SeasonScore
Shanghai, China
Photo: Wikimedia Commons · CC BY 2.0

China

Shanghai in September

🍂 Autumn

Warm, humid and often rainy. Watch for hazy air and tropical cyclone risk.

🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics · N95 mask for hazy days

Best months: May (8.4), Nov (8.3), Oct (8.2)

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Why September scores 6.9What goes into the score

How it works
🌡️ 29° / 23°C🌧️ 132 mm💧 dew pt 21°🍃 PM2.5 52
  • Weather comfort7.7
    • ✓Warm (29°C highs / 23°C lows)
    • !Very humid/sticky (dew point 21.3°C)
    • !Wet: ~132 mm rain, ~4 heavy-rain days
  • Air quality3.9
    • !Unhealthy (PM2.5 ~52 µg/m³) — score capped at 6.9
  • Seasonal hazards8.5
    • !Tropical cyclone: Peak of the Western Pacific typhoon season
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut September side by side with another month
SepMay
Score6.9 Good8.4 Very good
Season🍂 Autumn🌷 Spring
High / low29° / 23°26° / 18°
Rain132 mm91 mm
Humiditydew pt 21°dew pt 16°
PM2.552 µg/m³38 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Shanghai weather-station normals. Rainfall: Shanghai weather-station normals (national met service).

Holidays & crowdsSeptember 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

Other public holidays: Mid-Autumn Festival (15 Sep)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Shanghai

  • Snowy daysTypical dates
    Snow likely Jan–Feb (most in Jan: ~2 days)

    Average number of days with snowfall at Shanghai.

    Source: Shanghai weather-station normals (national weather service, via Wikipedia climate table)

Explore ShanghaiEvents, sights, food & souvenirs

Check event dates locally

China's largest city on the Huangpu River, known for the colonial-era Bund, the Pudong skyline, shikumen lane houses and a strong food culture.

Events in September
Mid-Autumn FestivalDate varies15th day of the 8th lunar month — September or early October

Families share mooncakes and view the full moon.

Why go: A public holiday; often near the October Golden Week holiday.

Where: Citywide

Coming up later

Chinese New YearDate variesLunar calendar — late January to mid-February, date moves each year

The most important family holiday, with temple visits and decorations.

Why go: Transport and hotels are very busy; some small businesses close.

Where: Citywide

Lantern FestivalDate varies15th day of the first lunar month — February or early March

Lantern displays mark the end of New Year celebrations.

Why go: Yu Garden is extremely crowded.

Where: Yu Garden and temples

Shanghai International Film FestivalDate variesUsually June

One of Asia's major film festivals.

Why go: Tickets sell quickly.

Where: Cinemas across the city