October weather forecast
Biak, Indonesia

The weather in October exhibits slight changes in comparison to September. Rainfall increases slightly to 128mm (5.04"), but it continues to fall on the lesser side overall, making way for a pleasantly temperate climate. October follows the climatic scheme of September with a slight increase in rain observed. Despite the fluctuations in rainfall, the humidity, temperature range, and sea temperature stay consistent, indicating the region's tropical nature. The welcoming sea temperature stays the course, facilitating a range of water sports and leisure activities.

Temperature

Biak experiences a minor change to a still moderately hot 29.9°C (85.8°F) in average high-temperature during October, closely reflecting September. Biak documents an average low-temperature of 26.1°C (79°F) for the nights of October.

Heat index

For October, the heat index is estimated at a torrid 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Research indicates the heat index considers values in shaded locales and with light winds. 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 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

October is the least humid month, with an average relative humidity of 77%.

Rainfall

In Biak, in October, it is raining for 22.8 days, with typically 128mm (5.04") 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 are January through October and December, with an average sea temperature of 29°C (84.2°F).
Note: Water activities including swimming and diving are pleasurable in temperatures between 25°C (77°F) and 29°C (84.2°F), ensuring comfort and enjoyment for extended time frames.

Daylight

The average length of the day in October is 12h and 8min.
On the first day of October, sunrise is at 05:42 and sunset at 17:49. On the last day of the month, sunrise is at 05:35 and sunset at 17:44 WIT.

Sunshine

In Biak, the average sunshine in October is 8.4h.

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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In October, the maximum UV index of 7 suggests these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.