January weather forecast
Batam, Indonesia

Kicking off the year, January in Batam, Indonesia sees a blend of warm temperatures and high humidity. It bears a similarity to December, retaining its temperate conditions. With 79% relative humidity, signs of heavy rainfall of 137mm (5.39") are prominent. The landscape of Batam often gleams with lush greenery brought on by frequent showers. As January transitions to February, a slight drop in humidity is expected, making February somewhat less oppressive.

Temperature

January, with its high-temperature average of 29.3°C (84.7°F) and a low-temperature average of 25.7°C (78.3°F), is the coldest month.

Heat index

For January, the heat index is computed to be a torrid 35°C (95°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

January and December, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Batam, in January, during 20.3 rainfall days, 137mm (5.39") of precipitation is typically accumulated. Throughout the year, there are 267.5 rainfall days, and 1342mm (52.83") of precipitation is accumulated.

Daylight

In January, the average length of the day in Batam is 12h and 4min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:09. On the last day of January, sunrise is at 06:14 and sunset at 18:19 WIB.

Sunshine

January and December, with an average of 7.5h of sunshine, are months with the least 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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 7 suggests this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.