January weather forecast
Jerudong, Brunei

January invites a new year with a relatively high range of humidity, registering at 81%. The occurrence of rainfall dominates most days of the month, making outdoor activities a bit challenging. Expect overcast skies as the maximum cloud percentage hovers around 42%. Despite these conditions, the coastal breeze keeps the weather tolerable. The afternoons shed some light with an average daylight of around 11.9 hours.

Temperature

Jerudong's temperatures tend to hit their minimum during January and February, with an average high-temperature of 29.2°C (84.6°F).

Heat index

January's average heat index is appraised at a fiery hot 36°C (96.8°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

January through March, with an average relative humidity of 81%, are the most humid months.

Rainfall

In Jerudong, in January, during 26.8 rainfall days, 144mm (5.67") of precipitation is typically accumulated. In Jerudong, during the entire year, the rain falls for 310.9 days and collects up to 1693mm (66.65") of precipitation.

Daylight

In Jerudong, the average length of the day in January is 11h and 52min.
On the first day of the month, sunrise is at 06:28 and sunset at 18:19. On the last day of January, sunrise is at 06:36 and sunset at 18:31 +08.

Sunshine

January has the least sunshine of the year, with an average of 8.2h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 7 in January transforms into this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.