Galle
Sri Lanka
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Galle, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Galle, Sri Lanka, with temperature in the range of an average low of 22°C (71.6°F) and an average high of 29°C (84.2°F).

Temperature

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

Rainfall

In Galle, during 10 rainfall days, 178mm (7") of precipitation is typically accumulated. In Galle, during the entire year, the rain falls for 122 days and collects up to 2402mm (94.6") of precipitation.

Sea temperature

In Galle, Sri Lanka, the average seawater temperature in December is 28.2°C (82.8°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

Months with the shortest days are January, November and December, with an average of 11.8h of daylight.

Sunshine

In Galle, the average sunshine is 7h.

UV index

November and December, with an average maximum UV index of 11, are months with the lowest UV index in Galle. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
In December, the average maximum UV index of 11 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the coldest month in Galle?

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

What is the temperature in December in Galle?

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

How many days does it rain in December in Galle?

In Galle, Sri Lanka, in December, it is raining for 10 days, with typically 178mm (7") of accumulated precipitation.

What is the water temperature in December in Galle?

In Galle, Sri Lanka, in December, the average water temperature is 28.2°C (82.8°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 Galle?

January, November and December, with an average of 11.8h of daylight, are months with the shortest days.

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

In December, the average length of the day in Galle, Sri Lanka, is 11.8h.

How long on average sun shines in December in Galle?

The average sunshine in December is 7h.

What are the months with the lowest UV index in Galle?

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

How high is the UV index in December in Galle?

In Galle, the average daily maximum UV index in December is 11. A UV Index reading of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Galle, Sri Lanka
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are January, 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 (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (22°C).

Average rainfall in December - Galle, Sri Lanka
  • Average rainfall in December: 178mm

The wettest month (with the highest rainfall) is October (340mm).
The driest month (with the lowest rainfall) is February (86mm).

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

Months with the highest number of rainy days are October and November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in December - Galle, Sri Lanka
  • Average sea temperature in December: 28.2°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 (27.5°C).

Average daylight in December / Average sunshine in December - Galle, Sri Lanka
  • Average daylight in December: 11.8h

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in December: 7h

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

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

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