April weather forecast
Jember, Indonesia

April is recognized as a transitional month in Jember's weather system. It marks the beginning of a significant drop in rainfall to 179mm (7.05"), indicating the onset of the dry season. In addition to reduced rainfall, there is a noticeable increase in sunshine duration, creating a brighter atmosphere. The hours of daylight begin to decrease at this time, a contrast to the progressing bright and sunny days. Despite the shift in conditions, wind speed and atmospheric pressure experience minor changes.

Temperature

The onset of April brings with it an average high-temperature of a tropical 30.3°C (86.5°F), showing a negligible variation from the month before. During April, the temperature tends to dip to an average of 23.1°C (73.6°F) at night.

Heat index

In April, the heat index is estimated at a blistering 40°C (104°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In April, the average relative humidity is 83%.

Rainfall

In April, in Jember, the rain falls for 26.7 days. Throughout April, 179mm (7.05") of precipitation is accumulated. Throughout the year, in Jember, there are 247.8 rainfall days, and 1536mm (60.47") of precipitation is accumulated.

Daylight

In April, the average length of the day in Jember, Indonesia, is 11h and 56min.
On the first day of the month, sunrise is at 05:28 and sunset at 17:29. On the last day of April, sunrise is at 05:27 and sunset at 17:17 WIB.

Sunshine

The average sunshine in April in Jember, Indonesia, is 8.6h.

UV index

February, April through 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 vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In April, the maximum UV index of 7 suggests this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.