May weather forecast
Guangzhou, China

May in Guangzhou is characterized by excellent weather conditions meant for outdoor activities. The marked high temperature average maintains an upward trajectory, providing warmth amidst the city's vibrant urban life. Counterbalanced by the steadily high humidity, the temperature allows for comfortable exploring and sightseeing. The month is noticeably wetter with the highest recorded average rainfall at 284mm (11.18"). Longer daylight hours grace the city, accompanied by an increased amount of sunlight, a delightful treat for sun-lovers.

Temperature

With the beginning of May, Guangzhou's average high-temperature sees a minor increase, transitioning from a warm 25.7°C (78.3°F) in April to a still moderately hot 29.3°C (84.7°F). Guangzhou's average low-temperature in May is measured at an agreeable 22.7°C (72.9°F).

Heat index

For most parts of May, the heat index is computed to be a fiery hot 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The months with the highest humidity in Guangzhou, China, are April through June, with an average relative humidity of 84%.

Rainfall

May is the month with the most rainfall in Guangzhou. Rain falls for 18.3 days and accumulates 284mm (11.18") of precipitation.

Daylight

In May, the average length of the day in Guangzhou is 13h and 15min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:54. On the last day of May, sunrise is at 05:40 and sunset at 19:08 CST.

Sunshine

In May, the average sunshine in Guangzhou is 3.4h.

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 12 in May translates into the following recommendations:
Adopt every precaution of necessity, unprotected skin and eyes may suffer burns instantly. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Directly after outdoor activities or swimming, a broad-spectrum sunscreen with SPF 30+ should be applied generously and reapplied frequently.