Vyazma climate — normals and trends
Vyazma (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.7 °C and it receives 702 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 (17.6 °C on average) and the coldest is January (-8.5 °C). Rainfall peaks in July.
Vyazma averages 158 frost days, 1 hot days (≥ 30 °C) and 139 rainy days per year.
Vyazma has warmed by +3.0 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 172 to 144 per year over the period.
The hottest day of the period reached 36.9 °C (on 6 August 2010) and the coldest -41.1 °C (on 17 January 1940).
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
VyazmaSmolensk Oblast
- coords
- 55.21°, 34.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.7°C
Average daily high
8.2°C
Average daily low
1.1°C
Annual rainfall
702mm
Sunshine / day
6.7h
Mean relative humidity
79%
Average peak wind
17.6km/h
Seasonal range
26.1°C
Frost days (< 0 °C)
158 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
135.7 cm
Average feels-like high
5.1 °C
Average feels-like low
-2.5 °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
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.52 · 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
36.9 °C
6 August 2010
Coldest day
-41.1 °C
17 January 1940
Wettest day
57 mm
10 July 1986
Windiest day
46.1 km/h
13 March 2020
Strongest gust
97.2 km/h
15 September 1998
Hottest feels-like
36.4 °C
15 July 1951
Coldest feels-like
-46.9 °C
17 January 1940
Snowiest day
19.4 cm
20 November 2004
Sunniest day
16.5 h
25 June 2010
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 | 1.3 °C | +7.3 °C | 48 mm | +9 mm |
| Feb | -2.7 °C | +2.0 °C | 10 mm | -26 mm |
| Mar | 7.7 °C | +6.9 °C | 40 mm | -0 mm |
| Apr | 12.3 °C | +2.9 °C | 65 mm | +18 mm |
| May | 16.3 °C | -0.3 °C | 57 mm | -14 mm |
| Jun | 19.8 °C | -0.4 °C | 107 mm | +24 mm |
| Jul | 24.9 °C | +3.0 °C | 118 mm | +25 mm |
| Aug | 20.4 °C | -0.3 °C | 71 mm | -6 mm |
| Sep | 17.5 °C | +2.5 °C | 20 mm | -43 mm |
| Oct | 8.9 °C | +1.1 °C | 93 mm | +36 mm |
| Nov | 4.5 °C | +3.8 °C | 80 mm | +28 mm |
| Dec | -0.4 °C | +3.1 °C | 48 mm | +3 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 Vyazma?
Vyazma has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.7 °C and it receives 702 mm of precipitation per year.
What is the hottest day ever recorded in Vyazma?
The hottest day measured in Vyazma between 1940 and 2025 was 6 August 2010, reaching 36.9 °C.
What is the coldest day in Vyazma?
The coldest day measured in Vyazma between 1940 and 2025 was 17 January 1940, at -41.1 °C.
Does it snow in Vyazma?
Yes. Vyazma gets on average 135.7 cm of snow per year and has around 158 frost days.
Has the climate of Vyazma warmed?
Yes: Vyazma warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Vyazma?
The wettest day measured in Vyazma between 1940 and 2025 was 10 July 1986, with 57 mm of rain in 24 hours.
What was the windiest day in Vyazma?
The windiest day measured in Vyazma between 1940 and 2025 was 13 March 2020, with winds reaching 46.1 km/h.
What is the warmest month in Vyazma?
The warmest month in Vyazma is July (17.6 °C on average); the coldest is January (-8.5 °C).
How much does it rain in Vyazma?
Vyazma receives on average 702 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Vyazma?
Vyazma gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Vyazma?
The heaviest 24-hour snowfall measured in Vyazma between 1940 and 2025 was 20 November 2004, with 19.4 cm.
Are there tropical nights in Vyazma?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Vyazma.
What was the most extreme apparent temperature in Vyazma?
In Vyazma, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 15 July 1951, and the lowest was -46.9 °C on 17 January 1940.
Compare Vyazma with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Vyazma