Climate at a glance · Zhangjiagang
Annual mean17°day and night
Precipitation1284 mma year
Warmest monthJulyavg high 33°
Coldest monthJanuaryavg low 0°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
1284 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 9° | 10° | 17° | 22° | 26° | 30° | 33° | 33° | 29° | 23° | 18° | 11° |
| Avg low | 0° | 2° | 7° | 12° | 16° | 21° | 26° | 26° | 22° | 15° | 9° | 2° |
| Precip, mm | 36 | 62 | 82 | 74 | 107 | 221 | 280 | 116 | 147 | 85 | 52 | 22 |
| 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 | 7° | 6° | 10° | 17° | 22° | 26° | 31° | 32° | 31° | 26° | 17° | 11° |
| 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