Bulgan climate — normals and trends
Bulgan (Mongolia) has a dry-winter subarctic climate (Dwc) under the Köppen-Geiger classification. Its mean annual temperature is -0.5 °C and it receives 408 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 (17.3 °C on average) and the coldest is January (-20.5 °C). Rainfall peaks in July.
Bulgan averages 222 frost days, 2 hot days (≥ 30 °C) and 77 rainy days per year.
Bulgan has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 232 to 212 per year over the period.
The hottest day of the period reached 35.8 °C (on 26 June 2010) and the coldest -43.9 °C (on 8 January 2001).
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
BulganBulgan
- coords
- 48.81°, 103.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-0.5°C
Average daily high
5.9°C
Average daily low
-6.6°C
Annual rainfall
408mm
Sunshine / day
9.9h
Mean relative humidity
62%
Average peak wind
14.3km/h
Seasonal range
37.8°C
Frost days (< 0 °C)
222 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
77 d/yr
Annual snowfall
59.2 cm
Average feels-like high
2.4 °C
Average feels-like low
-10.4 °C
Average peak gust
30.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °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
35.8 °C
26 June 2010
Coldest day
-43.9 °C
8 January 2001
Wettest day
59 mm
23 August 2007
Windiest day
49.0 km/h
6 April 2001
Strongest gust
99.4 km/h
6 April 2001
Hottest feels-like
36.5 °C
24 July 1999
Coldest feels-like
-49.0 °C
8 January 2001
Snowiest day
20.8 cm
5 October 1947
Sunniest day
15.5 h
18 June 2025
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 | -9.5 °C | +3.9 °C | 2 mm | +0 mm |
| Feb | -7.2 °C | +2.0 °C | 3 mm | -1 mm |
| Mar | 3.7 °C | +4.0 °C | 5 mm | -5 mm |
| Apr | 14.0 °C | +5.2 °C | 7 mm | -18 mm |
| May | 16.8 °C | +0.9 °C | 48 mm | +5 mm |
| Jun | 23.8 °C | +2.8 °C | 37 mm | -34 mm |
| Jul | 25.0 °C | +2.7 °C | 41 mm | -52 mm |
| Aug | 22.4 °C | +1.9 °C | 53 mm | -32 mm |
| Sep | 16.5 °C | +1.4 °C | 73 mm | +27 mm |
| Oct | 2.7 °C | -4.0 °C | 12 mm | -8 mm |
| Nov | -3.2 °C | +1.4 °C | 23 mm | +14 mm |
| Dec | -10.7 °C | +1.4 °C | 0 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 Bulgan?
Bulgan has a dry-winter subarctic climate (Köppen Dwc). Over 1940-2025, the average annual temperature is -0.5 °C and it receives 408 mm of precipitation per year.
What is the hottest day ever recorded in Bulgan?
The hottest day measured in Bulgan between 1940 and 2025 was 26 June 2010, reaching 35.8 °C.
What is the coldest day in Bulgan?
The coldest day measured in Bulgan between 1940 and 2025 was 8 January 2001, at -43.9 °C.
Does it snow in Bulgan?
Yes. Bulgan gets on average 59.2 cm of snow per year and has around 222 frost days.
Has the climate of Bulgan warmed?
Yes: Bulgan warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bulgan?
The wettest day measured in Bulgan between 1940 and 2025 was 23 August 2007, with 59 mm of rain in 24 hours.
What was the windiest day in Bulgan?
The windiest day measured in Bulgan between 1940 and 2025 was 6 April 2001, with winds reaching 49.0 km/h.
What is the warmest month in Bulgan?
The warmest month in Bulgan is July (17.3 °C on average); the coldest is January (-20.5 °C).
How much does it rain in Bulgan?
Bulgan receives on average 408 mm of precipitation per year, spread over about 77 rainy days.
Is it sunny in Bulgan?
Bulgan gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bulgan?
The heaviest 24-hour snowfall measured in Bulgan between 1940 and 2025 was 5 October 1947, with 20.8 cm.
Are there tropical nights in Bulgan?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bulgan.
What was the most extreme apparent temperature in Bulgan?
In Bulgan, between 1940 and 2025, the highest apparent temperature reached 36.5 °C on 24 July 1999, and the lowest was -49.0 °C on 8 January 2001.
Compare Bulgan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bulgan