Datong is warmest in July, averaging 30° by day and 16° at night. The wettest month is August with 146 mm, and the year brings about 524 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | -3° | -16° | 3 mm | 9.4 h | Cool |
| February | 2° | -13° | 8 mm | 10.4 h | Cool |
| March | 10° | -5° | 22 mm | 11.7 h | Cool |
| April | 16° | 0° | 33 mm | 13.1 h | Sightseeing |
| May | 23° | 7° | 34 mm | 14.2 h | Sightseeing |
| June | 28° | 13° | 63 mm | 14.8 h | Beach weather |
| July | 30° | 16° | 109 mm | 14.6 h | Mild |
| August | 27° | 14° | 146 mm | 13.6 h | Mild |
| September | 22° | 8° | 60 mm | 12.2 h | Sightseeing |
| October | 14° | 0° | 25 mm | 10.9 h | Mild |
| November | 6° | -7° | 18 mm | 9.7 h | Cool |
| December | -4° | -14° | 3 mm | 9.2 h | Cool |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: June — highs around 28°, nights no colder than 13°, and at most 63 mm of rain in a month.
Walking the city: April, May and September — highs of 16–23° and no more than 60 mm of rain a month.