December weather forecast
Merauke, Indonesia

December concludes the year in Merauke, Indonesia, round-off the weather patterns experienced over the past 12 months. There is a significant rise in rainfall from November’s average, taking it up to 110mm (4.33"). Looking ahead, the forecast predicts that January will continue the trend of high precipitation and similar temperatures. As the year concludes, despite the prevalence of daily rainfall, Merauke still resonates with warm tropical vibes. Constant sea temperatures, abundant daylight, and cooling breezes combine to keep the city's weather appealing throughout the festive period.

Temperature

December, having an average high-temperature of 32.4°C (90.3°F) and an average low-temperature of 26°C (78.8°F), is the warmest month in Merauke.

Heat index

In December, the average heat index is appraised at an extremely hot 44°C (111.2°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
One should consider that heat index numbers are for shaded settings and light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Merauke, during December, the rain falls for 23.5 days and regularly aggregates up to 110mm (4.33") of precipitation. In Merauke, during the entire year, the rain falls for 213.7 days and collects up to 1054mm (41.5") of precipitation.

Sea temperature

January through April and December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are warm and delightful, ensuring comfort during water activities over extended periods.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year.
On the first day of December in Merauke, sunrise is at 05:09 and sunset at 17:44. On the last day of the month, sunrise is at 05:23 and sunset at 17:59 WIT.

Sunshine

The average sunshine in December in Merauke is 8.3h.

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. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 7 translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.