Svetlyy climate — normals and trends
Svetlyy (Russia) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 0.1 °C and it receives 483 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 (18.6 °C on average) and the coldest is January (-18.5 °C). Rainfall peaks in August.
Svetlyy averages 202 frost days, 3 hot days (≥ 30 °C) and 120 rainy days per year.
Svetlyy has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 212 to 192 per year over the period.
The hottest day of the period reached 34.9 °C (on 7 June 2023) and the coldest -49.9 °C (on 11 December 1984).
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
SvetlyyTomsk Oblast
- coords
- 56.92°, 85.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
0.1°C
Average daily high
4.3°C
Average daily low
-4.2°C
Annual rainfall
483mm
Sunshine / day
7.6h
Mean relative humidity
74%
Average peak wind
17.6km/h
Seasonal range
37.1°C
Frost days (< 0 °C)
202 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
126.9 cm
Average feels-like high
0.7 °C
Average feels-like low
-8.2 °C
Average peak gust
34.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °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
34.9 °C
7 June 2023
Coldest day
-49.9 °C
11 December 1984
Wettest day
41 mm
5 July 1947
Windiest day
51.5 km/h
20 April 1945
Strongest gust
97.2 km/h
20 April 1945
Hottest feels-like
37.8 °C
22 July 1953
Coldest feels-like
-55.4 °C
11 December 1984
Snowiest day
12.1 cm
14 May 1974
Sunniest day
17.0 h
11 June 1940
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 | -7.6 °C | +7.4 °C | 29 mm | +8 mm |
| Feb | -7.6 °C | +4.4 °C | 17 mm | +0 mm |
| Mar | 0.6 °C | +4.0 °C | 33 mm | +11 mm |
| Apr | 9.5 °C | +3.8 °C | 51 mm | +20 mm |
| May | 15.4 °C | +1.1 °C | 33 mm | -16 mm |
| Jun | 25.6 °C | +4.8 °C | 44 mm | -14 mm |
| Jul | 23.8 °C | +0.5 °C | 46 mm | -14 mm |
| Aug | 20.5 °C | +0.4 °C | 100 mm | +37 mm |
| Sep | 16.4 °C | +2.8 °C | 28 mm | -20 mm |
| Oct | 3.7 °C | -0.6 °C | 17 mm | -28 mm |
| Nov | -3.2 °C | +3.5 °C | 49 mm | +9 mm |
| Dec | -10.8 °C | +2.2 °C | 41 mm | +11 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 Svetlyy?
Svetlyy has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 0.1 °C and it receives 483 mm of precipitation per year.
What is the hottest day ever recorded in Svetlyy?
The hottest day measured in Svetlyy between 1940 and 2025 was 7 June 2023, reaching 34.9 °C.
What is the coldest day in Svetlyy?
The coldest day measured in Svetlyy between 1940 and 2025 was 11 December 1984, at -49.9 °C.
Does it snow in Svetlyy?
Yes. Svetlyy gets on average 126.9 cm of snow per year and has around 202 frost days.
Has the climate of Svetlyy warmed?
Yes: Svetlyy warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Svetlyy?
The wettest day measured in Svetlyy between 1940 and 2025 was 5 July 1947, with 41 mm of rain in 24 hours.
What was the windiest day in Svetlyy?
The windiest day measured in Svetlyy between 1940 and 2025 was 20 April 1945, with winds reaching 51.5 km/h.
What is the warmest month in Svetlyy?
The warmest month in Svetlyy is July (18.6 °C on average); the coldest is January (-18.5 °C).
How much does it rain in Svetlyy?
Svetlyy receives on average 483 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Svetlyy?
Svetlyy gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Svetlyy?
The heaviest 24-hour snowfall measured in Svetlyy between 1940 and 2025 was 14 May 1974, with 12.1 cm.
Are there tropical nights in Svetlyy?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Svetlyy.
What was the most extreme apparent temperature in Svetlyy?
In Svetlyy, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 22 July 1953, and the lowest was -55.4 °C on 11 December 1984.
Compare Svetlyy with another city
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Nearby cities
The climate around Svetlyy