Shanghai has four genuinely distinct seasons — cherry blossoms in late March, plum rains in June, luminous autumn skies in October, and cold damp winters that come with bargain hotel rates. Each has something to offer, and each has something to warn you about.
If you can only pick one month, pick mid-to-late October. Temperatures sit between 15 and 22°C, the sky is a clear deep blue for days at a stretch, humidity drops sharply after the summer, and the Bund skyline is at its sharpest and most photogenic. One catch: book well in advance and arrive after October 7 — the first week is China's National Day Golden Week, when hundreds of millions of domestic travellers move simultaneously and hotel prices peak.
If cherry blossoms are the draw, late March to April is your window — blossoms at Gucun Park and Century Park, mild temperatures around 10–18°C, and significantly thinner crowds than autumn. Summer and winter each have their own logic, but both demand more preparation to get the most from them.
The weather, what it delivers, and what you are trading for it — told straight.
Yu Garden · Spring
Great
Shanghai's spring is genuinely lovely: mild temperatures, the city greening up, and the occasional soft rain that keeps everything fresh rather than oppressive. Cherry blossoms come in late March — Gucun Park in the north holds thousands of trees, Century Park in Pudong is more central. The pink against Shanghai's grey-and-glass streetscape is striking, and you can walk the French Concession's plane-tree avenues in a light jacket.
May is warmer (18–22°C) and still pleasant, though the Labour Day Golden Week (1–5 May) brings a rush of domestic travellers. Plan around it or book well ahead.
Pudong skyline · Summer
Come prepared
Shanghai in summer is hot and humid, and the combination is heavier than the thermometer suggests. From mid-June to early July the city enters Meiyu (梅雨) — the plum rain season — when drizzle and downpours alternate for weeks on end, sometimes without a clear day in between. When the rains finally lift in mid-July, the heat intensifies and typhoons become a real possibility through to September.
It is not without its appeal: fewer international tourists, uncrowded museums and galleries, and hotels that price below peak. If you run cold, or if you simply love cities in the full sweaty flush of summer, Shanghai delivers. But plan your outdoor time carefully and watch the typhoon forecasts.
The Bund skyline · Autumn
The best
This is Shanghai at its clearest and most comfortable. Temperatures settle between 15 and 25°C, humidity drops sharply after the summer, and the sky turns a deep blue that makes every skyline photograph look effortless. The Pudong towers are pin-sharp from the Bund. The French Concession's plane trees turn from green to yellow and amber in late October, and walking Wukang Road or Fuxing Park on a still October morning is one of the city's small pleasures.
Hairy crab season (大闸蟹, Da Zha Xie) begins in September and peaks in October–November. If you have any intention of eating the real thing — steamed fresh from Yangcheng Lake — this is the only time it is possible. Good restaurants fill weeks in advance.
Nanjing Road · Winter
Its own kind of charm
Shanghai gets genuinely cold, and more so than the numbers suggest. Average temperatures run 1–8°C, but the city sits on a coastal plain and cold air off the Huangpu River makes it feel closer to freezing. Snowfall is possible but not common. Indoor heating is inconsistent — some hotels and restaurants are warm; others leave you in your coat. Pack accordingly.
Chinese New Year (late January or February) transforms the city: lanterns, firecrackers in the streets, temples crowded with people praying for the new year. It is festive and beautiful. The flip side: many small restaurants and shops close for 7–14 days, transport is booked solid and expensive, and hotel prices spike. Outside of Chinese New Year, winter is the quietest and cheapest season by a wide margin.
Temperature, rainfall and crowd levels — in one table for easy comparison.
| Month | Temperature | Rain | Crowds | Notes |
|---|---|---|---|---|
| January | 1–8°C | Low | Low | Coldest month · cheapest hotels |
| February | 2–10°C | Low | High (CNY) | Chinese New Year — shops close · transport packed |
| March | 7–15°C | Moderate | Moderate | Cherry blossoms begin late month |
| April | 12–20°C | Moderate | Moderate | Full cherry blossom · ideal walking weather |
| May | 17–25°C | Moderate | High (Golden Week) | 1–5 May: Labour Day crowds and price spike |
| June | 22–30°C | Heavy (plum rain) | Moderate | Meiyu plum rains from mid-month |
| July | 27–35°C | Heavy | Moderate | Hottest and most humid · typhoon risk |
| August | 27–33°C | Heavy | Moderate | Still hot · typhoon season continues |
| September | 21–28°C | Low | Moderate | Hairy crab season begins · weather improving |
| October | 15–22°C | Very low | High (Golden Week) | 1–7 Oct: peak crowds · after 8th: best of the year |
| November | 10–18°C | Low | Moderate | Male hairy crabs peak · autumn foliage |
| December | 4–11°C | Low | Low | Festive lights · low prices · quiet museums |
China's national holidays generate the largest annual human movements on Earth. Here is what that means for your trip.
China's largest holiday. Hundreds of millions of people travel to their home towns and tourist destinations simultaneously. The atmosphere in temples and historic districts is genuinely festive — lanterns, firecrackers, colourful crowds. But hotels charge peak prices, small restaurants and local shops close for 7–14 days, and transport (trains, flights) books out weeks ahead. If you want to experience the festival itself, plan everything well in advance. If you want a normal trip, pick a different time.
China's second major holiday window. Domestic tourism surges; the Bund, Yu Garden and Nanjing Road become difficult to walk through. Hotels fill and prices rise by 30–60%. If you must travel during this period, book accommodation 6–8 weeks ahead and set your alarm for early starts at each sight — crowds build by 10 am and the best light is gone by noon anyway.
The largest Golden Week of the year. An estimated 800 million-plus domestic trips occur in this single week. Shanghai is one of the top destinations. The Bund Promenade and most major sights become extremely crowded — not unpleasant exactly, but walking speed drops to a crawl and any spontaneous photography of the skyline becomes impossible. Hotel prices hit their annual peak. The obvious workaround: arrive on or after October 8. The weather is identical through November — clear, mild, perfect — but the crowds dissolve almost overnight and prices normalise immediately.
These are reasons to time your visit, not reasons to avoid it.
Held every June, this is one of the most significant film festivals in Asia, screening international competition films alongside Chinese cinema at venues across the city. The city has a tangible energy during the festival week. Central hotels and restaurants book up faster than usual — reserve in advance if your dates overlap.
An annual festival held throughout September with street parades, cultural performances and events across the city. It coincides neatly with the start of autumn — when the weather begins to improve — making early September a reasonable choice if you want some added colour to your visit.
This is not an organised festival but it functions as one. Shanghai's obsession with Da Zha Xie — the hairy mitten crabs from Yangcheng Lake — reaches its annual peak in October. Female crabs (orange roe) are best in September and October; males (rich, milky milt) peak in October and November. Steamed and eaten with black Zhenjiang vinegar and pickled ginger, this is one of the singular food experiences of East Asia. Serious restaurants for hairy crabs book out weeks in advance during the peak.
Not exhaustive — just the things that actually matter for Shanghai.
Whatever month you arrive, there is something worth seeing.