Our weather and climate analysis offers a detailed understanding of average weather patterns for locations across the globe. Derived from 26 years of historical simulated weather data from ECMWF, it provides valuable insights into typical weather conditions, including air temperature, humidity, precipitation, cloud cover and wind. It is important to note the data is not observational, but rather derived from climate reanalysis.
Our database was last updated in January 2026, and current weather and climate guides are derived from an hourly dataset spanning 26 years (2000 to 2025). Our database contain modified Copernicus Climate Change Service information for these years. Refer to our Terms for full acknowledgements and disclaimers.
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Discover if upcoming months are expected to be warmer, colder, wetter, or drier than average
What is the best time to visit Shanghai to enjoy the optimal weather conditions?
This quick reference weather table contains a summary of the annual climate trends in Shanghai. It contains key metrics, including average monthly high & low temperatures, rainfall, humidity and UV index. The data is presented on a monthly basis, allowing you to see how each these weather components change throughout the year.
Shanghai's long-term climate patterns earn these Weather Badges.
Explore the most extreme weather events in Shanghai over the past 26 years, including record highs and lows for temperatures, rainfall, and wind speeds. This data is sourced from the latest ERA5 reanalysis model spanning 2000 to 2025.
Explore weather patterns in areas close to Shanghai, China
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Use our Climate Finder to search locations by their temperature and humidity patterns.
Weather guides, climate insights, and travel planning stories that talk about Shanghai.
Shanghai exhibits a humid subtropical climate characterized by distinct seasonal shifts. WeatherBox data shows that summers are intensely hot, with the average daily high reaching 32.1°C (89.8°F) in the warmest month. Winters are cold and damp, where average daily lows drop to 2.7°C (36.9°F), though the thermometer rarely falls below -1.9°C (28.6°F). The city sees a significant thermal variance of 23.6°C (42.5°F) between the seasonal extremes, requiring a versatile wardrobe for residents and visitors.
Heavy precipitation defines the summer months, contributing to the region's oppressive humidity. The wettest month records an average rainfall of 250 mm (10 in), driving the total annual accumulation to 1,278 mm (50 in). Atmospheric moisture is persistent; the average relative humidity peaks at 81.8, and even in the driest month, humidity levels average 70.8. This moisture creates a muggy atmosphere that persists for much of the year, particularly during the plum rain season.
Sunshine availability varies, with the brightest month averaging 253.4 of sun. Winds generally blow from the SSE, with average speeds topping out at 13.9 km/h (8.7 mph). During the height of summer, the average peak UV Index is 7.2, indicating a need for sun protection. View the advanced weather charts on WeatherBox to visualize these statistics in greater detail.