Semey climate — normals and trends
Semey (Kazakhstan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 4.1 °C and it receives 307 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 (22.6 °C on average) and the coldest is January (-15.5 °C). Rainfall peaks in July.
Semey averages 179 frost days, 30 hot days (≥ 30 °C) and 79 rainy days per year.
Semey has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 185 to 173 per year over the period.
The hottest day of the period reached 42.2 °C (on 15 July 1992) and the coldest -45.5 °C (on 19 December 1966).
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
SemeyAbai Region
- coords
- 50.42°, 80.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.1°C
Average daily high
9.4°C
Average daily low
-1.5°C
Annual rainfall
307mm
Sunshine / day
9.1h
Mean relative humidity
63%
Average peak wind
17.3km/h
Seasonal range
38.1°C
Frost days (< 0 °C)
179 d/yr
Hot days (≥ 30 °C)
30 d/yr
Rainy days (≥ 1 mm)
79 d/yr
Annual snowfall
72.0 cm
Average feels-like high
5.8 °C
Average feels-like low
-5.2 °C
Average peak gust
33.5 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
13.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.16 · 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
42.2 °C
15 July 1992
Coldest day
-45.5 °C
19 December 1966
Wettest day
28 mm
31 August 2025
Windiest day
54.3 km/h
6 May 1945
Strongest gust
108.0 km/h
6 May 1945
Hottest feels-like
41.3 °C
11 July 1974
Coldest feels-like
-50.6 °C
11 February 1969
Snowiest day
13.4 cm
9 February 1998
Sunniest day
15.4 h
15 June 1941
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 | -5.0 °C | +6.1 °C | 26 mm | +8 mm |
| Feb | -5.9 °C | +3.6 °C | 7 mm | -12 mm |
| Mar | 3.5 °C | +4.8 °C | 11 mm | -9 mm |
| Apr | 18.3 °C | +5.9 °C | 16 mm | -7 mm |
| May | 24.6 °C | +3.5 °C | 27 mm | 0 mm |
| Jun | 29.8 °C | +3.1 °C | 31 mm | +2 mm |
| Jul | 28.8 °C | +0.4 °C | 37 mm | -1 mm |
| Aug | 24.9 °C | -1.2 °C | 60 mm | +34 mm |
| Sep | 19.5 °C | -0.3 °C | 46 mm | +24 mm |
| Oct | 7.7 °C | -2.6 °C | 9 mm | -20 mm |
| Nov | 3.2 °C | +4.3 °C | 42 mm | +12 mm |
| Dec | -4.6 °C | +3.9 °C | 37 mm | +12 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 Semey?
Semey has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 4.1 °C and it receives 307 mm of precipitation per year.
What is the hottest day ever recorded in Semey?
The hottest day measured in Semey between 1940 and 2025 was 15 July 1992, reaching 42.2 °C.
What is the coldest day in Semey?
The coldest day measured in Semey between 1940 and 2025 was 19 December 1966, at -45.5 °C.
Does it snow in Semey?
Yes. Semey gets on average 72.0 cm of snow per year and has around 179 frost days.
Has the climate of Semey warmed?
Yes: Semey warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Semey?
The wettest day measured in Semey between 1940 and 2025 was 31 August 2025, with 28 mm of rain in 24 hours.
What was the windiest day in Semey?
The windiest day measured in Semey between 1940 and 2025 was 6 May 1945, with winds reaching 54.3 km/h.
What is the warmest month in Semey?
The warmest month in Semey is July (22.6 °C on average); the coldest is January (-15.5 °C).
How much does it rain in Semey?
Semey receives on average 307 mm of precipitation per year, spread over about 79 rainy days.
Is it sunny in Semey?
Semey gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Semey?
The heaviest 24-hour snowfall measured in Semey between 1940 and 2025 was 9 February 1998, with 13.4 cm.
Are there tropical nights in Semey?
Yes: Semey has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Semey?
In Semey, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 11 July 1974, and the lowest was -50.6 °C on 11 February 1969.
Compare Semey with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Semey