Bayan Nur climate

Name: Bayan Nur
Address: CN

Bayan Nur is warmest in July, with average highs of 32 °C, and coldest in January, when nights average -15 °C. August is the wettest month (51 mm) and January the driest (0.8 mm). Figures are 1991–2020 climate normals.

Across a full year Bayan Nur averages 194 mm of rain, 116 days above 25 °C and 162 days below freezing.

China · 1,050 m elevation · population 1,760,000 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 32 °C
Coldest month January -15 °C
Driest month January 1 mm
Wettest month August 51 mm
Least cloud December 24 % cloud
Hottest on record July 40 °C
Coldest on record January -26 °C

What to expectBayan Nur through the year

Bayan Nur has a clear annual cycle: average daily highs run from -3.0 °C in January to 32 °C in July, a swing of 35 °C in mean temperature across the year.

Counted across a normal year, 116 days a year reach 25 °C, 55 of them reach 30 °C, 162 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in July.

Rain is strongly seasonal. August averages 51 mm against 1 mm in January — 62 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-3.0 °C	1 mm	28 %
February	2.3 °C	2 mm	33 %
March	9.9 °C	6 mm	38 %
April	18.2 °C	8 mm	41 %
May	24.7 °C	15 mm	44 %
June	29.7 °C	25 mm	48 %
July	31.5 °C	42 mm	45 %
August	29.4 °C	51 mm	40 %
September	23.9 °C	31 mm	37 %
October	16.0 °C	9 mm	28 %
November	6.0 °C	3 mm	26 %
December	-1.9 °C	1 mm	24 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	-3.0 °C	-15.0 °C	-9.0 °C	9.4 °C	-26.5 °C	0	0	31
February	2.3 °C	-10.8 °C	-4.1 °C	16.7 °C	-23.7 °C	0	0	28
March	9.9 °C	-4.3 °C	2.9 °C	26.9 °C	-15.2 °C	0	0	27
April	18.2 °C	3.0 °C	10.9 °C	33.1 °C	-7.8 °C	3	0	8
May	24.7 °C	10.3 °C	17.9 °C	36.6 °C	-3.4 °C	15	5	0
June	29.7 °C	16.2 °C	23.3 °C	39.7 °C	7.4 °C	26	15	0
July	31.5 °C	19.1 °C	25.6 °C	40.1 °C	10.3 °C	30	21	0
August	29.4 °C	17.0 °C	23.3 °C	37.5 °C	7.8 °C	27	14	0
September	23.9 °C	10.7 °C	17.4 °C	36.1 °C	-0.1 °C	13	1	0
October	16.0 °C	2.3 °C	9.2 °C	30.0 °C	-8.8 °C	1	0	9
November	6.0 °C	-5.4 °C	0.1 °C	20.1 °C	-17.8 °C	0	0	28
December	-1.9 °C	-12.2 °C	-7.1 °C	12.0 °C	-26.0 °C	0	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	1 mm	0	9.6 h/day	28 %	45 %	15 km/h
February	2 mm	1	11 h/day	33 %	37 %	17 km/h
March	6 mm	1	12 h/day	38 %	32 %	20 km/h
April	8 mm	1	13 h/day	41 %	27 %	22 km/h
May	15 mm	3	14 h/day	44 %	28 %	22 km/h
June	25 mm	4	15 h/day	48 %	35 %	20 km/h
July	42 mm	5	15 h/day	45 %	45 %	18 km/h
August	51 mm	6	14 h/day	40 %	50 %	17 km/h
September	31 mm	5	12 h/day	37 %	48 %	17 km/h
October	9 mm	2	11 h/day	28 %	43 %	17 km/h
November	3 mm	1	9.9 h/day	26 %	44 %	18 km/h
December	1 mm	0	9.3 h/day	24 %	44 %	17 km/h

How Bayan Nur compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Bayan Nur	32 °C	-15 °C	194 mm	116
Wuhai · China	31 °C	-13 °C	174 mm	113
Baotou · China	30 °C	-17 °C	351 mm	99
Shizuishan · China	31 °C	-11 °C	234 mm	113
Ordos · China	28 °C	-15 °C	406 mm	78
Yinchuan · China	30 °C	-12 °C	261 mm	105
Wuzhong · China	31 °C	-11 °C	249 mm	116

Where Bayan Nur ranks

Ranking	Position	Value
The driest places in Asia in January	16th of 50	0.8 mm
The driest places in Asia in December	17th of 50	1.0 mm
Places with the best weather in Asia in September	24th of 50	95/100
The driest places in Asia in November	41st of 50	3.2 mm

Planning a trip? See the best time to visit Bayan Nur.

QuestionsCommon questions about Bayan Nur’s climate

When is the best time to visit Bayan Nur?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, August, September sit closest to 20 °C on average, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Bayan Nur get?

In July, the warmest month, daily highs average 32 °C. About 55 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average -15 °C in January, the coldest month. A normal year has 162 nights below freezing.

Which month is wettest in Bayan Nur?

August, averaging 51 mm over 6 days with rain. The driest month is January with 1 mm. The year as a whole averages 194 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Bayan Nur rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 40.741°, 107.386° , 1050 m above sea level (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.