July weather forecast
Shanghai, China

July brings the highest temperatures in Shanghai, with an average maximum temperature of soaring 32.2°C (90°F). Yet, the city faces 146mm (5.75") of rainfall over 11 days. The extended daylight hours combined with the highest UV index of the year, make it necessary to take precautions against sunburn. Despite the high temperatures, the locals embrace the heat and the city remains alive and active. The warm sea temperatures also make July an excellent time for swimming and other water-based activities.

Temperature

July is the month when Shanghai's temperatures reach their peak, with averages of 32.2°C (90°F) and lows of 25.8°C (78.4°F).

Heat index

July's mean heat index is calculated to be an extremely hot 44°C (111.2°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in July is 77%.

Rainfall

In Shanghai, in July, it is raining for 11.4 days, with typically 146mm (5.75") of accumulated precipitation. Throughout the year, there are 120.8 rainfall days, and 1166mm (45.91") of precipitation is accumulated.

Sea temperature

In July, the average sea temperature is 25°C (77°F).
Note: Swimming, diving, and other water activities in the temperature range of 25°C (77°F) to 29°C (84.2°F) are perceived as very enjoyable and comfortable for prolonged durations.

Daylight

The average length of the day in July is 13h and 57min.
On the first day of the month, sunrise is at 04:53 and sunset at 19:02. On the last day of July, sunrise is at 05:10 and sunset at 18:50 CST.

Sunshine

With an average of 6.2h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 11. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A typical high UV index of 11 in July suggests the following recommendations:
Employ every precaution of importance, unprotected skin and eyes could burn within moments. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.