December weather forecastSidosermo, Indonesia

December

Weather in December

December, the first month of the summer in Sidosermo, 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

As December takes its course, Sidosermo's average high-temperature registers at a still hot 31.2°C (88.2°F), closely aligning with the preceding month. The month of December is marked by an average minimum temperature of 26.3°C (79.3°F), slightly cooler than its daytime counterpart.

Heat index

For December, the heat index is calculated to be a fiery hot 39°C (102.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Understand that the heat index values take into account shaded locations and mild winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December is 74%.

Rainfall

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

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
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

In December, the average sunshine is 8.6h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. 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 risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

During December, Sidosermo experiences an average high-temperature of 31.2°C (88.2°F) and a low-temperature of 26.3°C (79.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in December is calculated to be 39°C (102.2°F).

The average relative humidity in December is 74%.

In Sidosermo, in December, during 24.7 rainfall days, 102mm (4.02") of precipitation is typically accumulated.

December has the longest days of the year, with an average of 12h and 30min of daylight.

The average day length in December is 12h and 32min.

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.

In Sidosermo, the average sunshine duration in December is 8.6h.

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.

In Sidosermo, the average daily maximum UV index in December is 7. A UV Index value of 6 to 7 symbolizes a high health risk 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sidosermo, Indonesia

  • Average high temperature in December: 31.2°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
Sidosermo, 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
Sidosermo, 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
Sidosermo, 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
Sidosermo, Indonesia

  • Average rainfall in December: 102mm

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
Sidosermo, 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
Sidosermo, Indonesia

  • Average daylight in December: 12h and 30min

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 36min

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
Sidosermo, 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
Sidosermo, 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
Sidosermo, 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
Sidosermo, 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).