Shanghai · September
Run in the morning.
Comfortable average high of 81°F, dipping to 70°F at night. Humidity averages 81% — the limiting factor on most runs. Expect 17 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
81° / 70°F
Humidity
81%
Rain days
17/mo
Wind
11 mph
What September feels like in Shanghai
Sunrise
05:38
Mid-month average
Sunset
17:59
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Shanghai in September
The kit for September in Shanghai: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
-7° avg high
-3 rain days
Shanghai in August →
September
81°F avg high
17 rain days
Best: morning
vs October
+9° avg high
+7 rain days
Shanghai in October →
Frequently Asked Questions
What is the best time of day to run in Shanghai in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Shanghai in September?+
Average high 81°F, average low 70°F.
How does September compare to surrounding months in Shanghai?+
Compared to August (avg high 89°F), September is cooler. Compared to October (avg high 73°F), September is warmer.
Does it rain often in Shanghai in September?+
Expect about 17 measurable rain days in September, on average.