Climate at a glance · Zhangjiagang
Annual mean63°day and night
Precipitation50.55 ina year
Warmest monthJulyavg high 91°
Coldest monthJanuaryavg low 32°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
50.55 in a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 48° | 50° | 63° | 72° | 79° | 86° | 91° | 91° | 84° | 73° | 64° | 52° |
| Avg low | 32° | 36° | 45° | 54° | 61° | 70° | 79° | 79° | 72° | 59° | 48° | 36° |
| Precip, in | 1.42 | 2.44 | 3.23 | 2.91 | 4.21 | 8.70 | 11.02 | 4.57 | 5.79 | 3.35 | 2.05 | 0.87 |
| Wet days | 5 | 9 | 8 | 8 | 9 | 14 | 17 | 14 | 13 | 10 | 6 | 5 |
| Sunshine | 6.9 h | 5.8 h | 7 h | 7.8 h | 8.2 h | 7.4 h | 9.2 h | 9.9 h | 8.3 h | 7.3 h | 7.3 h | 7.4 h |
| Humidity | 70% | 73% | 71% | 68% | 69% | 77% | 79% | 77% | 81% | 76% | 73% | 68% |
| Sea temperature | 44° | 43° | 50° | 62° | 72° | 79° | 89° | 90° | 88° | 78° | 63° | 52° |
| Daylight | 10 h 20 | 11 h 03 | 11 h 59 | 12 h 58 | 13 h 47 | 14 h 12 | 14 h 00 | 13 h 17 | 12 h 22 | 11 h 23 | 10 h 33 | 10 h 06 |
| UV index (clear sky) | 5 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 9 | 7 | 5 | 4 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
31.8650°N, 120.5390°E