Petrozavodsk climate — normals and trends
Petrozavodsk (Russia) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.8 °C and it receives 640 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 (16.7 °C on average) and the coldest is January (-10.5 °C). Rainfall peaks in August.
Petrozavodsk averages 176 frost days, 1 hot days (≥ 30 °C) and 137 rainy days per year.
Petrozavodsk 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 187 to 165 per year over the period.
The hottest day of the period reached 33.4 °C (on 22 June 2021) and the coldest -41.2 °C (on 11 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
PetrozavodskRepublic of Karelia
- coords
- 61.78°, 34.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.8°C
Average daily high
6.0°C
Average daily low
-0.5°C
Annual rainfall
640mm
Sunshine / day
6.8h
Mean relative humidity
81%
Average peak wind
16.7km/h
Seasonal range
27.2°C
Frost days (< 0 °C)
176 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
146.1 cm
Average feels-like high
2.7 °C
Average feels-like low
-4.3 °C
Average peak gust
36.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.34 · 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
33.4 °C
22 June 2021
Coldest day
-41.2 °C
11 January 1987
Wettest day
53 mm
21 August 2018
Windiest day
40.5 km/h
9 March 1943
Strongest gust
90.0 km/h
2 March 1984
Hottest feels-like
35.6 °C
28 July 2010
Coldest feels-like
-46.9 °C
11 January 1987
Snowiest day
14.6 cm
23 March 1971
Sunniest day
18.5 h
25 June 1953
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 | -2.2 °C | +5.8 °C | 85 mm | +52 mm |
| Feb | -3.8 °C | +3.1 °C | 28 mm | 0 mm |
| Mar | 2.9 °C | +4.2 °C | 37 mm | +4 mm |
| Apr | 6.9 °C | +1.3 °C | 49 mm | +10 mm |
| May | 13.5 °C | +0.8 °C | 61 mm | +8 mm |
| Jun | 17.3 °C | -0.6 °C | 96 mm | +27 mm |
| Jul | 23.9 °C | +3.4 °C | 35 mm | -46 mm |
| Aug | 19.5 °C | +1.0 °C | 69 mm | -20 mm |
| Sep | 17.1 °C | +4.3 °C | 26 mm | -41 mm |
| Oct | 7.6 °C | +2.0 °C | 25 mm | -32 mm |
| Nov | 2.5 °C | +3.2 °C | 43 mm | -7 mm |
| Dec | -0.5 °C | +4.4 °C | 56 mm | +15 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 Petrozavodsk?
Petrozavodsk has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.8 °C and it receives 640 mm of precipitation per year.
What is the hottest day ever recorded in Petrozavodsk?
The hottest day measured in Petrozavodsk between 1940 and 2025 was 22 June 2021, reaching 33.4 °C.
What is the coldest day in Petrozavodsk?
The coldest day measured in Petrozavodsk between 1940 and 2025 was 11 January 1987, at -41.2 °C.
Does it snow in Petrozavodsk?
Yes. Petrozavodsk gets on average 146.1 cm of snow per year and has around 176 frost days.
Has the climate of Petrozavodsk warmed?
Yes: Petrozavodsk warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Petrozavodsk?
The wettest day measured in Petrozavodsk between 1940 and 2025 was 21 August 2018, with 53 mm of rain in 24 hours.
What was the windiest day in Petrozavodsk?
The windiest day measured in Petrozavodsk between 1940 and 2025 was 9 March 1943, with winds reaching 40.5 km/h.
What is the warmest month in Petrozavodsk?
The warmest month in Petrozavodsk is July (16.7 °C on average); the coldest is January (-10.5 °C).
How much does it rain in Petrozavodsk?
Petrozavodsk receives on average 640 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Petrozavodsk?
Petrozavodsk gets on average 6.8 hours of sunshine per day, roughly 2,482 hours per year over 1940-2025.
What is the biggest single-day snowfall in Petrozavodsk?
The heaviest 24-hour snowfall measured in Petrozavodsk between 1940 and 2025 was 23 March 1971, with 14.6 cm.
Are there tropical nights in Petrozavodsk?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Petrozavodsk.
What was the most extreme apparent temperature in Petrozavodsk?
In Petrozavodsk, between 1940 and 2025, the highest apparent temperature reached 35.6 °C on 28 July 2010, and the lowest was -46.9 °C on 11 January 1987.
Compare Petrozavodsk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Petrozavodsk