between 1940 and 2025 was 10 January 1987, at -35.8 °C.
Does it snow in Loviisa?
Yes. Loviisa gets on average 133.8 cm of snow per year and has around 141 frost days.
Has the climate of Loviisa warmed?
Yes: Loviisa warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Loviisa?
The wettest day measured in Loviisa between 1940 and 2025 was 13 June 1981, with 55 mm of rain in 24 hours.
What was the windiest day in Loviisa?
The windiest day measured in Loviisa between 1940 and 2025 was 23 January 1995, with winds reaching 48.1 km/h.
What is the warmest month in Loviisa?
The warmest month in Loviisa is July (17.3 °C on average); the coldest is February (-6.1 °C).
How much does it rain in Loviisa?
Loviisa receives on average 649 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Loviisa?
Loviisa 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 Loviisa?
The heaviest 24-hour snowfall measured in Loviisa between 1940 and 2025 was 20 December 1970, with 15.7 cm.
Are there tropical nights in Loviisa?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Loviisa.
What was the most extreme apparent temperature in Loviisa?
In Loviisa, between 1940 and 2025, the highest apparent temperature reached 31.6 °C on 23 June 2021, and the lowest was -42.4 °C on 10 January 1987.
Compare Loviisa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Loviisa