December weather forecast and climate
Kalutara, Sri Lanka

December, the first month of the winter, in Kalutara, is also a hot month, with average temperature varying between 30°C (86°F) and 23°C (73.4°F).

Temperature

The coldest months are June through December, with an average high-temperature of 30°C (86°F).

Rainfall

In Kalutara, in December, during 10 rainfall days, 175mm (6.9") of precipitation is typically accumulated. In Kalutara, during the entire year, the rain falls for 131 days and collects up to 2659mm (104.7") of precipitation.

Sea temperature

In Kalutara, the average seawater temperature in December is 28.1°C (82.6°F).
For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The month with the shortest days is December, with an average of 11.7h of daylight.

Sunshine

In Kalutara, the average sunshine is 7h.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 11.
A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals. Practice all important precautions. Light skin people may get burned in less than 5 minutes.

What is the coldest month in Kalutara?

June through December, with an average high-temperature of 30°C (86°F), are the coldest months in Kalutara.

What is the temperature in December in Kalutara?

In Kalutara, Sri Lanka, in December, the average high-temperature is 30°C (86°F), and the average low-temperature is 23°C (73.4°F).

How much does it rain in Kalutara in December?

In December, in Kalutara, the rain falls for 10 days. Throughout December, 175mm (6.9") of precipitation is accumulated.

How warm is the water in December in Kalutara?

In Kalutara, Sri Lanka, in December, the average water temperature is 28.1°C (82.6°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Kalutara?

December has the shortest days of the year, with an average of 11.7h of daylight.

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

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

How many hours of sunshine does Kalutara have in December?

The average sunshine in December in Kalutara is 7h.

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

January, November and December, with an average maximum UV index of 11, are months with the lowest UV index.

What is the UV index intensity in December in Kalutara?

The average daily maximum UV index in December in Kalutara is 11. A UV Index of 11, and more, symbolizes an extreme health threat from the exposure to the Sun's UV rays.
Average temperature in December - Kalutara, Sri Lanka
  • Average high temperature in December: 30°C

The warmest month (with the highest average high temperature) is April (32°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (30°C).

  • Average low temperature in December: 23°C

Months with the highest average low temperature are May, June, July, August and September (25°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average rainfall in December - Kalutara, Sri Lanka
  • Average rainfall in December: 175mm

The wettest month (with the highest rainfall) is May (388mm).
The driest month (with the lowest rainfall) is January (73mm).

Average rainfall days in December - Kalutara, Sri Lanka
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is October (15 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in December - Kalutara, Sri Lanka
  • Average sea temperature in December: 28.1°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

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

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in December: 7h

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

Average UV index in December - Kalutara, Sri Lanka
  • Average UV index in December: 11

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).

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