January weather forecast
Belawan, Indonesia

January, like December, in Belawan, Indonesia, is another warm winter month, with an average temperature ranging between max 29.9°C (85.8°F) and min 24.1°C (75.4°F).

Temperature

January's onset sees an average high-temperature of a still warm 29.9°C (85.8°F), exhibiting a slight fluctuation from the previous month. Throughout January, the average low-temperature dips to a still warm 24.1°C (75.4°F).

Heat index

The heat index value during January is calculated to be a sweltering 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. 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 January, the average relative humidity in Belawan, Indonesia, is 79%.

Rainfall

In Belawan, in January, during 25 rainfall days, 100mm (3.94") of precipitation is typically accumulated. Throughout the year, there are 317.8 rainfall days, and 1437mm (56.57") of precipitation is accumulated.

Sea temperature

January is the month with the coldest seawater, with an average sea temperature of 28.8°C (83.8°F).
Note: For swimming, diving, and similar activities, the water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

In Belawan, the average length of the day in January is 11h and 56min.
On the first day of January in Belawan, sunrise is at 06:31 and sunset at 18:25. On the last day of the month, sunrise is at 06:39 and sunset at 18:37 WIB.

Sunshine

In January, the average sunshine is 8.6h.

UV index

The months with the highest UV index in Belawan are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Belawan. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during January translates into these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Stay aware! UV radiation is magnified when reflecting off sand and water.