April weather forecast
Belawan, Indonesia

April, like March, is a hot spring month in Belawan, Indonesia, with an average temperature fluctuating between 31.8°C (89.2°F) and 25.6°C (78.1°F).

Temperature

The transition into April shows a subtle variation to a still hot 31.8°C (89.2°F) from March's 31.4°C (88.5°F) in the average high-temperature. During April nights, Belawan records an average temperature of 25.6°C (78.1°F).

Heat index

The average heat index in April is estimated at a blisteringly hot 42°C (107.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Know that the heat index computations account for shaded terrains and slight winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In April, the average relative humidity is 76%.

Rainfall

In Belawan, during April, the rain falls for 28 days and regularly aggregates up to 121mm (4.76") of precipitation. In Belawan, during the entire year, the rain falls for 317.8 days and collects up to 1437mm (56.57") of precipitation.

Sea temperature

In Belawan, in April, the average water temperature is 29.9°C (85.8°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in April is 12h and 12min.
On the first day of April, sunrise is at 06:24 and sunset at 18:33. On the last day of the month, sunrise is at 06:14 and sunset at 18:29 WIB.

Sunshine

The average sunshine in April is 8.8h.

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 are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! UV radiation becomes sharper due to reflections from sand and water.