December weather forecastManyar, Indonesia

Weather in December

December, the first month of the summer in Manyar, is still a hot month, with an average temperature ranging between max 31.2°C (88.2°F) and min 26.3°C (79.3°F).

Temperature

The introduction of December sees an average high-temperature of a still hot 31.2°C (88.2°F), hardly deviating from November. December nights in Manyar anticipate an average temperature of 26.3°C (79.3°F), a modest decline from the daytime.

Heat index

The heat index value during December is appraised at a sweltering 39°C (102.2°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in December in Manyar is 74%.

Rainfall

In Manyar, during December, the rain falls for 24.7 days and regularly aggregates up to 102mm (4.02") of precipitation. In Manyar, Indonesia, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") of precipitation.

Daylight

December has the longest days of the year in Manyar, with an average of 12h and 30min of daylight.
On the first day of December in Manyar, sunrise is at 05:03 and sunset at 17:33. On the last day of the month, sunrise is at 05:16 and sunset at 17:48 WIB.

Sunshine

In Manyar, the average sunshine in December is 8.6h.

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 in Manyar, Indonesia. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 7 in December leads to these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.