July weather forecast and climate
Shanghai, China

July in Shanghai, China, is a tropical summer month, with average temperature fluctuating between 25.8°C (78.4°F) and 32.2°C (90°F).

Temperature

July is the warmest month, with an average high-temperature of 32.2°C (90°F) and an average low-temperature of 25.8°C (78.4°F).

Heat index

The average heat index is calculated to be a scorching 43.8°C (110.8°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, metabolic differences, and pregnancy affect individual temperature impact. 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 important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July is 77%.

Rainfall

In Shanghai, during July, the rain falls for 11.4 days and regularly aggregates up to 145.7mm (5.74") of precipitation. In Shanghai, during the entire year, the rain falls for 120.8 days and collects up to 1166.1mm (45.91") of precipitation.

Sea temperature

In Shanghai, the average seawater temperature in July is 25°C (77°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In July, the average length of the day is 13.9h.

Sunshine

The month with the most sunshine is July, 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 excessive health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 11 in July transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.