The Li River: A Journey Through China’s Most Breathtaking Landscape
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Jiashan Weather in September
September in Jiashan brings high temperatures, with daytime highs of 29°C (84°F) and nights around 22°C (72°F). Quite a bit of rainfall is expected, around 105 mm (4.1 in), so pack an umbrella.
Rainfall in Jiashan in September
You can typically expect 13 days of rain this month, averaging around 105 mm (4.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Jiashan in September
Temperatures in Jiashan in September top out at 29°C (84°F) and drop to 22°C (72°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Jiashan in September
The city usually sees around 172 hours of sunlight, indicating a moderately sunny period.If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Jiashan Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
29°C (84°F)
Chance of Rain
45%
Precipitation
105 mm (4.1 in)
Rainy days
13 days
Humidity
74% *
Sunshine
172 hours *
Percentage Sunshine
*
* Data from: Suzhou, China (59 KM, 37 Miles).
Jiashan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Jiashan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jiashan typically drop from around 30°C (86°F) at the start of September to approximately 26°C (79°F) by the end. Nights are warm, with lows typically ranging from 19°C (66°F) to 24°C (75°F).
Average temperatures in September
Historical weather records for Jiashan in September
Browse day-by-day weather records for Jiashan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jiashan historical weather extremes in September
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Jiashan.
- On September 6, 2025, temperatures climbed to 38°C (100°F), marking the warmest September day on record.
- On September 11, 1984, Jiashan saw its coldest September day with temperatures maxing out at 19°C (66°F).
- The coldest night in September in Jiashan was on September 27, 1988, with a minimum of 11°C (52°F).
Best Places in China in September
Find out more about the weather in China and which places have the best travel conditions in this month. See all of China in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Jiashan in September
Warm but pleasant conditions in Jiashan in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Jiashan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Jiashan 3-Day Forecast
More climate data for Jiashan
Temperature Rainfall Sunshine Humidity
See the full Jiashan climate overview or explore weather in China.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The Li River: A Journey Through China’s Most Breathtaking Landscape
Go to China's Zhangjiajie National Park with the highest, the fastest, largest-loaded outdoor elevator in the world
You won't find this unique landscape anywhere else in the world. Thousands of floating mountains overgrown with trees at the top dominate this fairy tale landscape.
Go to Xinjiang in China
In Xinjiang you get to see a mix of East and Central Asia. An experience that you might want to add to your bucket list. You can travel through the province as if you are following an ancient silk route.
Mount Kailash
The best time for a Kailash tour/trekking is from mid-May to mid-October when the temperature is most pleasant. It is warm, dry and sunny in that period.