December weather forecast
Muntilan, Indonesia

December, the first month of the summer in Muntilan, is also a moderately hot month, with an average temperature varying between 24.5°C (76.1°F) and 29.5°C (85.1°F).

Temperature

The average high-temperature for December is a warm 29.5°C (85.1°F), closely aligning with the temperature of the preceding month. December in Muntilan sees a slight dip to an average low temperature of 24.5°C (76.1°F) from the daytime highs.

Heat index

The heat index for December is evaluated at a sweltering 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in December is 77%.

Rainfall

In Muntilan, during December, the rain falls for 26.6 days and regularly aggregates up to 169mm (6.65") of precipitation. In Muntilan, during the entire year, the rain falls for 256.4 days and collects up to 1381mm (54.37") of precipitation.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year in Muntilan.
On the first day of the month, sunrise is at 05:12 and sunset at 17:43. On the last day of December, sunrise is at 05:25 and sunset at 17:58 WIB.

Sunshine

With an average of 7.8h of sunshine, December has the least sunshine of the year.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.