December weather forecastBarus, Indonesia

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Barus, Indonesia, with an average temperature varying between 22.3°C (72.1°F) and 27.5°C (81.5°F).

Temperature

Barus marks the arrival of December with an average high-temperature of a still warm 27.5°C (81.5°F), hardly different from November's 27.3°C (81.1°F). An average temperature of 22.3°C (72.1°F) marks the nights in December.

Heat index

December's heat index is appraised at a tropical 31°C (87.8°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in December is 83%.

Rainfall

In Barus, in December, it is raining for 26.1 days, with typically 201mm (7.91") of accumulated precipitation. Throughout the year, there are 285.3 rainfall days, and 1792mm (70.55") of precipitation is accumulated.

Daylight

With an average of 12h and 0min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 06:15 and sunset at 18:15. On the last day of the month, sunrise is at 06:29 and sunset at 18:29 WIB.

Sunshine

In December, the average sunshine is 7.5h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 6. The months with the lowest UV index are January through December, with an average maximum UV index of 6. 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 typical high UV index of 6 in December suggests the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Updated: Aug 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in December, in Barus, is 27.5°C (81.5°F) and the average low-temperature is 22.3°C (72.1°F). In December, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 31°C (87.8°F).

In Barus, the average relative humidity in December is 83%.

In Barus, in December, during 26.1 rainfall days, 201mm (7.91") of precipitation is typically accumulated.

December has the shortest days of the year, with an average of 12h and 0min of daylight.

In Barus, the average day length in December is 12h and 1min.

In December, on the first day of the month, sunrise is at 06:15 and sunset at 18:15. On the last day of the month, sunrise is at 06:29 and sunset at 18:29 WIB.

In Barus, the average sunshine duration in December is 7.5h.

January through December, with an average maximum UV index of 6, are months with the highest UV index in Barus.

The months with the lowest UV index are January through December, with an average maximum UV index of 6.

The average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

27.3°C

27.5°C

27.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.7km/h

5.4km/h

5.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

1.8

4.6

4.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Barus, Indonesia

Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is May (28.9°C).
The month with the lowest average high temperature is November (27.3°C).

Average low temperature in December: 22.3°C

The month with the highest average low temperature is May (22.5°C).
The coldest months (with the lowest average low temperature) are July and September (21.5°C).

Average pressure in December
Barus, Indonesia

Average pressure in December: 1010.2mbar

The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is May (1009.9mbar).

Average wind speed in December
Barus, Indonesia

Average wind speed in December: 4.8km/h

The windiest month (with the highest average wind speed) is June (5.6km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

Average humidity in December
Barus, Indonesia

Average humidity in December: 83%

The month with the highest relative humidity is November (84%).
The months with the lowest relative humidity are June and July (78%).

Average rainfall in December
Barus, Indonesia

Average rainfall in December: 201mm

The wettest month (with the highest rainfall) is November (259mm).
The driest month (with the least rainfall) is June (82mm).

Average rainfall days in December
Barus, Indonesia

Average rainfall days in December: 26.1 days

The months with the highest number of rainy days are March and November (27.2 days).
The month with the least rainy days is June (17.2 days).

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

Average daylight in December: 12h and 0min

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).

Average sunshine in December: 7h and 30min

The month with the most sunshine is June (Average sunshine: 9h and 0min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).

Average sunshine days in December
Barus, Indonesia

Average sunshine days in December: 4.6 days

The month with the most sunshine days is June (11.4 days).
The month with the least sunshine days is November (1.8 days).

Average UV index in December
Barus, Indonesia

Average UV index in December: 6

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

Average cloud cover in December
Barus, Indonesia

Average cloud cover in December: 50

The month with the most cloud cover is November (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 33).

Average visibility in December
Barus, Indonesia

Average visibility in December: 9km

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