Question 1

When is the best weather in Shanghai?

Accepted Answer

The best weather in Shanghai occurs in May, when pleasant temperatures combine with abundant sunshine and manageable rainfall. Based on 2024 weather data, May stands out as the optimal month for visiting or enjoying outdoor activities in the city.

During May 2024, Shanghai experienced an average temperature of 19.6°C (67.3°F), which falls perfectly within the comfortable range for most activities. The month recorded 284.3 hours of sunshine, the highest among the spring and autumn shoulder seasons, and precipitation totaled just 84.7mm (3.3 inches), significantly lower than the summer months.

October also offers favorable conditions in Shanghai, with similar average temperatures of 19.7°C (67.5°F). However, October 2024 saw more rainfall at 126.8mm (5.0 inches) and fewer sunshine hours at 140.6, making May the superior choice for reliable weather.

Summer months should generally be avoided if comfortable weather is a priority. June through August 2024 brought hot conditions averaging 27.9°C (82.3°F) and heavy rainfall totaling 520.0mm (20.5 inches), with June alone receiving 306.3mm during the monsoon season.

For visitors planning a trip to Shanghai, late April through May offers the ideal balance of warm but not oppressive temperatures, ample sunshine for sightseeing, and relatively dry conditions compared to the humid summer and unpredictable autumn weather.

Question 2

How much total rainfall does Shanghai get per year?

Accepted Answer

Shanghai receives substantial annual rainfall, with 2024 data showing a total of 1,460.4 mm (57.5 inches) of precipitation across the year.

The city's rainfall follows a distinct seasonal pattern. Summer (June to August) is the wettest period, accounting for 520.0 mm (20.5 inches) of the annual total. June 2024 was particularly rainy, recording 306.3 mm (12.1 inches)—representing about 21% of the entire year's precipitation in a single month. This coincides with the East Asian monsoon season, known locally as the plum rain season (梅雨).

Autumn (September to November) brings the second-highest rainfall at 446.4 mm (17.6 inches), while spring (March to May) contributes 297.2 mm (11.7 inches). Winter months see the least precipitation, with just 196.8 mm (7.7 inches) combined.

The driest month in Shanghai during 2024 was December, with only 15.5 mm (0.6 inches) of rainfall. The monthly average across the year was 121.7 mm (4.8 inches).

For visitors planning trips to Shanghai, packing rain gear is essential during the summer monsoon months. The drier winter period from December through February offers more predictable conditions, though temperatures are cooler. Spring and autumn provide a balance of moderate rainfall and pleasant temperatures for exploring the city.

Question 3

What was the hottest day in Shanghai in 2024?

Accepted Answer

The hottest day in Shanghai in 2024 was August 3rd, when temperatures reached a scorching 39.7°C (103.5°F). This extreme heat came during an intense early August heat wave that brought several consecutive days of temperatures exceeding 35°C (95°F).

On August 3, 2024, Shanghai experienced its peak summer heat with a daily mean temperature of 33.1°C (91.6°F) and nighttime lows remaining uncomfortably warm at 28.0°C (82.4°F). The city recorded 38 days in 2024 where the maximum temperature exceeded 35°C (95°F), with August alone accounting for 21 of these extreme heat days.

The five hottest days of 2024 all occurred in early August: August 3rd (39.7°C/103.5°F), August 11th (39.5°C/103.1°F), August 4th (39.3°C/102.7°F), August 9th (39.1°C/102.4°F), and August 2nd (38.8°C/101.8°F). This clustering of extreme temperatures reflects the typical pattern of Shanghai's most intense summer heat occurring in late July through mid-August.

For visitors planning to travel to Shanghai, these temperature extremes highlight why early August is the hottest period to avoid. The summer 2024 average maximum temperature reached 32.7°C (90.9°F), making air-conditioned indoor activities and early morning or evening outdoor plans essential during this season.

Question 4

What is the weather like in Shanghai in December?

Accepted Answer

December in Shanghai brings cool, dry winter weather with average temperatures of 6.8°C (44.3°F). Based on 2024 data, this is one of the city's driest months, making it a comfortable time to explore despite the chill.

During December 2024, daily highs in Shanghai averaged 11.1°C (51.9°F), while nighttime lows dropped to around 3.3°C (37.9°F). The month saw occasional mild spells, with the warmest day reaching 21.0°C (69.8°F) on December 2nd. However, cold snaps can push temperatures below freezing—the coldest night in December 2024 recorded -1.5°C (29.3°F) on December 29th, with only 3 frost days throughout the month.

Precipitation is minimal in December. Shanghai received just 15.5mm (0.6 inches) of rainfall across only 4 rainy days in December 2024. The month offered 197.3 total sunshine hours, averaging 6.4 hours of sunshine per day, which is reasonable for winter months.

Humidity levels averaged 68.5% with light winds around 8.2 km/h (5.1 mph). For visitors planning a December trip to Shanghai, pack warm layers for chilly mornings and evenings, but expect mostly dry conditions ideal for sightseeing. The comfortable humidity and lack of heavy rain make December a pleasant month for exploring Shanghai's outdoor attractions and historic neighborhoods.

Question 5

What is the weather like in Shanghai in autumn?

Accepted Answer

Shanghai experiences mild and gradually cooling weather during autumn 2024 (September to November), with an average temperature of 20.4°C (68.8°F) across the season.

The autumn months show a clear temperature progression in Shanghai. September remained warm with an average of 27.1°C (80.8°F), while October cooled to 19.7°C (67.5°F), and November brought crisp conditions at 14.5°C (58.1°F). Temperature extremes ranged from a high of 36.9°C (98.4°F) in early September to a low of 3.3°C (37.9°F) in late November.

Autumn 2024 in Shanghai saw moderate rainfall totaling 446.4mm (17.6 inches) across the three months. September was the wettest month with 195.9mm of precipitation, while October and November received 126.8mm and 123.7mm respectively. Average humidity stayed relatively high at 77.7% throughout the season.

Shanghai enjoyed 528.1 hours of sunshine during autumn 2024, with September being the sunniest month at 221.3 hours. These conditions make autumn an excellent time for sightseeing along the Bund and exploring Shanghai's outdoor attractions, particularly during October when temperatures are comfortable and rainfall begins to decrease.

Shiji Zhimen

Shanghai

Wind

Weather Map

FAQ

When is the best weather in Shanghai?

How much total rainfall does Shanghai get per year?

What was the hottest day in Shanghai in 2024?

What is the weather like in Shanghai in December?

What is the weather like in Shanghai in autumn?