December weather forecast and climate
Negombo, Sri Lanka

December, the first month of the winter, in Negombo, is also a warm month, with average temperature ranging between min 22°C (71.6°F) and max 29°C (84.2°F).

Temperature

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

Rainfall

In Negombo, during December, the rain falls for 10 days and regularly aggregates up to 147mm (5.8") of precipitation. Throughout the year, in Negombo, there are 125 rainfall days, and 2345mm (92.3") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Negombo, Sri Lanka, is 28°C (82.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

The average sunshine in December is 7h.

UV index

January, November and December, with an average maximum UV index of 11, are months with the lowest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from unsafe exposure to the UV radiation for average individuals.
The average daily UV index of 11 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the coldest months in Negombo?

The coldest months in Negombo, Sri Lanka, are June through December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in December in Negombo?

In Negombo, in December, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 22°C (71.6°F).

How much does it rain in Negombo in December?

In Negombo, during December, the rain falls for 10 days and regularly aggregates up to 147mm (5.8") of precipitation.

How warm is the water in December in Negombo?

In Negombo, Sri Lanka, the average seawater temperature in December is 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the shortest days in Negombo?

With an average of 11.7h of daylight, December has the shortest days of the year in Negombo.

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

The average length of the day in December is 11.7h.

How many hours of sunshine does Negombo have in December?

In Negombo, the average sunshine in December is 7h.

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

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

How high is the UV index in December in Negombo?

In Negombo, the average daily maximum UV index in December is 11. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Negombo, Sri Lanka
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are February, March, April and May (31°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (29°C).

  • Average low temperature in December: 22°C

The month with the highest average low temperature is May (26°C).
Coldest months (with the lowest average low temperature) are January, February and December (22°C).

Average rainfall in December - Negombo, Sri Lanka
  • Average rainfall in December: 147mm

The wettest month (with the highest rainfall) is May (371mm).
The driest month (with the lowest rainfall) is February (69mm).

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

Months with the highest number of rainy days are October and November (15 days).
Months with the lowest number of rainy days are January and February (4 days).

Average sea temperature in December - Negombo, Sri Lanka
  • Average sea temperature in December: 28°C

The best month for swimming (with the highest average sea temperature) is April (29.7°C).
The coldest month (with the lowest average sea temperature) is August (27°C).

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

Months with the longest days are May, 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 June, July, August, September and October (Average sunshine: 6).

Average UV index in December - Negombo, 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).

deutscheenglishespañolрусский中文