August weather forecast
Xi'an, China

August in Xi'an ushers in cooler temperatures that bring relief from July's extreme heat. The frequency and amount of rainfall decrease slightly, though the city's weather remains quite humid. Prolonged daylight continues to prevail, shadowed by slightly fewer sunshine hours than in July's time. August offers warm, yet comfortable weather—ideal for outdoor events. Eventually, the change from the scorcher summer towards autumn begins to register as September approaches.

Temperature

The transition into August reveals an average high-temperature of a still tropical 30.8°C (87.4°F), mirroring a close resemblance to July. Xi'an, in August, experiences an average temperature of 20.9°C (69.6°F) at night.

Heat index

The heat index for August is estimated at a very hot 39°C (102.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in August is 75%.

Rainfall

In August, in Xi'an, the rain falls for 9.1 days. Throughout August, 71mm (2.8") of precipitation is accumulated. In Xi'an, during the entire year, the rain falls for 90.3 days and collects up to 553mm (21.77") of precipitation.

Daylight

In August, the average length of the day is 13h and 25min.
On the first day of the month, sunrise is at 05:55 and sunset at 19:45. On the last day of August, sunrise is at 06:16 and sunset at 19:12 CST.

Sunshine

With an average of 6.3h of sunshine, August has the most sunshine of the year.

UV index

In Xi'an, the average daily maximum UV index in August is 10. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for the average person.
Note: In August, the UV index of 10 transforms into the following advice:
It is crucial to take precautions; skin and eyes can get damaged if left unprotected. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Even if it's cloudy, generously apply and frequently reapply a sunscreen with no less than a 30 sun protection factor after each swim or outdoor exercise.