December weather forecast and climate
Peliyagoda, Sri Lanka

The first month of the winter, December, is still a warm month in Peliyagoda, Sri Lanka, with average temperature fluctuating between 23.7°C (74.7°F) and 29.9°C (85.8°F).

Temperature

In Peliyagoda, the average high-temperature in December is almost the same as in November - a moderately hot 29.9°C (85.8°F). In December, in Peliyagoda, Sri Lanka, the average low-temperature is 23.7°C (74.7°F).

Heat index

The average heat index is calculated to a torrid 37.1°C (98.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like wind, pregnancy, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Peliyagoda is 79%.

Rainfall

In Peliyagoda, during December, the rain falls for 21.1 days and regularly aggregates up to 148mm (5.83") of precipitation. Throughout the year, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Sea temperature

In Peliyagoda, the average seawater temperature is 28.1°C (82.6°F).
Note: 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

In December, the average sunshine in Peliyagoda is 6.9h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Peliyagoda, Sri Lanka. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Peliyagoda?

In December, in Peliyagoda, the average high-temperature is 29.9°C (85.8°F), and the average low-temperature is 23.7°C (74.7°F). In December, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, is estimated at 37.1°C (98.8°F).

What is the average humidity in December in Peliyagoda?

In Peliyagoda, Sri Lanka, the average relative humidity in December is 79%.

How much does it rain in Peliyagoda in December?

In Peliyagoda, Sri Lanka, in December, it is raining for 21.1 days, with typically 148mm (5.83") of accumulated precipitation.

How warm is the water in December in Peliyagoda?

In Peliyagoda, in December, the average water temperature is 28.1°C (82.6°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 Peliyagoda?

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

How many hours of daylight does Peliyagoda have in December?

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

How many hours of sunshine does Peliyagoda have in December?

In Peliyagoda, the average sunshine in December is 6.9h.

What is the month with the highest UV index in Peliyagoda?

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Peliyagoda.

What is the UV index intensity in December in Peliyagoda?

In Peliyagoda, the average daily maximum UV index in December is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in December - Peliyagoda, Sri Lanka
  • Average high temperature in December: 29.9°C

The warmest months (with the highest average high temperature) are March and April (31.8°C).
Months with the lowest average high temperature are July and August (28.9°C).

  • Average low temperature in December: 23.7°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).

Average pressure in December - Peliyagoda, Sri Lanka
  • Average pressure in December: 1010.4mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

Average wind speed in December - Peliyagoda, Sri Lanka
  • Average wind speed in December: 11.5km/h

The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

Average humidity in December - Peliyagoda, Sri Lanka
  • Average humidity in December: 79%

Months with the highest relative humidity are June, July and August (83%).
Months with the lowest relative humidity are January and February (74%).

Average rainfall in December - Peliyagoda, Sri Lanka
  • Average rainfall in December: 148mm

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

Average rainfall days in December - Peliyagoda, Sri Lanka
  • Average rainfall days in December: 21.1 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).

Average sea temperature in December - Peliyagoda, 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 - Peliyagoda, Sri Lanka
  • Average daylight in December: 11.7h

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

  • Average sunshine in December: 6.9h

The month with the most sunshine is January (Average sunshine: 9.1h).
The month with the least sunshine is November (Average sunshine: 6.7h).

Average sunshine days in December - Peliyagoda, Sri Lanka
  • Average sunshine days in December: 8.3 days

The month with the most sunshine days is January (17.2 days).
Months with the least sunshine days are June and August (0.3 days).

Average UV index in December - Peliyagoda, Sri Lanka
  • Average UV index in December: 7

Months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
Months with the lowest UV index are May, June, August and October (UV index 6).

Average cloud cover in December - Peliyagoda, Sri Lanka
  • Average cloud cover in December: 38

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in December - Peliyagoda, Sri Lanka
  • Average visibility in December: 10km

Months with the highest visibility are January, February, March, April and December (10km).
Months with the lowest visibility are May, June, July, August, September, October and November (9km).