May weather forecastBiak, Indonesia

Weather in May

A noticeable shift in Biak's weather becomes evident in May, as rainfall drops to 164mm (6.46"), signaling the start of a drier phase over the coming few months. A marked decrease in cloud cover is also observed, causing an incrementally increased amount of sunlight received. Though this reduction in rainfall is significant, the weather continues to remain characteristically tropical. While May marks a transition towards a less rainy period, it retains elements of the climate from the previous month, yet with a lower relative humidity. Milder environmental conditions, coupled with the steady sea temperature, offer an inviting scenario for watersports enthusiasts and holiday makers alike.

Temperature

Biak's average high-temperature marks a still moderately hot 29.8°C (85.6°F) with the advent of May, closely mirroring that of the preceding month. Throughout May, a modest shift from daytime highs is anticipated, with an average low-temperature of 26.3°C (79.3°F).

Heat index

The heat index in May is estimated at a very hot 37°C (98.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Biak, in May, it is raining for 28 days, with typically 164mm (6.46") of accumulated precipitation. Throughout the year, there are 323.4 rainfall days, and 2132mm (83.94") of precipitation is accumulated.

Sea temperature

The months with the coldest seawater in Biak are January through October and December, with an average sea temperature of 29°C (84.2°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

In Biak, the average length of the day in May is 12h and 4min.
On the first day of the month, sunrise is at 05:50 and sunset at 17:55. On the last day of May, sunrise is at 05:51 and sunset at 17:55 WIT.

Sunshine

In May, the average sunshine is 8.1h.

UV index

January, March through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in May interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be on guard! The reflective nature of sand and water boosts UV exposure.