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 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
Weather in December
Temperature
December, noted for its average high-temperature of 27.5°C (81.5°F) and an average low-temperature of 19.5°C (67.1°F), is considered the coldest month.Heat index
Throughout December, the heat index is estimated at a hot 31°C (87.8°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Note that heat index values are valued for light wind and location in the shade. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
With an average relative humidity of 84%, December is the most humid month in Dehianga.Rainfall
In Dehianga, Sri Lanka, in December, it is raining for 22.9 days, with typically 118mm (4.65") of accumulated precipitation. In Dehianga, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.Daylight
With an average of 11h and 42min of daylight, December has the shortest days of the year.On the first day of December in Dehianga, sunrise is at 06:04 and sunset at 17:48. On the last day of the month, sunrise is at 06:19 and sunset at 18:02 +0530.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year in Dehianga, Sri Lanka.UV index
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Dehianga, Sri Lanka. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Dehianga?
What is the usual temperature for Dehianga in December?
What is the most humid month in Dehianga?
What is the average humidity in December in Dehianga?
How many days does it rain in December in Dehianga?
What is the month with the shortest days in Dehianga?
What is the average length of the day in December in Dehianga?
When are sunrise and sunset in December in Dehianga?
What is the month with the least sunshine in Dehianga?
How many hours of sunshine does Dehianga have in December?
When is the highest UV index in Dehianga?
What is the UV index reading in December in Dehianga?
Average temperature in December
Dehianga, Sri Lanka
- Average high temperature in December: 27.5°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).
- Average low temperature in December: 19.5°C
The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).
Average pressure in December
Dehianga, Sri Lanka
- Average pressure in December: 1010.5mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in December
Dehianga, Sri Lanka
- Average wind speed in December: 6.7km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in December
Dehianga, Sri Lanka
- Average humidity in December: 84%
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall in December
Dehianga, Sri Lanka
- Average rainfall in December: 118mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in December
Dehianga, Sri Lanka
- Average rainfall days in December: 22.9 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).
Average daylight in December /
Average sunshine in December
Dehianga, Sri Lanka
- Average daylight in December: 11h and 4min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Dehianga, Sri Lanka
- Average sunshine days in December: 6.8 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).
Average UV index in December
Dehianga, Sri Lanka
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in December
Dehianga, Sri Lanka
- Average cloud cover in December: 47
The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility in December
Dehianga, Sri Lanka
- Average visibility in December: 8km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).
Dehianga, Sri Lanka
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