| Wuzhai County | |
| Postal Code Type: | Postal code |
| Postal Code: | 036200 |
| Settlement Type: | County |
| Image Map1: | Location of Xinzhou Prefecture within Shanxi (China).png |
| Map Caption1: | Xinzhou in Shanxi |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Shanxi |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Xinzhou |
| Population Density Km2: | auto |
| Coordinates: | 38.9108°N 111.847°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Wuzhai is a county of northwestern Shanxi province, China. It is under the administration of Xinzhou City.
Wuzhai has a monsoon-influenced, humid continental climate (Köppen Dwb), with cold and very dry winters, and warm, humid summers. The monthly 24-hour average temperature ranges from NaN°C in January to 20.2°C in July, and the annual mean is 5.4°C. June thru September accounts for nearly three-fourths of the of annual precipitation. Due to the high elevation and dry climate, the diurnal temperature variation averages annually.