December weather forecastCilacap, Indonesia
December
Weather in December
Concluding the year in Cilacap, the weather in December shows no significant change from November. Rainfall slightly decreases from the shower experienced in November, transitioning the city into a slightly drier period. The average high temperature continues the pattern from the previous month, sealing the year with balmy conditions. All the other parameters, including relative humidity, daylight, UV index, visibility, and atmospheric pressure, diverge negligibly from the November figures making December an equally pleasant month. Notably, the wind speed experiences no alterations, ending the year on a soothing and predictable note.Temperature
Cilacap experiences a transition to a still moderately hot 28.9°C (84°F) in average high-temperatures with the arrival of December, not greatly differing from November's 28.5°C (83.3°F). During December, Cilacap perceives a slight decrease in temperature from daytime highs, settling at an average low of 25.3°C (77.5°F).Heat index
The heat index for December is evaluated at a hot 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
January, March and December, with an average relative humidity of 79%, are the least humid months.Rainfall
In Cilacap, in December, during 24.1 rainfall days, 139mm (5.47") of precipitation is typically accumulated. Throughout the year, there are 280.3 rainfall days, and 1371mm (53.98") of precipitation is accumulated.Daylight
With an average of 12h and 36min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 05:16 and sunset at 17:49. On the last day of the month, sunrise is at 05:30 and sunset at 18:03 WIB.
Sunshine
In December, the average sunshine is 7.8h.UV index
The months with the highest UV index are January through June, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 7 in December suggests the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cilacap, Indonesia
- Average high temperature in December: 28.9°C
The warmest month (with the highest average high temperature) is March (29.5°C).
The month with the lowest average high temperature is August (27°C).
- Average low temperature in December: 25.3°C
The months with the highest average low temperature are January and May (25.4°C).
The coldest month (with the lowest average low temperature) is August (23°C).
Average pressure in December
Cilacap, Indonesia
- Average pressure in December: 1009.2mbar
The month with the highest atmospheric pressure is September (1012mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in December
Cilacap, Indonesia
- Average wind speed in December: 10.2km/h
The windiest month (with the highest average wind speed) is August (17.1km/h).
The calmest month (with the lowest average wind speed) is March (8.9km/h).
Average humidity in December
Cilacap, Indonesia
- Average humidity in December: 79%
The months with the highest relative humidity are June and July (82%).
The months with the lowest relative humidity are January, March and December (79%).
Average rainfall in December
Cilacap, Indonesia
- Average rainfall in December: 139mm
The wettest month (with the highest rainfall) is March (152mm).
The driest month (with the least rainfall) is August (36mm).
Average rainfall days in December
Cilacap, Indonesia
- Average rainfall days in December: 24.1 days
The month with the highest number of rainy days is April (25.7 days).
The month with the least rainy days is September (19.1 days).
Average daylight in December /
Average sunshine in December
Cilacap, 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 48min
The month with the most sunshine is February (Average sunshine: 9h and 54min).
The months with the least sunshine are July and November (Average sunshine: 7h and 36min).
Average sunshine days in December
Cilacap, Indonesia
- Average sunshine days in December: 5.7 days
The month with the most sunshine days is December (5.7 days).
The month with the least sunshine days is May (2.3 days).
Average UV index in December
Cilacap, Indonesia
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, October, November and December (UV index 7).
The months with the lowest UV index are July, August and September (UV index 6).
Average cloud cover in December
Cilacap, Indonesia
- Average cloud cover in December: 49
The month with the most cloud cover is December (Cloud cover 49).
The months with the least cloud cover are April and May (Cloud cover 40).
Average visibility in December
Cilacap, Indonesia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
