Arugam Bay
Sri Lanka
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Arugam Bay, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Arugam Bay, Sri Lanka, with average temperature varying between 29°C (84.2°F) and 23°C (73.4°F).

Temperature

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

Rainfall

December is the month with the most rainfall. Rain falls for 12 days and accumulates 311mm (12.2") of precipitation.

Sea temperature

Months with the coldest seawater in Arugam Bay are January, February, July through September and December, with an average sea temperature of 28°C (82.4°F).
Note: 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

With an average of 11.7h of daylight, December has the shortest days of the year in Arugam Bay, Sri Lanka.

Sunshine

May through December, with an average of 6h of sunshine, are months with the least sunshine in Arugam Bay.

UV index

January, November and December, with an average maximum UV index of 11, are months with the lowest UV index in Arugam Bay. A UV Index of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 11 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Arugam Bay?

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

What is the temperature in December in Arugam Bay?

The average high-temperature, in December, in Arugam Bay, Sri Lanka, is 29°C (84.2°F), while the average low-temperature is 23°C (73.4°F).

How many days does it rain in December in Arugam Bay?

In Arugam Bay, Sri Lanka, during December, the rain falls for 12 days and regularly aggregates up to 311mm (12.2") of precipitation.

What is the wettest month in Arugam Bay?

The month with the most rainfall in Arugam Bay, Sri Lanka, is December when the rain falls for 12 days and typically aggregates up to 311mm (12.2") of precipitation.

What are the months with the coldest sea water in Arugam Bay?

January, February, July through September and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Arugam Bay, Sri Lanka.

How warm is the water in December in Arugam Bay?

In Arugam Bay, in December, the average water temperature is 28°C (82.4°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 Arugam Bay?

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

What is the average length of the day in December in Arugam Bay?

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

What is the month with the least sunshine in Arugam Bay?

May through December, with an average of 6h of sunshine, are months with the least sunshine in Arugam Bay, Sri Lanka.

How long on average sun shines in December in Arugam Bay?

In Arugam Bay, the average sunshine in December is 6h.

When is the lowest UV index in Arugam Bay?

Months with the lowest UV index in Arugam Bay are January, November and December, with an average maximum UV index of 11.

How high is the UV index in December in Arugam Bay?

In December, the average daily maximum UV index in Arugam Bay, Sri Lanka, is 11. A UV Index of 11, and more, symbolizes an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Arugam Bay, Sri Lanka
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are April, May, June and July (32°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 and December (23°C).

Average rainfall in December - Arugam Bay, Sri Lanka
  • Average rainfall in December: 311mm

The wettest month (with the highest rainfall) is December (311mm).
The driest month (with the lowest rainfall) is June (38mm).

Average rainfall days in December - Arugam Bay, Sri Lanka
  • Average rainfall days in December: 12 days

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

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

The best month for swimming (with the highest average sea temperature) is April (30°C).
Coldest months (with the lowest average sea temperature) are January, February, July, August, September and December (28°C).

Average daylight in December / Average sunshine in December - Arugam Bay, 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: 6h

Months with most sunshine are February, March and April (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October, November and December (Average sunshine: 6).

Average UV index in December - Arugam Bay, 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).