December weather forecastMancasan, Indonesia

December

Weather in December

The first month of the summer, December, is still a warm month in Mancasan, Indonesia, with an average temperature varying between 28.7°C (83.7°F) and 23.2°C (73.8°F).

Temperature

Mancasan measures an average high-temperature of a still moderately hot 28.7°C (83.7°F) in December, nearly consistent with the preceding month. Throughout the month of December, Mancasan sees a steady low-temperature average of 23.2°C (73.8°F).

Heat index

The heat index value for December is appraised at a hot 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The average relative humidity in December is 82%.

Rainfall

In Mancasan, in December, it is raining for 29.4 days, with typically 189mm (7.44") of accumulated precipitation. Throughout the year, there are 294.6 rainfall days, and 1749mm (68.86") of precipitation is accumulated.

Daylight

December has the longest days of the year in Mancasan, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:09 and sunset at 17:42. On the last day of December, in Mancasan, sunrise is at 05:23 and sunset at 17:56 WIB.

Sunshine

December has the least sunshine of the year in Mancasan, with an average of 7.4h of sunshine.

UV index

January, April through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Mancasan. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 6 in December transforms into this advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in December, in Mancasan, is 28.7°C (83.7°F) and the average low-temperature is 23.2°C (73.8°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in December is appraised at 34°C (93.2°F).

In Mancasan, the average relative humidity in December is 82%.

In December, in Mancasan, Indonesia, the rain falls for 29.4 days. Throughout December, 189mm (7.44") of precipitation is accumulated.

With an average of 12h and 36min of daylight, December has the longest days of the year in Mancasan, Indonesia.

In December, the average day length in Mancasan, Indonesia, is 12h and 34min.

In December, on the first day of the month, sunrise is at 05:09 and sunset at 17:42. On the last day of the month, in Mancasan, Indonesia, sunrise is at 05:23 and sunset at 17:56 WIB.

The month with the least sunshine in Mancasan, Indonesia, is December, with an average of 7.4h of sunshine.

In Mancasan, the average sunshine duration in December is 7.4h.

January, April through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Mancasan, Indonesia.

The average daily maximum UV index in December in Mancasan, Indonesia, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

29°C

28.7°C

28.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.6km/h

9.7km/h

10.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

0.8

0.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Mancasan, Indonesia

Average high temperature in December: 28.7°C

The warmest month (with the highest average high temperature) is October (29.3°C).
The month with the lowest average high temperature is July (27.7°C).

Average low temperature in December: 23.2°C

The months with the highest average low temperature are January and November (23.3°C).
The coldest month (with the lowest average low temperature) is August (21°C).

Average pressure in December
Mancasan, Indonesia

Average pressure in December: 1009mbar

The months with the highest atmospheric pressure are August and September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in December
Mancasan, Indonesia

Average wind speed in December: 8.5km/h

The windiest month (with the highest average wind speed) is August (11.6km/h).
The calmest month (with the lowest average wind speed) is April (7km/h).

Average humidity in December
Mancasan, Indonesia

Average humidity in December: 82%

The months with the highest relative humidity are May and June (84%).
The months with the lowest relative humidity are September and October (80%).

Average rainfall in December
Mancasan, Indonesia

Average rainfall in December: 189mm

The wettest month (with the highest rainfall) is March (236mm).
The driest month (with the least rainfall) is August (29mm).

Average rainfall days in December
Mancasan, Indonesia

Average rainfall days in December: 29.4 days

The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is August (13.8 days).

Average daylight in December /
Average sunshine in December
Mancasan, Indonesia

Average daylight in December: 12h and 36min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

Average sunshine in December: 7h and 24min

The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in December
Mancasan, Indonesia

Average sunshine days in December: 0.8 days

The month with the most sunshine days is August (11.1 days).
The months with the least sunshine days are January and February (0.4 days).

Average UV index in December
Mancasan, Indonesia

Average UV index in December: 6

The months with the highest UV index are February, March and October (UV index 7).
The months with the lowest UV index are January, April, May, June, July, August, September, November and December (UV index 6).

Average cloud cover in December
Mancasan, Indonesia

Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July and August (Cloud cover 38).

Average visibility in December
Mancasan, Indonesia

Average visibility in December: 9km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).