December weather forecast
Kossinna, Sri Lanka

December

Weather in December

December, the first month of the winter in Kossinna, is still a warm month, with an average temperature varying between 19.5°C (67.1°F) and 27.5°C (81.5°F).

Temperature

In Kossinna, December is the month with the lowest recorded average temperatures, measuring a high of 27.5°C (81.5°F) and a low of 19.5°C (67.1°F).

Heat index

December's heat index is calculated to be a tropical 31°C (87.8°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. 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. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

December is the most humid month, with an average relative humidity of 84%.

Rainfall

In Kossinna, during December, the rain falls for 22.9 days and regularly aggregates up to 118mm (4.65") of precipitation. Throughout the year, in Kossinna, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:05 and sunset at 17:49. On the last day of December, sunrise is at 06:20 and sunset at 18:02 +0530.

Sunshine

The month with the least sunshine is December, with an average of 5.7h of sunshine.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during December translates into these guidelines:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What time of the year is the coldest?
Kossinna experiences its lowest temperatures in December, with an average peak of 27.5°C (81.5°F) and a low of 19.5°C (67.1°F).
What is the usual temperature for Kossinna in December?
In December, the average high-temperature and low-temperature are 27.5°C (81.5°F) and 19.5°C (67.1°F) respectively. In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 31°C (87.8°F).
What is the most humid month in Kossinna?
With an average relative humidity of 84%, December is the most humid month.
What is the average humidity in December?
In Kossinna, the average relative humidity in December is 84%.
How many days does it rain in December?
In Kossinna, in December, it is raining for 22.9 days, with typically 118mm (4.65") of accumulated precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 11h and 42min of daylight.
How many hours of daylight does Kossinna have in December?
The average day length in December in Kossinna is 11h and 43min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 06:05 and sunset at 17:49. On the last day of the month, sunrise is at 06:20 and sunset at 18:02 +0530.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5.7h of sunshine.
How many hours of sunshine does Kossinna have in December?
The average sunshine duration in December is 5.7h.
What is the month with the highest UV index?
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Kossinna.
How high is the UV index in December?
The average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Kossinna, Sri Lanka
Average temperature in December
Kossinna, 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 - Kossinna, Sri Lanka
Average pressure in December
Kossinna, 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 - Kossinna, Sri Lanka
Average wind speed in December
Kossinna, 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 - Kossinna, Sri Lanka
Average humidity in December
Kossinna, 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 - Kossinna, Sri Lanka
Average rainfall in December
Kossinna, 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 - Kossinna, Sri Lanka
Average rainfall days in December
Kossinna, 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 - Kossinna, Sri Lanka
Average daylight in December /
Average sunshine in December
Kossinna, 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 - Kossinna, Sri Lanka
Average sunshine days in December
Kossinna, 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 - Kossinna, Sri Lanka
Average UV index in December
Kossinna, 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 - Kossinna, Sri Lanka
Average cloud cover in December
Kossinna, 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 - Kossinna, Sri Lanka
Average visibility in December
Kossinna, 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).

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