Zhangjiagang Temperature by Month
Zhangjiagang in Jiangsu, China sees significant seasonal temperature differences, with daytime highs between 9°C (48°F) in January and 33°C (91°F) in July, averaging 22°C (72°F) annually. Explore the full monthly breakdown below.
Zhangjiagang Monthly Temperatures
The climate in Zhangjiagang is dynamic, ranging widely from chilly in winter to very warm in summer. Nights are significantly colder, with lows dropping from 26°C (79°F) in July to 1°C (34°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Zhangjiagang by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 225 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Zhangjiagang vs China
The map below shows the annual temperature across China. You can also select individual months if you want to compare a specific time of year.
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Zhangjiagang vs World: Temperature Compared
Zhangjiagang's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Zhangjiagang?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Zhangjiagang, January is the coolest month, with average highs of 9°C (48°F) and humidity around 75% — considered high. In July, the warmest month, temperatures average 33°C (91°F) with 78% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Zhangjiagang's weather — including monthly rainfall, sunshine hours, and humidity — visit our Zhangjiagang climate page.
