December weather forecast
Weragantota, Sri Lanka

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Weather in December

The first month of the winter, December, is still a warm month in Weragantota, Sri Lanka, with an average temperature varying between 27.5°C (81.5°F) and 19.5°C (67.1°F).

Temperature

Weragantota's coldest month, December, generally records average temperatures ranging from a high of 27.5°C (81.5°F) to a low of 19.5°C (67.1°F).

Heat index

During December, the heat index is calculated to be a tropical 31°C (87.8°F). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

December is the most humid month, with an average relative humidity of 84%.

Rainfall

In Weragantota, during December, the rain falls for 22.9 days and regularly aggregates up to 118mm (4.65") of precipitation. In Weragantota, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

The month with the shortest days in Weragantota is December, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:03 and sunset at 17:47. On the last day of the month, sunrise is at 06:17 and sunset at 18:00 +0530.

Sunshine

With an average of 5.7h of sunshine, December has the least sunshine of the year.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Weragantota, Sri Lanka. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What part of the year is the coldest in Weragantota?

Weragantota's December weather reaches an average high of 27.5°C (81.5°F) and an average low of 19.5°C (67.1°F), making it the coldest month.

What are December temperatures in Weragantota?

An average high-temperature, in December, in Weragantota, is 27.5°C (81.5°F) and the average low-temperature is 19.5°C (67.1°F). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 31°C (87.8°F).

What is the most humid month in Weragantota?

With an average relative humidity of 84%, December is the most humid month.

What is the average humidity in December in Weragantota?

In December, the average relative humidity in Weragantota, Sri Lanka, is 84%.

How much does it rain in Weragantota in December?

In Weragantota, Sri Lanka, in December, it is raining for 22.9 days, with typically 118mm (4.65") of accumulated precipitation.

What is the month with the shortest days in Weragantota?

With an average of 11h and 42min of daylight, December has the shortest days of the year in Weragantota.

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

The average day length in December in Weragantota, Sri Lanka, is 11h and 43min.

What time are sunrise and sunset in December in Weragantota?

On the first day of December in Weragantota, Sri Lanka, sunrise is at 06:03 and sunset at 17:47. On the last day of the month, sunrise is at 06:17 and sunset at 18:00 +0530.

What is the month with the least sunshine in Weragantota?

December has the least sunshine of the year in Weragantota, Sri Lanka, with an average of 5.7h of sunshine.

How many hours of sunshine does Weragantota have in December?

The average sunshine duration in December in Weragantota is 5.7h.

When is the highest UV index in Weragantota?

The months with the highest UV index in Weragantota, Sri Lanka, are January through September, November and December, with an average maximum UV index of 6.

What is the UV index intensity in December in Weragantota?

In Weragantota, Sri Lanka, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average wind speed gusts
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Weragantota, Sri Lanka

Average temperature in December - Weragantota, Sri Lanka
  • Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in December: 19.5°C

The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).

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Average pressure in December
Weragantota, Sri Lanka

Average pressure in December - Weragantota, Sri Lanka
  • Average pressure in December: 1010.5mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).

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Average wind speed in December
Weragantota, Sri Lanka

Average wind speed in December - Weragantota, Sri Lanka
  • Average wind speed in December: 6.7km/h

The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

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Average humidity in December
Weragantota, Sri Lanka

Average humidity in December - Weragantota, Sri Lanka
  • Average humidity in December: 84%

The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).

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Average rainfall in December
Weragantota, Sri Lanka

Average rainfall in December - Weragantota, Sri Lanka
  • Average rainfall in December: 118mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).

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Average rainfall days in December
Weragantota, Sri Lanka

Average rainfall days in December - Weragantota, Sri Lanka
  • Average rainfall days in December: 22.9 days

The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).

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Average daylight in December /
Average sunshine in December
Weragantota, Sri Lanka

Average daylight in December / Average sunshine in December - Weragantota, Sri Lanka
  • Average daylight in December: 11h and 4min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in December
Weragantota, Sri Lanka

Average sunshine days in December - Weragantota, Sri Lanka
  • Average sunshine days in December: 6.8 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).

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Average UV index in December
Weragantota, Sri Lanka

Average UV index in December - Weragantota, Sri Lanka
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).

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Average cloud cover in December
Weragantota, Sri Lanka

Average cloud cover in December - Weragantota, Sri Lanka
  • Average cloud cover in December: 47

The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).

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Average visibility in December
Weragantota, Sri Lanka

Average visibility in December - Weragantota, Sri Lanka
  • Average visibility in December: 8km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).

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Weragantota, Sri Lanka

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