May weather forecastShanghai, China

The mother River Huangpu dividing the city into two in Shanghai, China

May

Weather in May

In May, Shanghai plunges into the full bloom of spring embracing the warmer temperatures. Although rainfall increases to 85mm (3.35"), the city still benefits from increased sunshine hours. The relative humidity remains constant, emphasizing the importance of staying hydrated. With the favorable temperatures of the sea, the month is ideal for water activities such as boat tours along the Huangpu River. Shanghai's sparkling skyline is especially alluring on those clear May nights.

Temperature

May brings a temperature increase, with average high-temperatures moving from April's enjoyable 19.5°C (67.1°F) to a warm 24.8°C (76.6°F). Throughout May, Shanghai anticipates an average low-temperature of 17.3°C (63.1°F).

Humidity

The average relative humidity in May in Shanghai is 72%.

Rainfall

In Shanghai, in May, during 10.4 rainfall days, 85mm (3.35") of precipitation is typically accumulated. In Shanghai, during the entire year, the rain falls for 120.8 days and collects up to 1166mm (45.91") of precipitation.

Sea temperature

In May, the average sea temperature is 16°C (60.8°F).
Note: For the majority, swimming in 16°C (60.8°F) does not offer a pleasant experience. Below 21°C (69.8°F), the difficulty in controlling breathing escalates.

Daylight

In Shanghai, the average length of the day in May is 13h and 44min.
On the first day of the month, sunrise is at 05:09 and sunset at 18:33. On the last day of May, in Shanghai, sunrise is at 04:50 and sunset at 18:52 CST.

Sunshine

In May, the average sunshine is 5.5h.

UV index

The average daily maximum UV index in May is 10. A UV Index reading of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In May, a regular UV index of 10 translates into these guidelines:
Immediate damage can occur to skin and eyes if left unprotected. Always take necessary precautions. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Updated: Jun 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Shanghai, 24.8°C (76.6°F) is the average high-temperature and 17.3°C (63.1°F) is the average low-temperature during May.

In Shanghai, China, the average relative humidity in May is 72%.

In May, the rain falls for 10.4 days. Throughout May, 85mm (3.35") of precipitation is accumulated.

In Shanghai, China, the average seawater temperature in May is 16°C (60.8°F). For most, swimming in 16°C (60.8°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

In May, the average day length is 13h and 44min.

In May, on the first day of the month, sunrise is at 05:09 and sunset at 18:33. On the last day of the month, sunrise is at 04:50 and sunset at 18:52 CST.

In May, the average sunshine duration is 5.5h.

In Shanghai, the average daily maximum UV index in May is 10. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

19.5°C

24.8°C

27.8°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

11.2

10.4

12.7

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in May
Shanghai, China

Average high temperature in May: 24.8°C

The warmest month (with the highest average high temperature) is July (32.2°C).
The month with the lowest average high temperature is January (8.1°C).

Average low temperature in May: 17.3°C

The months with the highest average low temperature are July and August (25.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).

Average humidity in May
Shanghai, China

Average humidity in May: 72%

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is December (71%).

Average rainfall in May
Shanghai, China

Average rainfall in May: 84.5mm

The wettest month (with the highest rainfall) is August (213.7mm).
The driest month (with the least rainfall) is December (43.9mm).

Average rainfall days in May
Shanghai, China

Average rainfall days in May: 10.4 days

The month with the highest number of rainy days is June (12.7 days).
The month with the least rainy days is October (6.9 days).

Average sea temperature in May
Shanghai, China

Average sea temperature in May: 16°C

The best month for swimming (with the highest average sea temperature) is August (27°C).
The coldest months (with the lowest average sea temperature) are February and March (8°C).

Average daylight in May /
Average sunshine in May
Shanghai, China

Average daylight in May: 13h and 42min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

Average sunshine in May: 5h and 30min

The month with the most sunshine is July (Average sunshine: 6h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).