July weather forecast
Biak, Indonesia

Despite a decrease in rainfall from June to 181mm (7.13"), July is consistent with the previous couple of months in its display of a less rainy, yet characteristically tropical climate. The relative humidity remains high, while average low and high temperatures show small fluctuations typical of a largely uniform tropical climate. Much like the previous months, July has abundant daylight hours and a consistent sea temperature. These factors lend an ideal atmosphere for outdoor activities and beach visits. As July transitions into August, the climate remains relatively steady, with minor variations in humidity and rainfall expected.

Temperature

July is the month when Biak sees the lowest average temperatures, with a high of 29.1°C (84.4°F) and a low of 25.6°C (78.1°F).

Heat index

In July, the heat index is calculated to be a torrid 35°C (95°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Biak, Indonesia, the average relative humidity in July is 79%.

Rainfall

In Biak, in July, during 28.3 rainfall days, 181mm (7.13") of precipitation is typically accumulated. Throughout the year, in Biak, 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: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

The average length of the day in July is 12h and 4min.
On the first day of July in Biak, sunrise is at 05:58 and sunset at 18:01. On the last day of the month, sunrise is at 06:00 and sunset at 18:04 WIT.

Sunshine

The average sunshine in July is 8.2h.

UV index

January, March through November, 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 risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, a regular UV index of 7 translates into these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! UV radiation becomes sharper due to reflections from sand and water.