January weather forecast
Merauke, Indonesia

Typically, the year begins in Merauke, Indonesia with moderately high temperatures and significant precipitation. January's weather closely resembles that of December, with only slight differences in temperature and humidity levels. January is the wettest month, seeing an average rainfall of 167mm across approximately 27 days. Comparatively, the following month, February, experiences slightly less rainfall. Notably, there is ample daylight in January, offering an average of 12.6 hours per day, which is a common characteristic of tropical regions.

Temperature

Merauke greets January with an average high-temperature of a still tropical 31.3°C, marking a slight deviation from the preceding month. Throughout the month of January, Merauke expects an average low of 25.7°C.

Heat index

The average heat index in January is calculated to be an extremely hot 42°C. Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In January, the average relative humidity is 79%.

Rainfall

In Merauke, in January, it is raining for 26.8 days, with typically 167mm of accumulated precipitation. Throughout the year, there are 213.7 rainfall days, and 1054mm of precipitation is accumulated.

Sea temperature

January through April and December, with an average sea temperature of 29°C, are months with the warmest seawater.
Note: Water temperature from 25°C to 29°C is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

The average length of the day in January in Merauke is 12h and 34min.
On the first day of the month, sunrise is at 05:23 and sunset at 17:59. On the last day of January, sunrise is at 05:37 and sunset at 18:06 WIT.

Sunshine

In January, the average sunshine is 8.9h.

UV index

The months with the highest UV index 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 Merauke. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the maximum UV index of 7 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.