Shanghai Weather and Climate: Seasons and Packing

Shanghai has a subtropical monsoon climate with four distinct seasons. The official Shanghai government describes the annual average temperature as 18.8°C in 2024, but that average hides the real experience: hot, humid summers, short and variable springs and autumns, and a damp winter that feels colder than the numbers suggest.

This guide explains what each season is actually like and how to pack. For timing your trip around crowds and holidays, see the best-time-to-visit guide.

Spring: March to May

Spring is warm and often described as the best season for tourism. The official seasonal average is around 11–21°C, but temperatures can swing from chilly mornings to pleasant afternoons. Light jackets are the standard uniform. Frequent drizzle is common, so a compact umbrella or a water-resistant jacket is useful.

The city blooms in spring. The official Shanghai weather guide notes cherry blossoms around Hongkou Football Stadium in March. Parks and streets are at their freshest, and the plane trees in the former French Concession begin to leaf out.

What to pack: layers, a light waterproof jacket, comfortable walking shoes, and a small umbrella. Add a warmer layer for early mornings and cool evenings.

Watch out for: rain that lasts for days, temperature swings, and holiday crowds around Qingming in early April and Labor Day at the start of May.

Summer: June to August

Summer is extremely hot and humid. The official guide notes that the highest temperatures, usually in July and August, frequently rise above 35°C. Afternoon thunderstorms are common and can bring sudden heavy rain and strong wind.

From mid-June to early July, Shanghai enters the plum rain season, a long stretch of continuous rainy or cloudy weather. The official advice is blunt: this is not the most favorable time for travel. If you visit then, plan indoor backup options and accept that your shoes may stay damp.

What to pack: light, breathable clothing; sun protection; a rain jacket or umbrella; quick-drying shoes; a refillable water bottle; and a power bank for long days out. A light layer for aggressive air conditioning is useful indoors.

Watch out for: heat exhaustion, dehydration, mosquitoes, and typhoons. The official guide identifies peak typhoon season as generally late August to mid-September, though storms can occur around that window. For the latest warnings, follow the China Meteorological Administration and the Shanghai government rather than social media.

Autumn: September to November

Autumn is the most comfortable season for many visitors. Temperatures gradually cool from around 25°C in early autumn to about 15°C by the end. The plane trees turn yellow and shed their leaves in November. The official guide calls this an ideal time for outdoor activities such as walking the Bund.

What to pack: light layers, a light jacket for evenings, comfortable walking shoes, and a compact umbrella. Late November can feel genuinely cool, especially in the wind.

Watch out for: typhoon season in late August and early September, and heavy crowds around the National Day holiday in the first week of October. Late October and November are usually calmer.

Winter: December to February

Winter is cold and damp. The official average temperature is 3–11°C, but the humidity makes it feel much colder than a dry day at the same temperature. Snow is rare, and some years pass without any. The coldest period is typically late January to early February, when north winds make gloves, scarves, and hats necessary.

Shanghai's buildings are not always built for a Northern European winter. Indoor heating varies, and a damp chill can follow you into restaurants and museums. Pack warm layers rather than relying on indoor warmth.

What to pack: a warm coat, thermal base layers, gloves, a scarf, a hat, and waterproof shoes. A hot water bottle is a local winter staple if you are staying somewhere with limited heating.

Watch out for: the Spring Festival period, when travel demand is high and some small businesses close. Winter is otherwise a quieter season for international tourism.

How the seasons affect your itinerary

• Spring and autumn are the best times for long walking days, the Bund, gardens, and water towns.
• Summer is best planned around air-conditioned museums, malls, and cafés, with outdoor time in the early morning and evening. The Shanghai Museum's East branch and other indoor sights are good heat escapes; check opening days before you go.
• Winter is good for museums, food, and city walks if you dress properly. Shorter daylight hours mean the Bund is best visited in the afternoon.
• Rainy days happen in every season. Keep one indoor option per day rather than scheduling every hour outdoors.

What to pack in every season

• Comfortable, broken-in walking shoes.
• A compact umbrella or rain jacket.
• A refillable water bottle.
• Sunscreen in summer and on clear days.
• A power bank and a universal adapter. China uses 220V and type A/I plugs; check your device's voltage before using a converter.
• A copy of your passport and insurance details, stored offline.
• Tissues and hand sanitizer; not every public toilet supplies paper.

What the weather does not tell you

Shanghai's humidity is the factor visitors underestimate. A 32°C summer day can feel much hotter, and a 5°C winter day can feel colder than a dry 0°C. Clothing that wicks moisture and layers that you can remove are more useful than a single heavy outfit.

The city also has a rainy season and a typhoon season, not just "good weather" and "bad weather." Build flexibility into your plans, check official warnings, and do not commit to a rigid outdoor schedule months in advance.

The bottom line

For mild weather and the best chance of comfortable sightseeing, aim for late March to May or late September to November. Summer is hot, humid, and stormy; winter is cold and damp but quieter. Pack for layers, rain, and humidity, and check the official forecast before you leave.

The climate averages above are drawn from the Shanghai government's seasonal guide. Weather varies year to year; use a current forecast for the week of your trip.