April weather forecastBolon, Indonesia
April weather forecast for Bolon, Indonesia: The average heat index, which takes the relative humidity and factors it into the air temperature reading, in April is computed to be 36°C (96.8°F). April, like March, in Bolon, Indonesia, is a moderately hot autumn month, with an average temperature varying between 24.2°C (75.6°F) and 29.3°C (84.7°F).
April
Weather in April
April, like March, in Bolon, Indonesia, is a moderately hot autumn month, with an average temperature varying between 24.2°C (75.6°F) and 29.3°C (84.7°F).Temperature
Bolon's climate in April displays an average high temperature of a still warm 29.3°C (84.7°F), consistent with the March's record. Bolon experiences a nighttime temperature average of 24.2°C (75.6°F) during April.Heat index
The heat index for April is computed to be a torrid 36°C (96.8°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Heat index evaluations are typically in the context of light winds and shaded environments. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
The average relative humidity in April is 81%.Rainfall
In Bolon, during April, the rain falls for 23.2 days and regularly aggregates up to 106mm (4.17") of precipitation. Throughout the year, there are 245 rainfall days, and 906mm (35.67") of precipitation is accumulated.Daylight
The average length of the day in April is 11h and 56min.On the first day of the month, sunrise is at 05:39 and sunset at 17:41. On the last day of April, sunrise is at 05:38 and sunset at 17:29 WIB.
Sunshine
The average sunshine in April is 8.6h.UV index
The months with the highest UV index in Bolon are February through May, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: In April, the maximum UV index of 7 transforms into these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Bolon, Indonesia
- Average high temperature in April: 29.3°C
The warmest month (with the highest average high temperature) is October (29.4°C).
The month with the lowest average high temperature is July (27.8°C).
- Average low temperature in April: 24.2°C
The months with the highest average low temperature are January and November (24.3°C).
The coldest month (with the lowest average low temperature) is August (21.9°C).
Average pressure in April
Bolon, Indonesia
- Average pressure in April: 1009.9mbar
The months with the highest atmospheric pressure are August and September (1011.9mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in April
Bolon, Indonesia
- Average wind speed in April: 8.5km/h
The windiest month (with the highest average wind speed) is August (14.5km/h).
The calmest month (with the lowest average wind speed) is March (8.4km/h).
Average humidity in April
Bolon, Indonesia
- Average humidity in April: 81%
The months with the highest relative humidity are May and June (82%).
The months with the lowest relative humidity are September and October (79%).
Average rainfall in April
Bolon, Indonesia
- Average rainfall in April: 106mm
The wettest month (with the highest rainfall) is January (126mm).
The driest month (with the least rainfall) is August (14mm).
Average rainfall days in April
Bolon, Indonesia
- Average rainfall days in April: 23.2 days
The months with the highest number of rainy days are January, March and November (24.7 days).
The month with the least rainy days is August (11.4 days).
Average daylight in April /
Average sunshine in April
Bolon, Indonesia
- Average daylight in April: 11h and 54min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in April: 8h and 36min
The month with the most sunshine is February (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in April
Bolon, Indonesia
- Average sunshine days in April: 4.8 days
The month with the most sunshine days is August (11.6 days).
The month with the least sunshine days is November (3.4 days).
Average UV index in April
Bolon, Indonesia
- Average UV index in April: 7
The months with the highest UV index are February, March, April, May, September, October, November and December (UV index 7).
The months with the lowest UV index are January, June, July and August (UV index 6).
Average cloud cover in April
Bolon, Indonesia
- Average cloud cover in April: 40
The months with the most cloud cover are January and December (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 35).
Average visibility in April
Bolon, Indonesia
- Average visibility in April: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





