Shanghai in September
In September, Shanghai averages 28°C (82°F) during the day and 20°C (68°F) at night, with around 10 days of rain (130 mm total).
ShoulderConditions are warm and beach-friendly. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Shanghai, with some rain to plan around.
How September compares to the rest of the year in Shanghai
September is in the middle of the year for warmth in Shanghai (4th of 12) and moderately rainy compared to the rest of the year (7th of 12). Daytime temperature runs 8°C above the annual average (20°C). September runs 4°C cooler than August (32°C) and cools 6°C in October (22°C).
September sunrise & sunset in Shanghai
Times shown for Shanghai local time (Asia/Shanghai), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Shanghai — September
Golden-hour and blue-hour windows for the 15th of September, in Shanghai's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Shanghai in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Shanghai's popularity.
Crowds & pricing — September in Shanghai
Shanghai is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Shanghai
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Shanghai in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 1°C / 34°F | 50 mm | 9 | 0 |
| February | 10°C / 50°F | 2°C / 36°F | 60 mm | 9 | 0 |
| March | 13°C / 55°F | 5°C / 41°F | 90 mm | 11 | 0 |
| April | 19°C / 66°F | 10°C / 50°F | 95 mm | 12 | 0 |
| May | 24°C / 75°F | 15°C / 59°F | 110 mm | 12 | 0 |
| June | 28°C / 82°F | 20°C / 68°F | 165 mm | 13 | 0 |
| July | 32°C / 90°F | 24°C / 75°F | 145 mm | 11 | 0 |
| August | 32°C / 90°F | 24°C / 75°F | 150 mm | 10 | 0 |
| September | 28°C / 82°F | 20°C / 68°F | 130 mm | 10 | 0 |
| October | 22°C / 72°F | 14°C / 57°F | 70 mm | 8 | 0 |
| November | 16°C / 61°F | 8°C / 46°F | 55 mm | 7 | 0 |
| December | 10°C / 50°F | 3°C / 37°F | 40 mm | 7 | 0 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Shanghai in September →
Frequently asked questions
How hot is Shanghai in September?
In September, Shanghai averages a high of 28°C (82°F) and a low of 20°C (68°F) — generally warm.
Does it rain a lot in Shanghai in September?
September can be fairly wet in Shanghai, with about 10 rainy days on average.
Is September a good time to visit Shanghai?
September is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Shanghai in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Shanghai for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.