May weather forecast
Petaling Jaya, Malaysia

May experiences a slight rise in temperatures in Petaling Jaya, making the afternoon quite warm. This is still accompanied by rain showers, keeping the urban heat at bay. Though the month gets fair sunlight, the overcast sky can often reduce visibility. Its natives, accustomed to this weather pattern, continue with their day-to-day routine undeterred by frequent showers. The onset of June brings with it a slight dip in temperature and reduced rainfall.

Temperature

Petaling Jaya experiences the peak of its temperatures in February, April through June, when the average high-temperatures rise to 32.4°C (90.3°F).

Heat index

In May, the average heat index is estimated at a burning hot 45°C (113°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In May, the average relative humidity in Petaling Jaya is 78%.

Rainfall

In Petaling Jaya, Malaysia, during May, the rain falls for 29.2 days and regularly aggregates up to 144mm (5.67") of precipitation. Throughout the year, there are 309.8 rainfall days, and 1481mm (58.31") of precipitation is accumulated.

Daylight

The average length of the day in May in Petaling Jaya, Malaysia, is 12h and 16min.
On the first day of May, sunrise is at 7:03 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:20 pm +08.

Sunshine

The average sunshine in May in Petaling Jaya is 8.5h.

UV index

February through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in May transforms into this advice:
Guard against overexposure. Protection from sun-induced harm is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.