Rauma climate — normals and trends
Rauma (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 656 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 (16.0 °C on average) and the coldest is February (-4.4 °C). Rainfall peaks in August.
Rauma averages 113 frost days, 0 hot days (≥ 30 °C) and 130 rainy days per year.
Rauma has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 142 to 84 per year over the period.
The hottest day of the period reached 27.6 °C (on 4 August 2014) and the coldest -31.3 °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
RaumaSatakunta
- coords
- 61.13°, 21.51°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.3°C
Average daily high
6.8°C
Average daily low
3.7°C
Annual rainfall
656mm
Sunshine / day
7.8h
Mean relative humidity
82%
Average peak wind
27.3km/h
Seasonal range
20.4°C
Frost days (< 0 °C)
113 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
98.1 cm
Average feels-like high
2.9 °C
Average feels-like low
-1.0 °C
Average peak gust
40.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.41 · 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
27.6 °C
4 August 2014
Coldest day
-31.3 °C
10 January 1987
Wettest day
80 mm
6 August 1967
Windiest day
72.3 km/h
26 December 2011
Strongest gust
113.8 km/h
26 December 2011
Hottest feels-like
28.8 °C
30 July 2018
Coldest feels-like
-39.0 °C
10 January 1987
Snowiest day
16.5 cm
18 December 1966
Sunniest day
18.6 h
20 June 2023
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 | 1.6 °C | +3.0 °C | 61 mm | +15 mm |
| Feb | 0.0 °C | +2.8 °C | 14 mm | -19 mm |
| Mar | 3.5 °C | +3.9 °C | 17 mm | -16 mm |
| Apr | 6.3 °C | +2.4 °C | 56 mm | +18 mm |
| May | 9.1 °C | +0.2 °C | 43 mm | +5 mm |
| Jun | 13.8 °C | +0.7 °C | 61 mm | +13 mm |
| Jul | 20.5 °C | +3.1 °C | 64 mm | -2 mm |
| Aug | 17.3 °C | 0.0 °C | 103 mm | +19 mm |
| Sep | 15.7 °C | +2.3 °C | 101 mm | +26 mm |
| Oct | 9.7 °C | +1.9 °C | 69 mm | -0 mm |
| Nov | 6.2 °C | +2.4 °C | 76 mm | +9 mm |
| Dec | 4.9 °C | +3.9 °C | 77 mm | +19 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 Rauma?
Rauma has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.3 °C and it receives 656 mm of precipitation per year.
What is the hottest day ever recorded in Rauma?
The hottest day measured in Rauma between 1940 and 2025 was 4 August 2014, reaching 27.6 °C.
What is the coldest day in Rauma?
The coldest day measured in Rauma between 1940 and 2025 was 10 January 1987, at -31.3 °C.
Does it snow in Rauma?
Yes. Rauma gets on average 98.1 cm of snow per year and has around 113 frost days.
Has the climate of Rauma warmed?
Yes: Rauma warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rauma?
The wettest day measured in Rauma between 1940 and 2025 was 6 August 1967, with 80 mm of rain in 24 hours.
What was the windiest day in Rauma?
The windiest day measured in Rauma between 1940 and 2025 was 26 December 2011, with winds reaching 72.3 km/h.
What is the warmest month in Rauma?
The warmest month in Rauma is July (16.0 °C on average); the coldest is February (-4.4 °C).
How much does it rain in Rauma?
Rauma receives on average 656 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Rauma?
Rauma gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rauma?
The heaviest 24-hour snowfall measured in Rauma between 1940 and 2025 was 18 December 1966, with 16.5 cm.
Are there tropical nights in Rauma?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Rauma.
What was the most extreme apparent temperature in Rauma?
In Rauma, between 1940 and 2025, the highest apparent temperature reached 28.8 °C on 30 July 2018, and the lowest was -39.0 °C on 10 January 1987.
Compare Rauma with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rauma