Mianyang is warmest in July, averaging 30° by day and 21° at night. The wettest month is July with 267 mm, and the year brings about 1058 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 9° | -0° | 6 mm | 10.2 h | Cool |
| February | 11° | 2° | 14 mm | 10.9 h | Cool |
| March | 18° | 7° | 31 mm | 11.8 h | Sightseeing |
| April | 22° | 12° | 69 mm | 12.8 h | Sightseeing |
| May | 26° | 15° | 78 mm | 13.6 h | Beach weather |
| June | 30° | 19° | 96 mm | 14.0 h | Beach weather |
| July | 30° | 21° | 267 mm | 13.9 h | Rainy season |
| August | 29° | 21° | 248 mm | 13.2 h | Rainy season |
| September | 26° | 17° | 150 mm | 12.2 h | Mild |
| October | 19° | 12° | 78 mm | 11.2 h | Sightseeing |
| November | 15° | 7° | 15 mm | 10.4 h | Mild |
| December | 9° | 1° | 6 mm | 10.0 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: May and June — highs around 28°, nights no colder than 15°, and at most 96 mm of rain in a month.
Walking the city: March, April and October — highs of 18–22° and no more than 78 mm of rain a month.
Wet season: July and August — up to 267 mm in a single month.