Climate averages 1991–2020
Zhoushan weather
in September.
A warm, wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Zhoushan: daytime highs average 26.2°C and nights cool to about 24.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 141 mm of rain on roughly 11 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.
The nearest other city in this atlas is Shenjiamen (10 km away). In September its highs average 26.0°C, about as warm as Zhoushan, with 141 mm of rain.
Among the 884 cities listed in China, Zhoushan ranks joint 484th of 884 for the warmest September highs and joint 729th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Zhoushan is 0.5°C warmer than that mean.
From September to October, average highs fall by 4.1°C to 22.1°C, and monthly rainfall falls from 141 mm to 87 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
Zhoushan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.9°C5.9°C | 5.9°C | 88 | 11.0 | 10.410 h |
| February | 9.2°C6.2°C | 6.2°C | 86 | 10.3 | 11.111 h |
| March | 11.8°C8.6°C | 8.6°C | 142 | 13.7 | 12.012 h |
| April | 15.8°C12.6°C | 12.6°C | 131 | 12.7 | 12.913 h |
| May | 20.7°C17.8°C | 17.8°C | 150 | 12.0 | 13.614 h |
| June | 24.4°C22.0°C | 22.0°C | 263 | 14.5 | 14.014 h |
| July | 28.1°C25.8°C | 25.8°C | 100 | 6.8 | 13.914 h |
| August | 28.8°C26.5°C | 26.5°C | 109 | 9.8 | 13.213 h |
| September, selected | 26.2°C24.0°C | 24.0°C | 141 | 11.4 | 12.412 h |
| October | 22.1°C19.8°C | 19.8°C | 87 | 7.5 | 11.511 h |
| November | 17.6°C14.8°C | 14.8°C | 85 | 9.5 | 10.711 h |
| December | 12.0°C8.9°C | 8.9°C | 81 | 9.1 | 10.310 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
- Shenjiamen in SeptemberChina · 10 kmHigh 26.0°C · Low 23.9°C · 141 mm rain
- Ningbo in SeptemberChina · 64 kmHigh 27.2°C · Low 21.6°C · 153 mm rain
- Fenghua in SeptemberChina · 85 kmHigh 27.3°C · Low 21.4°C · 160 mm rain
- Cixi in SeptemberChina · 95 kmHigh 27.6°C · Low 21.9°C · 122 mm rain
- Yuyao in SeptemberChina · 102 kmHigh 27.4°C · Low 21.3°C · 146 mm rain
- Fengxiang in SeptemberChina · 120 kmHigh 26.8°C · Low 22.2°C · 112 mm rain
- Nanqiao in SeptemberChina · 126 kmHigh 26.9°C · Low 21.8°C · 104 mm rain
- Jinshan in SeptemberChina · 128 kmHigh 27.0°C · Low 22.0°C · 100 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 Zhoushan) is explained once on the Zhoushan year overview and on the Sources, method and limits page.
Shenjiamen lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.