December weather forecastMutur, Sri Lanka
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Mutur, Sri Lanka, with an average temperature varying between 21.4°C (70.5°F) and 29.3°C (84.7°F).Temperature
In Mutur, the coldest period comes during January and December, when the average high-temperature touches 29.3°C (84.7°F).Heat index
For December, the heat index is evaluated at a very hot 37°C (98.6°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. 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. 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 generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
December is the most humid month, with an average relative humidity of 84%.Rainfall
In Mutur, during December, the rain falls for 22.9 days and regularly aggregates up to 127mm (5") of precipitation. In Mutur, during the entire year, the rain falls for 196.8 days and collects up to 943mm (37.13") of precipitation.Daylight
The month with the shortest days in Mutur, Sri Lanka, is December, with an average of 11h and 36min of daylight.On the first day of December in Mutur, sunrise is at 06:04 and sunset at 17:44. On the last day of the month, sunrise is at 06:18 and sunset at 17:57 +0530.
Sunshine
December has the least sunshine of the year, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 6 during December translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mutur, Sri Lanka
- Average high temperature in December: 29.3°C
The warmest month (with the highest average high temperature) is April (34.9°C).
The months with the lowest average high temperature are January and December (29.3°C).
- Average low temperature in December: 21.4°C
The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).
Average pressure in December
Mutur, Sri Lanka
- Average pressure in December: 1010.6mbar
The month with the highest atmospheric pressure is January (1012mbar).
The month with the lowest atmospheric pressure is June (1007.5mbar).
Average wind speed in December
Mutur, Sri Lanka
- Average wind speed in December: 9.1km/h
The windiest month (with the highest average wind speed) is June (23.8km/h).
The calmest month (with the lowest average wind speed) is April (7.1km/h).
Average humidity in December
Mutur, Sri Lanka
- Average humidity in December: 84%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are June, July, August and September (67%).
Average rainfall in December
Mutur, Sri Lanka
- Average rainfall in December: 127mm
The wettest month (with the highest rainfall) is October (214mm).
The driest month (with the least rainfall) is June (15mm).
Average rainfall days in December
Mutur, Sri Lanka
- Average rainfall days in December: 22.9 days
The month with the highest number of rainy days is November (24.1 days).
The month with the least rainy days is June (7.8 days).
Average daylight in December /
Average sunshine in December
Mutur, Sri Lanka
- Average daylight in December: 11h and 36min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Mutur, Sri Lanka
- Average sunshine days in December: 5.9 days
The month with the most sunshine days is July (16 days).
The month with the least sunshine days is November (4.2 days).
Average UV index in December
Mutur, Sri Lanka
- Average UV index in December: 6
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, November and December (UV index 6).
Average cloud cover in December
Mutur, Sri Lanka
- Average cloud cover in December: 56
The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in December
Mutur, Sri Lanka
- Average visibility in December: 7km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January and December (7km).
