Tianshui is warmest in July, averaging 28° by day and 16° at night. The wettest month is July with 140 mm, and the year brings about 695 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 3° | -8° | 3 mm | 9.9 h | Cool |
| February | 7° | -5° | 14 mm | 10.7 h | Cool |
| March | 14° | -1° | 28 mm | 11.7 h | Mild |
| April | 18° | 4° | 63 mm | 12.9 h | Sightseeing |
| May | 23° | 9° | 65 mm | 13.8 h | Sightseeing |
| June | 27° | 13° | 81 mm | 14.3 h | Beach weather |
| July | 28° | 16° | 140 mm | 14.1 h | Mild |
| August | 27° | 15° | 118 mm | 13.3 h | Mild |
| September | 23° | 10° | 90 mm | 12.2 h | Sightseeing |
| October | 15° | 5° | 81 mm | 11.1 h | Mild |
| November | 10° | -1° | 9 mm | 10.2 h | Cool |
| December | 4° | -6° | 3 mm | 9.7 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 27°, nights no colder than 13°, and at most 81 mm of rain in a month.
Walking the city: April, May and September — highs of 18–23° and no more than 90 mm of rain a month.