Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Pekalongan's shift into December sets the average high-temperature at a warm 29.9°C (85.8°F), a figure that deviates only slightly from November's 30°C (86°F). Pekalongan reports a consistent average low-temperature of 23.4°C (74.1°F) throughout December nights.Heat index
December's average heat index is computed to be a sweltering 37°C (98.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.The heat index's values are generally associated with conditions in shade and light breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
In December, the average relative humidity is 80%.Rainfall
In Pekalongan, during December, the rain falls for 24.7 days and regularly aggregates up to 224mm (8.82") of precipitation. In Pekalongan, during the entire year, the rain falls for 265.2 days and collects up to 1898mm (74.72") of precipitation.Sea temperature
December is the month with the warmest seawater, with an average sea temperature of 30.2°C (86.4°F).Note: When water's temperature exceeds 30°C (86°F), it arguably loses its primary appeal of offering a cool escape.
Daylight
December has the longest days of the year, with an average of 12h and 30min of daylight.On the first day of December, sunrise is at 05:15 and sunset at 17:45. On the last day of the month, sunrise is at 05:28 and sunset at 17:59 WIB.
Sunshine
The month with the least sunshine is December, with an average of 7.4h of sunshine.UV index
The months with the highest UV index in Pekalongan are February through April, October and 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 ordinary person.Note: In December, the UV index of 7 transforms into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection of sand and water increases the UV dose.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is December in Pekalongan?
What is the average humidity in December in Pekalongan?
How many days does it rain in December in Pekalongan?
When is the sea warmest in Pekalongan?
What is the sea temperature in December in Pekalongan?
When are the longest days in Pekalongan?
How many hours of daylight does Pekalongan have in December?
When are sunrise and sunset in December in Pekalongan?
What is the month with the least sunshine in Pekalongan?
How many hours of sunshine does Pekalongan have in December?
What are the months with the highest UV index in Pekalongan?
What is the UV index intensity in December in Pekalongan?
Average temperature in December
Pekalongan, Indonesia
- Average high temperature in December: 29.9°C
The warmest month (with the highest average high temperature) is March (30.5°C).
The month with the lowest average high temperature is July (28.5°C).
- Average low temperature in December: 23.4°C
The month with the highest average low temperature is April (23.5°C).
The coldest month (with the lowest average low temperature) is August (20.9°C).
Average pressure in December
Pekalongan, Indonesia
- Average pressure in December: 1009.2mbar
The months with the highest atmospheric pressure are August and September (1011.7mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in December
Pekalongan, Indonesia
- Average wind speed in December: 5.5km/h
The windiest month (with the highest average wind speed) is August (8.8km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in December
Pekalongan, Indonesia
- Average humidity in December: 80%
The months with the highest relative humidity are June and July (83%).
The months with the lowest relative humidity are September and October (79%).
Average rainfall in December
Pekalongan, Indonesia
- Average rainfall in December: 224mm
The wettest month (with the highest rainfall) is January (273mm).
The driest month (with the least rainfall) is August (24mm).
Average rainfall days in December
Pekalongan, Indonesia
- Average rainfall days in December: 24.7 days
The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (13.8 days).
Average sea temperature in December
Pekalongan, Indonesia
- Average sea temperature in December: 30.2°C
The best month for swimming (with the highest average sea temperature) is December (30.2°C).
The coldest month (with the lowest average sea temperature) is August (28°C).
Average daylight in December /
Average sunshine in December
Pekalongan, 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: 7h and 2min
The month with the most sunshine is February (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in December
Pekalongan, Indonesia
- Average sunshine days in December: 4.5 days
The month with the most sunshine days is August (12.1 days).
The month with the least sunshine days is February (1.5 days).
Average UV index in December
Pekalongan, Indonesia
- Average UV index in December: 7
The months with the highest UV index are February, March, April, October and December (UV index 7).
The months with the lowest UV index are January, May, June, July, August, September and November (UV index 6).
Average cloud cover in December
Pekalongan, Indonesia
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Pekalongan, Indonesia
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
