April weather forecast
Petaling Jaya, Malaysia

Temperature contrasts noticeably during April in Petaling Jaya, touching a monthly high from 24.2°C (75.6°F) to 32.4°C (90.3°F). Combined with the highest recorded rainfall of 167mm (6.57") for the year, its climate can potentially keep tourists at bay. Even though pockets of sunlight peek through the misty mornings, it's not enough to warm up the wet, cool ground. This weather pattern is considered routine for April, which seems to prepare for the onset of monsoons. Looking ahead, May, too, will carry on with the rainy days while keeping the temperature a notch higher.

Temperature

The months of February, April through June see the peak of Petaling Jaya's temperatures, averaging a high of 32.4°C (90.3°F).

Heat index

In April, the heat index is calculated to be a blazing hot 45°C (113°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In April, the average relative humidity is 79%.

Rainfall

In Petaling Jaya, in April, during 27.8 rainfall days, 167mm (6.57") of precipitation is typically accumulated. In Petaling Jaya, during the entire year, the rain falls for 309.8 days and collects up to 1481mm (58.31") of precipitation.

Daylight

In April, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 7:12 am and sunset at 7:21 pm. On the last day of April, sunrise is at 7:03 am and sunset at 7:17 pm +08.

Sunshine

In April, the average sunshine is 8.4h.

UV index

The months with the highest UV index are February through October and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In April, the maximum UV index of 7 transforms into these recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.