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
December
Weather in December
Temperature
The commencement of December records an average high-temperature of a still warm 28.9°C (84°F), barely varying from November's 29.2°C (84.6°F). December nights register a minor temperature decline, steadying at a still moderately hot 24.8°C (76.6°F).Heat index
For most parts of December, the heat index is appraised at a tropical 34°C (93.2°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
In Kalupahana, the average relative humidity in December is 79%.Rainfall
In Kalupahana, in December, it is raining for 22.1 days, with typically 114mm (4.49") of accumulated precipitation. In Kalupahana, during the entire year, the rain falls for 286.9 days and collects up to 1974mm (77.72") of precipitation.Daylight
With an average of 11h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:05 and sunset at 17:51. On the last day of December, sunrise is at 06:19 and sunset at 18:05 +0530.
Sunshine
The month with the least sunshine is December, with an average of 7h of sunshine.UV index
The months with the highest UV index are January through April, June through August, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 7 during December translates into the following directions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in December?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Kalupahana have in December?
When is the sunrise / sunset in December in Kalupahana?
What is the month with the least sunshine?
How many hours of sunshine does Kalupahana have in December?
What are the months with the highest UV index?
What is the UV index reading in December?
Average temperature in December
Kalupahana, Sri Lanka
- Average high temperature in December: 28.9°C
The warmest months (with the highest average high temperature) are March and April (30.3°C).
The months with the lowest average high temperature are August and September (28.3°C).
- Average low temperature in December: 24.8°C
The month with the highest average low temperature is May (26.7°C).
The coldest month (with the lowest average low temperature) is January (24°C).
Average pressure in December
Kalupahana, Sri Lanka
- Average pressure in December: 1010.2mbar
The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is May (1008.9mbar).
Average wind speed in December
Kalupahana, Sri Lanka
- Average wind speed in December: 9.4km/h
The windiest month (with the highest average wind speed) is June (20.2km/h).
The calmest month (with the lowest average wind speed) is January (7.8km/h).
Average humidity in December
Kalupahana, Sri Lanka
- Average humidity in December: 79%
The months with the highest relative humidity are June and September (82%).
The months with the lowest relative humidity are February and March (77%).
Average rainfall in December
Kalupahana, Sri Lanka
- Average rainfall in December: 114mm
The wettest month (with the highest rainfall) is May (302mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in December
Kalupahana, Sri Lanka
- Average rainfall days in December: 22.1 days
The month with the highest number of rainy days is June (28 days).
The month with the least rainy days is January (14.8 days).
Average daylight in December /
Average sunshine in December
Kalupahana, Sri Lanka
- Average daylight in December: 11h and 5min
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 48min).
- Average sunshine in December: 7h and 0min
The month with the most sunshine is April (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Kalupahana, Sri Lanka
- Average sunshine days in December: 6.4 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is June (1 days).
Average UV index in December
Kalupahana, Sri Lanka
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, June, July, August, October, November and December (UV index 7).
The months with the lowest UV index are May and September (UV index 6).
Average cloud cover in December
Kalupahana, Sri Lanka
- Average cloud cover in December: 38
The month with the most cloud cover is June (Cloud cover 51).
The month with the least cloud cover is February (Cloud cover 26).
Average visibility in December
Kalupahana, Sri Lanka
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June and December (10km).
The months with the lowest visibility are May, July, August, September, October and November (9km).
