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 stands out as Shanghai's warmest month, with temperatures ranging between an average high of 32.2°C (90°F) and a low of 25.8°C (78.4°F).

Heat index

The heat index in July is appraised at a blistering 44°C (111.2°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In July, the average relative humidity in Shanghai is 77%.

Rainfall

In Shanghai, in July, during 11.4 rainfall days, 146mm (5.75") 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 July, the average sea temperature in Shanghai is 25°C (77°F).
Note: Water activities including swimming and diving are pleasurable in temperatures between 25°C (77°F) and 29°C (84.2°F), ensuring comfort and enjoyment for extended time frames.

Daylight

In Shanghai, 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, in Shanghai, sunrise is at 05:10 and sunset at 18:50 CST.

Sunshine

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

UV index

June through August, with an average maximum UV index of 11, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 11 in July transforms into this advice:
Implement all necessary safeguards, unprotected skin might suffer burns rapidly. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Be wary! Reflections from sand and water make UV radiation more intense.