Bayan Nur climate
Bayan Nur (Inner Mongolia, China) has a cold desert climate (Köppen BWk). The average temperature over the year is 9 °C48 °F, and about 169 mm6.6 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Bayan Nur climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −424 | −164 | −1014 | 10.1 | 31 |
| Feb | 135 | −1112 | −523 | 20.1 | 28 |
| Mar | 1049 | −523 | 236 | 30.1 | 29 |
| Apr | 1966 | 236 | 1151 | 60.2 | 11 |
| May | 2679 | 949 | 1864 | 150.6 | 0 |
| Jun | 3189 | 1661 | 2475 | 281.1 | 0 |
| Jul | 3493 | 1966 | 2679 | 331.3 | 0 |
| Aug | 3188 | 1762 | 2475 | 381.5 | 0 |
| Sep | 2577 | 1050 | 1763 | 301.2 | 0 |
| Oct | 1661 | 134 | 948 | 80.3 | 11 |
| Nov | 542 | −621 | 031 | 40.1 | 28 |
| Dec | −327 | −148 | −817 | 10.1 | 31 |
| Year | 3493 | −164 | 948 | 1696.6 | 169 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 59% | 48% | 2.6 | 9:33 |
| Feb | 46% | 48% | 3.7 | 10:35 |
| Mar | 35% | 45% | 5.0 | 11:49 |
| Apr | 29% | 49% | 6.2 | 13:15 |
| May | 28% | 50% | 6.9 | 14:26 |
| Jun | 33% | 57% | 6.8 | 15:05 |
| Jul | 39% | 58% | 6.3 | 14:49 |
| Aug | 42% | 54% | 5.8 | 13:47 |
| Sep | 46% | 48% | 4.9 | 12:24 |
| Oct | 44% | 33% | 4.1 | 11:02 |
| Nov | 49% | 35% | 2.9 | 9:51 |
| Dec | 56% | 40% | 2.3 | 9:16 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Bayan Nur is like
The warmest month is July, with an average high of 34 °C93 °F and a low of 19 °C66 °F. The coldest is January, when highs average −4 °C24 °F and lows −16 °C4 °F. The climate is extremely continental — the average temperature swings by 36.3 °C65.4 °F between the coldest and the warmest month.
It is dry, with about 169 mm6.6 in of precipitation per year. The wettest three-month stretch is July–September, which brings 59% of the annual total. Months with less than 20 mm0.8 in on average: October–May. The wettest month is August (38 mm1.5 in), the driest is December (1 mm0.1 in).
Relative humidity ranges from 28% in May to 59% in January. The clearest skies (lowest average cloud amount, 33%) are typical of October. Average wind speed near the ground ranges from 8 km/h (5 mph) in January to 13 km/h (8 mph) in May. Daylight lasts from about 9.3 hours in December to 15.1 hours in June.
A lasting snow cover is typical in January and February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 15 cm).
Best time to visit Bayan Nur
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and September: average highs of 25 °C77 °F to 26 °C79 °F with 15 mm0.6 in to 30 mm1.2 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of −4 °C24 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Bayan Nur weather by month
- January−4 °C24 °F / −16 °C4 °F
- February1 °C35 °F / −11 °C12 °F
- March10 °C49 °F / −5 °C23 °F
- April19 °C66 °F / 2 °C36 °F
- May26 °C79 °F / 9 °C49 °F
- June31 °C89 °F / 16 °C61 °F
- July34 °C93 °F / 19 °C66 °F
- August31 °C88 °F / 17 °C62 °F
- September25 °C77 °F / 10 °C50 °F
- October16 °C61 °F / 1 °C34 °F
- November5 °C42 °F / −6 °C21 °F
- December−3 °C27 °F / −14 °C8 °F
What to pack for Bayan Nur
- Winter (December–February) — highs −424 to 1 °C35 °F, lows −164 to −11 °C12 °F, about 2 mm0.1 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots, an extra layer for the cooler mornings and evenings and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1049 to 26 °C79 °F, lows −523 to 9 °C49 °F, about 8 mm0.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3188 to 34 °C93 °F, lows 1661 to 19 °C66 °F, about 33 mm1.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 542 to 25 °C77 °F, lows −621 to 10 °C50 °F, about 14 mm0.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
How Bayan Nur compares
Compared with Baotou, about 207 km to the east, Bayan Nur is on average 0.7 °C1.2 °F warmer and receives 50% less precipitation (169 mm6.6 in vs 336 mm13 in). The difference is largest in July (1.2 °C2.2 °F warmer).
Of the 547 places in China covered by World Climates, Bayan Nur is the 452nd warmest by annual mean temperature and the 532nd wettest by annual precipitation. See all of them on the China climate page.
Places in other countries with the most similar temperature and rainfall pattern: Atyrau (Kazakhstan, BSk), Astrakhan (Russia, BSk) and Taldykorgan (Kazakhstan, BSk).
Nearby places
- Wuhai 127 km · 10 °C50 °F · 200 mm7.9 in
- Huinong 176 km · 10 °C50 °F · 231 mm9.1 in
- Dawukou 207 km · 11 °C51 °F · 190 mm7.5 in
- Baotou 207 km · 8 °C47 °F · 336 mm13 in
- Shizuishan 213 km · 11 °C51 °F · 190 mm7.5 in
- Ordos 239 km · 2 °C36 °F · 387 mm15 in
- Dongsheng 243 km · 6 °C43 °F · 361 mm14 in
- Salaqi 265 km · 9 °C48 °F · 378 mm15 in
Frequently asked questions
What is the warmest month in Bayan Nur?
July is the warmest month in Bayan Nur, with an average high of 34 °C (93 °F) and an average low of 19 °C (66 °F).
What is the coldest month in Bayan Nur?
January is the coldest month, with an average high of -4 °C (24 °F) and an average low of -16 °C (4 °F).
When does it rain the most in Bayan Nur?
August is the wettest month with about 38 mm (1.5 in) of precipitation; December is the driest with about 1 mm (0.1 in).
What is the best time to visit Bayan Nur?
Judging by long-term averages, the most comfortable months are May and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.