December weather forecastJantho, Indonesia
December
Weather in December
December, the first month of the winter in Jantho, is still a warm month, with an average temperature fluctuating between 24.3°C (75.7°F) and 28.9°C (84°F).Temperature
In Jantho, the lowest average temperatures are observed in December, with a high of 28.9°C (84°F) and a low of 24.3°C (75.7°F).Heat index
The heat index value during December is calculated to be a very hot 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are primarily vital for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
With an average relative humidity of 81%, December is the most humid month.Rainfall
In Jantho, in December, during 24.5 rainfall days, 149mm (5.87") of precipitation is typically accumulated. Throughout the year, there are 225.1 rainfall days, and 1172mm (46.14") of precipitation is accumulated.Snowfall
In Jantho, snow does not fall in January through August, October through December.Daylight
December has the shortest days of the year, with an average of 11h and 48min of daylight.On the first day of the month, sunrise is at 06:31 and sunset at 18:21. On the last day of December, in Jantho, sunrise is at 06:45 and sunset at 18:35 WIB.
Sunshine
December has the least sunshine of the year, with an average of 7.5h of sunshine.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 7 during December, leads to the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jantho, Indonesia
- Average high temperature in December: 28.9°C
The warmest month (with the highest average high temperature) is June (31.3°C).
The month with the lowest average high temperature is December (28.9°C).
- Average low temperature in December: 24.3°C
The month with the highest average low temperature is May (25.4°C).
The coldest months (with the lowest average low temperature) are January and February (23.8°C).
Average pressure in December
Jantho, Indonesia
- Average pressure in December: 1009.9mbar
The months with the highest atmospheric pressure are January and September (1010.5mbar).
The month with the lowest atmospheric pressure is May (1009.4mbar).
Average wind speed in December
Jantho, Indonesia
- Average wind speed in December: 9.3km/h
The windiest month (with the highest average wind speed) is July (11.2km/h).
The calmest month (with the lowest average wind speed) is April (6.7km/h).
Average humidity in December
Jantho, Indonesia
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in December
Jantho, Indonesia
- Average rainfall in December: 149mm
The wettest months (with the highest rainfall) are May and November (160mm).
The driest month (with the least rainfall) is June (46mm).
Average rainfall days in December
Jantho, Indonesia
- Average rainfall days in December: 24.5 days
The month with the highest number of rainy days is November (24.9 days).
The month with the least rainy days is July (11.3 days).
Average snowfall days in December
Jantho, Indonesia
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Jantho, Indonesia
- Average daylight in December: 11h and 48min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- 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 December (Average sunshine: 7h and 30min).
Average sunshine days in December
Jantho, Indonesia
- Average sunshine days in December: 4.3 days
The month with the most sunshine days is July (17.9 days).
The month with the least sunshine days is November (3.2 days).
Average UV index in December
Jantho, 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
Jantho, Indonesia
- Average cloud cover in December: 45
The month with the most cloud cover is November (Cloud cover 47).
The months with the least cloud cover are February and June (Cloud cover 31).
Average visibility in December
Jantho, Indonesia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, May, June, July, August, September, October and December (10km).
The months with the lowest visibility are April and November (9km).
