April weather forecast
Belawan, Indonesia

April, the same as March, in Belawan, Indonesia, is another tropical spring month, with an average temperature varying between 25.6°C (78.1°F) and 31.8°C (89.2°F).

Temperature

At the onset of April, Belawan records an average high-temperature of a still tropical 31.8°C (89.2°F), showing little deviation from the preceding month. In April, the nighttime temperature in Belawan lowers to an average of 25.6°C (78.1°F).

Heat index

The heat index value for April is calculated to be a scorching 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

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. Throughout the year, there are 317.8 rainfall days, and 1437mm (56.57") of precipitation is accumulated.

Sea temperature

In April, the average sea temperature in Belawan is 29.9°C (85.8°F).
Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort.

Daylight

In Belawan, the average length of the day in April is 12h and 12min.
On the first day of the month, sunrise is at 06:24 and sunset at 18:33. On the last day of April, in Belawan, 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 in Belawan, Indonesia, 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 estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In April, the maximum UV index of 7 suggests these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The Sun's UV rays intensify with reflections from sand and water.