December weather forecast
Anuradhapura, Sri Lanka

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Weather in December

December brings slight relief from the heat in Anuradhapura with the city wrapped in a slightly cooler climate. Despite being cooler than November, temperatures remain typically warm in keeping with the tropical climate. Rainfall subsides further to 107mm (4.21"), signaling the end of the monsoon season. The capital city sees a reduction in overall weather activity in December, concluding the weather for the year. With December winding up, the transition into a new year takes the city back to its warm and humid January.

Temperature

The coldest period in Anuradhapura tends to be December, when average temperatures fluctuate between a high of 29.5°C (85.1°F) and a low of 21.7°C (71.1°F).

Heat index

The average heat index in December is evaluated at a sweltering 37°C (98.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

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

Rainfall

In December, in Anuradhapura, the rain falls for 22.4 days. Throughout December, 107mm (4.21") of precipitation is accumulated. In Anuradhapura, during the entire year, the rain falls for 199.1 days and collects up to 893mm (35.16") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 36min of daylight.
On the first day of December, sunrise is at 06:07 and sunset at 17:47. On the last day of the month, sunrise is at 06:22 and sunset at 18:00 +0530.

Sunshine

With an average of 5.1h of sunshine, December has the least sunshine of the year in Anuradhapura.

UV index

The months with the lowest UV index are January, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Frequently asked questions

What are the coldest months in Anuradhapura?

Anuradhapura's coldest month, December, generally records average temperatures ranging from a high of 29.5°C (85.1°F) to a low of 21.7°C (71.1°F).

How hot is it in Anuradhapura in December?

The high-temperature in Anuradhapura during December is 29.5°C (85.1°F) and the low-temperature is 21.7°C (71.1°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in December is evaluated at 37°C (98.6°F).

What is the most humid month in Anuradhapura?

The most humid month in Anuradhapura is December, with an average relative humidity of 84%.

What is the average humidity in December in Anuradhapura?

In December, the average relative humidity in Anuradhapura, Sri Lanka, is 84%.

How many days does it rain in December in Anuradhapura?

In Anuradhapura, in December, during 22.4 rainfall days, 107mm (4.21") of precipitation is typically accumulated.

What is the month with the shortest days in Anuradhapura?

With an average of 11h and 36min of daylight, December has the shortest days of the year.

How many hours of daylight does Anuradhapura have in December?

The average day length in December in Anuradhapura is 11h and 39min.

What time are sunrise and sunset in December in Anuradhapura?

On the first day of December in Anuradhapura, Sri Lanka, sunrise is at 06:07 and sunset at 17:47. On the last day of the month, sunrise is at 06:22 and sunset at 18:00 +0530.

What is the month with the least sunshine in Anuradhapura?

With an average of 5.1h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Anuradhapura have in December?

The average sunshine duration in December is 5.1h.

What is the month with the lowest UV index in Anuradhapura?

January, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Anuradhapura, Sri Lanka.

What is the UV index reading in December in Anuradhapura?

The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
Anuradhapura, Sri Lanka

Average temperature in December - Anuradhapura, Sri Lanka
  • Average high temperature in December: 29.5°C

The warmest months (with the highest average high temperature) are March and April (34.3°C).
The month with the lowest average high temperature is December (29.5°C).

  • Average low temperature in December: 21.7°C

The month with the highest average low temperature is June (25.4°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).

Average pressure in December
Anuradhapura, Sri Lanka

Average pressure in December - Anuradhapura, 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 (1007.2mbar).

Average wind speed in December
Anuradhapura, Sri Lanka

Average wind speed in December - Anuradhapura, Sri Lanka
  • Average wind speed in December: 12.9km/h

The windiest month (with the highest average wind speed) is June (27.4km/h).
The calmest month (with the lowest average wind speed) is April (9.9km/h).

Average humidity in December
Anuradhapura, Sri Lanka

Average humidity in December - Anuradhapura, 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 July, August and September (71%).

Average rainfall in December
Anuradhapura, Sri Lanka

Average rainfall in December - Anuradhapura, Sri Lanka
  • Average rainfall in December: 107mm

The wettest month (with the highest rainfall) is October (205mm).
The driest month (with the least rainfall) is June (20mm).

Average rainfall days in December
Anuradhapura, Sri Lanka

Average rainfall days in December - Anuradhapura, Sri Lanka
  • Average rainfall days in December: 22.4 days

The month with the highest number of rainy days is November (25.5 days).
The month with the least rainy days is July (10.4 days).

Average daylight in December /
Average sunshine in December
Anuradhapura, Sri Lanka

Average daylight in December / Average sunshine in December - Anuradhapura, Sri Lanka
  • Average daylight in December: 11h and 4min

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: 5h and 1min

The months with the most sunshine are May and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in December
Anuradhapura, Sri Lanka

Average sunshine days in December - Anuradhapura, Sri Lanka
  • Average sunshine days in December: 6.5 days

The month with the most sunshine days is July (18.3 days).
The month with the least sunshine days is November (3.2 days).

Average UV index in December
Anuradhapura, Sri Lanka

Average UV index in December - Anuradhapura, Sri Lanka
  • Average UV index in December: 6

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, October, November and December (UV index 6).

Average cloud cover in December
Anuradhapura, Sri Lanka

Average cloud cover in December - Anuradhapura, Sri Lanka
  • Average cloud cover in December: 52

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is March (Cloud cover 26).

Average visibility in December
Anuradhapura, Sri Lanka

Average visibility in December - Anuradhapura, Sri Lanka
  • Average visibility in December: 8km

The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, November and December (8km).

Anuradhapura, Sri Lanka

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