May weather forecast
Heyuan, China

Heyuan experiences increased heat in May, symbolizing the transition from spring to summer. Temperatures rise notably compared to the barely warm April, and residents commence their summer routines. An interesting fact is that this month records the year's highest relative humidity of 85%. With the increase in heat, people frequent lakes and pools for respite. Despite the humidity, the weather does not take away from the city's aggressive charm.

Temperature

May in Heyuan witnesses a minor rise in the average high-temperature, transitioning from 25.9°C (78.6°F) in April to a still warm 29°C (84.2°F). Throughout May, the nighttime temperature averages to an agreeable 21°C (69.8°F).

Heat index

For most parts of May, the heat index is estimated at a sweltering 36°C (96.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Data suggests that the heat index is set for environments in shade and with a light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In May, the average relative humidity in Heyuan is 85%.

Rainfall

May is the month with the most rainfall. Rain falls for 24.9 days and accumulates 201mm (7.91") of precipitation.

Snowfall

In Heyuan, snow does not fall in February through December.

Daylight

In Heyuan, the average length of the day in May is 13h and 17min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:49. On the last day of May, in Heyuan, sunrise is at 05:33 and sunset at 19:03 CST.

Sunshine

The average sunshine in May in Heyuan is 7h.

UV index

The average daily maximum UV index in May in Heyuan is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In May, a regular UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.