Polonnaruwa
Sri Lanka
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Polonnaruwa, Sri Lanka

December, the first month of the winter, in Polonnaruwa, is still a warm month, with average temperature fluctuating between 23°C (73.4°F) and 29°C (84.2°F).

Temperature

The coldest months are January and December, with an average high-temperature of 29°C (84.2°F).

Rainfall

The month with the most rainfall is December when the rain falls for 14 days and typically aggregates up to 322mm (12.7") of precipitation.

Daylight

Months with the shortest days are January and December, with an average of 11.7h of daylight.

Sunshine

Months with the least sunshine in Polonnaruwa are June, July, September through December, with an average of 6h of sunshine.

UV index

December is the month with the lowest UV index in Polonnaruwa, with an average maximum UV index of 10. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 10 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used.

What is the coldest month in Polonnaruwa?

The coldest months are January and December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in December in Polonnaruwa?

In December, in Polonnaruwa, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 23°C (73.4°F).

How many days does it rain in December in Polonnaruwa?

In Polonnaruwa, Sri Lanka, during December, the rain falls for 14 days and regularly aggregates up to 322mm (12.7") of precipitation.

What is the rainiest month in Polonnaruwa?

The month with the most rainfall in Polonnaruwa, Sri Lanka, is December when the rain falls for 14 days and typically aggregates up to 322mm (12.7") of precipitation.

What is the month with the shortest days in Polonnaruwa?

January and December, with an average of 11.7h of daylight, are months with the shortest days.

What is the average length of the day in December in Polonnaruwa?

In December, the average length of the day is 11.7h.

What is the month with the least sunshine in Polonnaruwa?

Months with the least sunshine are June, July, September through December, with an average of 6h of sunshine.

How long on average sun shines in December in Polonnaruwa?

In December, the average sunshine is 6h.

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

With an average maximum UV index of 10, December is the month with the lowest UV index in Polonnaruwa.

How high is the UV index in December in Polonnaruwa?

In December, the average daily maximum UV index in Polonnaruwa is 10. A UV Index value of 8 to 10 symbolizes a very high hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Polonnaruwa, Sri Lanka
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are April, May and June (33°C).
Months with the lowest average high temperature are January and December (29°C).

  • Average low temperature in December: 23°C

Months with the highest average low temperature are April, May, June, July and August (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (23°C).

Average rainfall in December - Polonnaruwa, Sri Lanka
  • Average rainfall in December: 322mm

The wettest month (with the highest rainfall) is December (322mm).
The driest month (with the lowest rainfall) is June (48mm).

Average rainfall days in December - Polonnaruwa, Sri Lanka
  • Average rainfall days in December: 14 days

The month with the highest number of rainy days is November (15 days).
The month with the lowest number of rainy days is February (5 days).

Average daylight in December / Average sunshine in December - Polonnaruwa, Sri Lanka
  • Average daylight in December: 11.7h

The month with the longest days is June (Average daylight: 12.6h).
Months with shortest days are January and December (Average daylight: 11.7h).

  • Average sunshine in December: 6h

The month with most sunshine is March (Average sunshine: 9h).
Months with least sunshine are June, July, September, October, November and December (Average sunshine: 6).

Average UV index in December - Polonnaruwa, Sri Lanka
  • Average UV index in December: 10

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).