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Weather in Shanghai for September 2025

Your guide to Shanghai weather in September - trends and predictions

    Official Weather Alert ⚠️

  • High Temperature Warning - See hour by hour.

    • Temperatures

  • So far, September 2025 in Shanghai shows a warmer trend than usual by 2.2 °C.

  • Expect cooler weather in the next days in Shanghai with the forecast suggesting a temperature of 27.9 °C, lower than the historical average.

  • In general, the average temperature in Shanghai at the beginning of September is 31.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26 °C by the end of September.

    • Rain 🌧️

  • Shanghai experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 193.9 mm.

    • More

  • Is September a good time to visit Shanghai? check out the best time to travel to Shanghai page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/23°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Shanghai Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
33°
2
Light rain shower
31°
3
Patchy rain possible
30°
4
Moderate or heavy rain shower
32°
5
Patchy rain possible
31°
6
Moderate or heavy rain shower
33°
7
Partly cloudy
33°
8
Patchy rain possible
32°
9
Moderate or heavy rain shower
31°
10
Light rain shower
30°
11
Moderate or heavy rain shower
30°
12
Patchy rain possible
30°
13
Moderate or heavy rain shower
28°
14
Moderate or heavy rain shower
28°
15
Moderate or heavy rain shower
28°
16
Weather Alert Sunny
36°
17
Weather Alert Patchy rain possible
34°
18
Patchy rain possible
28°
19
Overcast
28°
20
Patchy rain possible
25°
21
Partly cloudy
29°
22
Patchy rain possible
29°
23
Moderate rain
27°
24
Moderate rain
25°
25
Moderate rain
24°
26
Patchy rain possible
22°
27
Patchy rain possible
26°
28
Sunny
28°
29
Sunny
29°
30
Overcast
28°

Temperatures trend during September in Shanghai

See the weather trend as well as the moving average line

September weather in Shanghai day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 33° /24° 2.2 mm 8
2 Sept. Light rain shower
Light rain shower
 31° /24° 5.2 mm 7
3 Sept. Patchy rain possible
Patchy rain possible
 30° /24° 8 mm 6
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 3.4 mm 7
5 Sept. Patchy rain possible
Patchy rain possible
 31° /24° 2.2 mm 7
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 1.7 mm 8
7 Sept. Partly cloudy
Partly cloudy
 33° /24° 1 mm 7
8 Sept. Patchy rain possible
Patchy rain possible
 32° /24° 1.1 mm 7
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 7.3 mm 7
10 Sept. Light rain shower
Light rain shower
 30° /23° 5.6 mm 7
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /23° 12.5 mm 7
12 Sept. Patchy rain possible
Patchy rain possible
 30° /24° 24.6 mm 6
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /23° 22 mm 6
14 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /23° 20.6 mm 6
15 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /23° 7.2 mm 6
16 Sept. Sunny
Sunny
 36° /27° 0 mm 2
17 Sept. Patchy rain possible
Patchy rain possible
 34° /27° 1.2 mm 1.6
18 Sept. Patchy rain possible
Patchy rain possible
 28° /25° 0.7 mm 0.9
19 Sept. Overcast
Overcast
 28° /24° 0 mm 1.1
20 Sept. Patchy rain possible
Patchy rain possible
 25° /24° 0.2 mm 1.3
21 Sept. Partly cloudy
Partly cloudy
 29° /23° 0 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
 29° /24° 1.3 mm 6
23 Sept. Moderate rain
Moderate rain
 27° /24° 8.8 mm 6
24 Sept. Moderate rain
Moderate rain
 25° /24° 11.2 mm 5
25 Sept. Moderate rain
Moderate rain
 24° /22° 9.1 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 22° /22° 3.2 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 26° /22° 0.6 mm 5
28 Sept. Sunny
Sunny
 28° /20° 0 mm 6
29 Sept. Sunny
Sunny
 29° /20° 0 mm 6
30 Sept. Overcast
Overcast
 28° /22° 1 mm 6
Next
Important Notice
Our weather forecast for Shanghai in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Shanghai forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Shanghai weather in September vs August vs October

Compare September weather in Shanghai with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures33°/26°29°/23°23°/17°
Rainfall132 mm194 mm49 mm
Wind14.9 km/h17.1 km/h16.3 km/h
Humidity73%76%66%
Rainy days23 days21 days13 days
Dry days8 days9 days18 days

Planning a trip to Shanghai? Discover the best time to visit

Shanghai in September - FAQ

What are the expected maximum and minimum temperatures in Shanghai during September?
During September, expect a variety of temperatures with highs around 29° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Shanghai during September?
Significant rainfall exceeding 193.9 mm is expected in Shanghai during September, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Shanghai during September?
The average wind speed in Shanghai during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Shanghai in September?

As you prepare for your trip to Shanghai in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Shanghai, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

September rainfall patterns in Shanghai

Explore the daily rainfall trends and prepare for Shanghais September weather 💧

UV exposure in Shanghai during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Shanghai
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Shanghai Municipality

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Location coordinates Where is Shanghai?

Get accurate weather forecasts for Shanghai, located at latitude 31.222 and longitude 121.458. Stay updated with localized weather information tailored for Shanghai.

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