August weather forecast
Shanghai, China

August maintains the hot temperature from July but brings with it the highest recorded rainfall of 214mm (8.43"). The city experiences the longest hours of daylight, making it perfect for sightseeing. Despite the rain, Shanghai in August is a vibrant place, filled with color and life. The high sea temperature makes it a good time for beach outings and water activities while the city itself offers a multitude of indoor activities for rainy days.

Temperature

With the onset of August in Shanghai, the average high-temperature registers at a still tropical 31.5°C (88.7°F), subtly different from July's 32.2°C (90°F). Throughout the month of August, Shanghai observes an average nighttime temperature of 25.8°C (78.4°F).

Heat index

In August, the heat index is appraised at a scorching 42°C (107.6°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in August is 78%.

Rainfall

The month with the most rainfall in Shanghai is August, when the rain falls for 12.3 days and typically aggregates up to 214mm (8.43") of precipitation.

Sea temperature

The month with the warmest seawater in Shanghai, China, is August, with an average sea temperature of 27°C (80.6°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

In August, the average length of the day is 13h and 16min.
On the first day of the month, sunrise is at 05:11 and sunset at 18:49. On the last day of August, sunrise is at 05:29 and sunset at 18:19 CST.

Sunshine

In August, the average sunshine is 6h.

UV index

June through August, with an average maximum UV index of 11, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for the average person.
Note: In August, a daily UV index of 11 turns into the following recommendations:
Implement every essential safety step. Individuals with fair skin might receive burns in less than 5 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.