Climate averages 1991–2020
Mianyang weather
in September.
A warm, wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Mianyang: daytime highs average 25.1°C and nights cool to about 18.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 142 mm of rain on roughly 13 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average September day.
The nearest other city in this atlas is Luojiang (25 km away). In September its highs average 24.6°C, about as warm as Mianyang, with 133 mm of rain.
Among the 884 cities listed in China, Mianyang ranks 596th of 884 for the warmest September highs and joint 732nd of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Mianyang is 0.6°C cooler than that mean.
From September to October, average highs fall by 4.9°C to 20.3°C, and monthly rainfall falls from 142 mm to 49 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mianyang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.6°C2.3°C | 2.3°C | 9.0 | 2.7 | 10.310 h |
| February | 12.1°C4.5°C | 4.5°C | 12 | 3.1 | 11.011 h |
| March | 16.7°C8.1°C | 8.1°C | 22 | 5.2 | 12.012 h |
| April | 22.7°C12.9°C | 12.9°C | 39 | 6.6 | 12.913 h |
| May | 26.7°C17.2°C | 17.2°C | 66 | 9.5 | 13.714 h |
| June | 29.0°C20.6°C | 20.6°C | 122 | 11.1 | 14.214 h |
| July | 29.8°C22.4°C | 22.4°C | 257 | 18.9 | 14.014 h |
| August | 29.4°C22.0°C | 22.0°C | 214 | 17.3 | 13.313 h |
| September, selected | 25.1°C18.8°C | 18.8°C | 142 | 13.4 | 12.412 h |
| October | 20.3°C14.4°C | 14.4°C | 49 | 9.2 | 11.411 h |
| November | 15.7°C9.3°C | 9.3°C | 21 | 5.0 | 10.611 h |
| December | 10.8°C4.0°C | 4.0°C | 7.6 | 2.5 | 10.110 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Luojiang in SeptemberChina · 25 kmHigh 24.6°C · Low 18.7°C · 133 mm rain
- Jiangyou in SeptemberChina · 33 kmHigh 24.3°C · Low 18.6°C · 164 mm rain
- Mianzhu, Deyang, Sichuan in SeptemberChina · 46 kmHigh 23.1°C · Low 18.4°C · 152 mm rain
- Deyang in SeptemberChina · 47 kmHigh 25.0°C · Low 19.0°C · 133 mm rain
- Pingwu County in SeptemberChina · 105 kmHigh 22.5°C · Low 17.5°C · 204 mm rain
- Chengdu in SeptemberChina · 107 kmHigh 25.5°C · Low 19.3°C · 134 mm rain
- Suining in SeptemberChina · 136 kmHigh 26.8°C · Low 20.1°C · 115 mm rain
- Ziyang in SeptemberChina · 150 kmHigh 26.1°C · Low 19.8°C · 116 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Mianyang) is explained once on the Mianyang year overview and on the Sources, method and limits page.