April weather forecastBiak, Indonesia

Weather in April

With the advent of April, Biak experiences a reduced rainfall from March, dropping to 210mm (8.27"), though the city remains in its wet season pattern. Amid the frequent showers, the climate still offers ample sunshine and daylight hours, which is typical of its tropical location. In addition, the stable sea temperature ensures enjoyable beach activities for beachgoers. Weather patterns akin to March persist, with high humidity and warm temperatures dominating. As April concludes, a glimpse into the approaching month reveals a continued trend of gradually decreasing rainfall.

Temperature

April's onset records an average high-temperature of a still moderately hot 29.7°C (85.5°F), a near match to March's 29.3°C (84.7°F). Biak's nocturnal April readings average at a still moderately hot 26.1°C (79°F), showing little variation from the daytime temperatures.

Heat index

For April, the heat index is estimated at a torrid 36°C (96.8°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in April is 79%.

Rainfall

In Biak, during April, the rain falls for 28.5 days and regularly aggregates up to 210mm (8.27") of precipitation. Throughout the year, there are 323.4 rainfall days, and 2132mm (83.94") of precipitation is accumulated.

Sea temperature

January through October and December, with an average sea temperature of 29°C (84.2°F), are months with the coldest seawater.
Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In Biak, the average length of the day in April is 12h and 5min.
On the first day of April in Biak, sunrise is at 05:56 and sunset at 18:02. On the last day of the month, sunrise is at 05:50 and sunset at 17:55 WIT.

Sunshine

The average sunshine in April is 8h.

UV index

The months with the highest UV index are January, March through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 in April interprets into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be mindful! Sand and water reflections can up the Sun's UV exposure.