April weather forecast
Sepang, Malaysia

April, like March, is another tropical spring month in Sepang, Malaysia, with an average temperature ranging between min 25.3°C (77.5°F) and max 31.3°C (88.3°F).

Temperature

Sepang commences April with an average high-temperature of a still hot 31.3°C (88.3°F), maintaining the same temperature as the previous month. Sepang's nighttime temperature in April drops to an average of 25.3°C (77.5°F).

Heat index

Throughout April, the heat index is estimated at an extremely hot 41°C (105.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. 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. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in April in Sepang, Malaysia, is 78%.

Rainfall

In Sepang, in April, it is raining for 27.2 days, with typically 119mm (4.69") of accumulated precipitation. Throughout the year, in Sepang, there are 311.5 rainfall days, and 1296mm (51.02") of precipitation is accumulated.

Daylight

In Sepang, Malaysia, the average length of the day in April is 12h and 11min.
On the first day of April, sunrise is at 7:12 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 7:16 pm +08.

Sunshine

In April, the average sunshine is 8.8h.

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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during April leads to these instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.