Shanghai Weather in September
In September, Shanghai averages a high of 28°C (82°F) and a low of 21°C (71°F), from 48 years of daily records (1971–2026).
28°C
Average high
82°F
21°C
Average low
71°F
38°C
Record high
101°F · September 7, 1995
11°C
Record low
51°F · September 29, 1972
What September Is Like in Shanghai
- September in Shanghai has become 2.5°C (4.5°F) warmer on average: the 2011–2025 average against 1970–1989.
- September 2025 was the 2nd warmest September in 48 years of records, 3.4°C (6.1°F) above the long-run average.
- The coldest September reading, 11°C (51°F) on September 29, 1972, has not been matched in 54 years.
- The September heat record, 38°C (101°F) on September 7, 1995, has stood for 31 years.
At least 1 mm of rain falls on 29% of September days, and the month averages 126 mm in total.
Warmest: 2024 (31.7°C)Latest: 2025 (30.6°C)10-year averageLong-run average (27.9°C)
Look Up a Day in September
See the weather in Shanghai on any September date, year by year.
Source: NOAA GHCN-Daily, Shanghai/Hongqiao (1971–2008); Shanghai (1999–2026). Averages cover 1971–2026. How we compute this