Boysun climate — normals and trends
Boysun (Uzbekistan) has a hot-summer mediterranean continental climate (Dsa) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 491 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 (23.0 °C on average) and the coldest is January (-1.9 °C). Rainfall peaks in March.
Boysun averages 101 frost days, 17 hot days (≥ 30 °C) and 90 rainy days per year.
Boysun has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 89 per year over the period.
The hottest day of the period reached 36.4 °C (on 1 August 1941) and the coldest -23.1 °C (on 4 December 2002).
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
BoysunSurxondaryo Region
- coords
- 38.21°, 67.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
15.3°C
Average daily low
5.9°C
Annual rainfall
491mm
Sunshine / day
10.3h
Mean relative humidity
54%
Average peak wind
8.5km/h
Seasonal range
24.9°C
Frost days (< 0 °C)
101 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
90 d/yr
Annual snowfall
131.8 cm
Average feels-like high
13.4 °C
Average feels-like low
3.0 °C
Average peak gust
28.5 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.14 · 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
36.4 °C
1 August 1941
Coldest day
-23.1 °C
4 December 2002
Wettest day
39 mm
29 March 1945
Windiest day
24.2 km/h
5 April 1946
Strongest gust
76.3 km/h
18 April 2004
Hottest feels-like
38.4 °C
4 July 2025
Coldest feels-like
-28.2 °C
4 December 2002
Snowiest day
22.7 cm
30 March 1945
Sunniest day
14.4 h
22 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 | 3.4 °C | +1.9 °C | 34 mm | -28 mm |
| Feb | 5.1 °C | +2.0 °C | 58 mm | -13 mm |
| Mar | 10.8 °C | +2.8 °C | 94 mm | -0 mm |
| Apr | 20.2 °C | +5.1 °C | 46 mm | -28 mm |
| May | 25.9 °C | +5.1 °C | 16 mm | -33 mm |
| Jun | 28.5 °C | +2.5 °C | 5 mm | -11 mm |
| Jul | 31.7 °C | +3.2 °C | 0 mm | -6 mm |
| Aug | 29.4 °C | +2.2 °C | 0 mm | -3 mm |
| Sep | 25.4 °C | +2.5 °C | 1 mm | -3 mm |
| Oct | 20.1 °C | +3.6 °C | 5 mm | -13 mm |
| Nov | 13.1 °C | +3.3 °C | 3 mm | -35 mm |
| Dec | 6.7 °C | +2.8 °C | 73 mm | +17 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 Boysun?
Boysun has a hot-summer mediterranean continental climate (Köppen Dsa). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 491 mm of precipitation per year.
What is the hottest day ever recorded in Boysun?
The hottest day measured in Boysun between 1940 and 2025 was 1 August 1941, reaching 36.4 °C.
What is the coldest day in Boysun?
The coldest day measured in Boysun between 1940 and 2025 was 4 December 2002, at -23.1 °C.
Does it snow in Boysun?
Yes. Boysun gets on average 131.8 cm of snow per year and has around 101 frost days.
Has the climate of Boysun warmed?
Yes: Boysun warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Boysun?
The wettest day measured in Boysun between 1940 and 2025 was 29 March 1945, with 39 mm of rain in 24 hours.
What was the windiest day in Boysun?
The windiest day measured in Boysun between 1940 and 2025 was 5 April 1946, with winds reaching 24.2 km/h.
What is the warmest month in Boysun?
The warmest month in Boysun is July (23.0 °C on average); the coldest is January (-1.9 °C).
How much does it rain in Boysun?
Boysun receives on average 491 mm of precipitation per year, spread over about 90 rainy days.
Is it sunny in Boysun?
Boysun gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Boysun?
The heaviest 24-hour snowfall measured in Boysun between 1940 and 2025 was 30 March 1945, with 22.7 cm.
Are there tropical nights in Boysun?
Yes: Boysun has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Boysun?
In Boysun, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 4 July 2025, and the lowest was -28.2 °C on 4 December 2002.
Compare Boysun with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Boysun