April weather forecast
Sidoarjo, Indonesia

April, the same as March, in Sidoarjo, Indonesia, is another tropical autumn month, with temperature in the range of an average high of 30.5°C (86.9°F) and an average low of 25.6°C (78.1°F).

Temperature

Sidoarjo marks the start of April with an average high temperature of a still hot 30.5°C (86.9°F), mirroring the readings from March. Sidoarjo, in April, logs an average low-temperature of 25.6°C (78.1°F), a subtle step down from daytime readings.

Heat index

The heat index for April is calculated to be a fiery hot 38°C (100.4°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index readings emphasize conditions of light breezes and shaded spots. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. 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 76%.

Rainfall

In Sidoarjo, in April, it is raining for 21.3 days, with typically 87mm (3.43") of accumulated precipitation. Throughout the year, there are 188.4 rainfall days, and 840mm (33.07") of precipitation is accumulated.

Daylight

The average length of the day in April is 11h and 56min.
On the first day of April, sunrise is at 05:32 and sunset at 17:33. On the last day of the month, sunrise is at 05:30 and sunset at 17:21 WIB.

Sunshine

In April, the average sunshine is 9.1h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: During April, 7 as the daily maximum UV index converts into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.