April weather forecast
Koja, Indonesia

April, like March, is a hot autumn month in Koja, Indonesia, with temperature in the range of an average low of 25.9°C (78.6°F) and an average high of 30.9°C (87.6°F).

Temperature

Koja records an average high-temperature of a still hot 30.9°C (87.6°F) in April, closely mirroring the climate of the previous month. Koja registers a steady nighttime temperature averaging a moderately hot 25.9°C (78.6°F) throughout April.

Heat index

April's average heat index is calculated to be a fiery hot 39°C (102.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Heat index details are generally centered around shaded locations and a mild breeze. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In April, the average relative humidity is 74%.

Rainfall

In Koja, in April, it is raining for 27.5 days, with typically 200mm (7.87") of accumulated precipitation. In Koja, during the entire year, the rain falls for 264.8 days and collects up to 1580mm (62.2") of precipitation.

Daylight

In April, the average length of the day is 11h and 58min.
On the first day of the month, sunrise is at 05:54 and sunset at 17:57. On the last day of April, in Koja, sunrise is at 05:52 and sunset at 17:46 WIB.

Sunshine

The average sunshine in April is 8.8h.

UV index

The months with the highest UV index in Koja are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Koja, Indonesia, 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.