April weather forecast
Alor Setar, Malaysia

The weather in Alor Setar takes a turn in April, showcasing the highest rainfall of the year. Visitors and locals experience a drastic increase in rainfall to 118mm (4.65"), significantly more than the amount recorded in March, and rainfall days also go up to 25.8. Cloud cover becomes frequent, leading to mistier conditions and reduced visibility. The heat, however, shows no sign of backing down, as the maximum temperatures barely fall from the peak. Consequently, this month tends to be hot and extremely wet, which is a crucial characteristic of a typical tropical monsoon climate.

Temperature

The arrival of April coincides with an average high-temperature of a still tropical 32.5°C (90.5°F), indicating a minimal shift from March's 33.3°C (91.9°F). In the month of April, the average low-temperature in Alor Setar usually rests at a moderately hot 24.7°C (76.5°F).

Heat index

April's average heat index is computed to be a blazing hot 46°C (114.8°F). On guard: Heat exhaustion and heat cramps are predicted. Heatstroke is a potential hazard with continuous physical effort.
Records show heat index calculations are tailored for shaded regions and mild winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Alor Setar, the average relative humidity in April is 79%.

Rainfall

In Alor Setar, Malaysia, in April, during 25.8 rainfall days, 118mm (4.65") of precipitation is typically accumulated. Throughout the year, in Alor Setar, there are 245.2 rainfall days, and 973mm (38.31") of precipitation is accumulated.

Sea temperature

In Alor Setar, in April, the average water temperature is 30.3°C (86.5°F).
Note: Many find water temperatures above 30°C (86°F) uncomfortable, particularly when seeking relief from the sun and heat.

Daylight

In April, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 7:16 am and sunset at 7:27 pm. On the last day of April, in Alor Setar, sunrise is at 7:05 am and sunset at 7:25 pm +08.

Sunshine

The average sunshine in April is 8.9h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Alor Setar are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 during April translates into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Attention! The reflection of both water and sand can increase the intensity of UV rays.