December weather forecast
Ketegan, Indonesia

December

Weather in December

The first month of the summer, December, is still a tropical month in Ketegan, Indonesia, with an average temperature ranging between max 31.1°C (88°F) and min 26.3°C (79.3°F).

Temperature

The arrival of December denotes a barely perceptible change in the average high-temperatures to a still tropical 31.1°C (88°F) from November's 32.4°C (90.3°F). Ketegan's nocturnal December readings average at a moderately hot 26.3°C (79.3°F), showing little variation from the daytime temperatures.

Heat index

Throughout December, the heat index is estimated at a torrid 39°C (102.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Ketegan, Indonesia, the average relative humidity in December is 74%.

Rainfall

In Ketegan, during December, the rain falls for 24.7 days and regularly aggregates up to 103mm (4.06") of precipitation. Throughout the year, there are 188.4 rainfall days, and 840mm (33.07") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:02 and sunset at 17:33. On the last day of December, sunrise is at 05:15 and sunset at 17:48 WIB.

Sunshine

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. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 in December translates into these instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

How hot does it get in Ketegan in December?
The average high-temperature, in December, in Ketegan, is 31.1°C (88°F), while the average low-temperature is 26.3°C (79.3°F). In December, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 39°C (102.2°F).
What is the average humidity in December in Ketegan?
In Ketegan, Indonesia, the average relative humidity in December is 74%.
How many days does it rain in December in Ketegan?
In Ketegan, Indonesia, during December, the rain falls for 24.7 days and regularly aggregates up to 103mm (4.06") of precipitation.
When are the longest days in Ketegan?
December has the longest days of the year in Ketegan, with an average of 12h and 30min of daylight.
How many hours of daylight does Ketegan have in December?
In Ketegan, the average day length in December is 12h and 32min.
When are sunrise and sunset in December in Ketegan?
On the first day of December, sunrise is at 05:02 and sunset at 17:33. On the last day of the month, sunrise is at 05:15 and sunset at 17:48 WIB.
How many hours of sunshine does Ketegan have in December?
The average sunshine duration in December in Ketegan, Indonesia, is 8.6h.
When is the highest UV index in Ketegan?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What are the months with the lowest UV index in Ketegan?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
What is the UV index reading in December in Ketegan?
In Ketegan, the average daily maximum UV index in December is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Ketegan, Indonesia
  • Average high temperature in December: 31.1°C

The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).

  • Average low temperature in December: 26.3°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).

Average pressure in December
Ketegan, Indonesia
  • Average pressure in December: 1008.7mbar

The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

Average wind speed in December
Ketegan, Indonesia
  • Average wind speed in December: 7km/h

The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).

Average humidity in December
Ketegan, Indonesia
  • Average humidity in December: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).

Average rainfall in December
Ketegan, Indonesia
  • Average rainfall in December: 103mm

The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in December
Ketegan, Indonesia
  • Average rainfall days in December: 24.7 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).

Average daylight in December /
Average sunshine in December
Ketegan, Indonesia
  • Average daylight in December: 12h and 3min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in December: 8h and 4min

The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).

Average sunshine days in December
Ketegan, Indonesia
  • Average sunshine days in December: 5.9 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).

Average UV index in December
Ketegan, Indonesia
  • Average UV index in December: 7

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

Average cloud cover in December
Ketegan, Indonesia
  • Average cloud cover in December: 38

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in December
Ketegan, Indonesia
  • Average visibility in December: 10km

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

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