December weather forecast
Cisi'ih, Indonesia

The first month of the summer, December, is also a hot month in Cisi'ih, Indonesia, with an average temperature fluctuating between 30.4°C (86.7°F) and 24.6°C (76.3°F).

Temperature

As Cisi'ih transitions into December, the average high-temperature stands at a still hot 30.4°C (86.7°F), offering little variation from the preceding month. Throughout December, Cisi'ih experiences a low-temperature average of 24.6°C (76.3°F).

Heat index

Throughout December, the heat index is appraised at a torrid 38°C (100.4°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. 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 essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Cisi'ih, in December, it is raining for 27.5 days, with typically 156mm (6.14") of accumulated precipitation. Throughout the year, there are 291.3 rainfall days, and 1460mm (57.48") of precipitation is accumulated.

Sea temperature

In Cisi'ih, the average seawater temperature in December is 29.2°C (84.6°F).
Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:29 and sunset at 17:59. On the last day of the month, sunrise is at 05:42 and sunset at 18:13 WIB.

Sunshine

The average sunshine in December is 9.1h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.