December weather forecastDikwella, Sri Lanka

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Dikwella, Sri Lanka, with an average temperature fluctuating between 29.9°C (85.8°F) and 23.8°C (74.8°F).

Temperature

The commencement of December notes an average high-temperature of a still warm 29.9°C (85.8°F), exhibiting little difference from the previous month. Throughout the nights in December, Dikwella experiences an average low-temperature of 23.8°C (74.8°F).

Heat index

December's mean heat index is evaluated at a torrid 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Dikwella, the average relative humidity in December is 80%.

Rainfall

In Dikwella, in December, during 17.5 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, in Dikwella, there are 180 rainfall days, and 509mm (20.04") of precipitation is accumulated.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Dikwella, Sri Lanka.
On the first day of December in Dikwella, Sri Lanka, sunrise is at 06:02 and sunset at 17:50. On the last day of the month, sunrise is at 06:16 and sunset at 18:03 +0530.

Sunshine

With an average of 6.9h of sunshine, December has the least sunshine of the year in Dikwella.

UV index

The months with the highest UV index in Dikwella are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Dikwella experiences an average high-temperature of 29.9°C (85.8°F) and a low-temperature of 23.8°C (74.8°F). In December, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 37°C (98.6°F).

The average relative humidity in December in Dikwella is 80%.

In December, in Dikwella, the rain falls for 17.5 days. Throughout December, 48mm (1.89") of precipitation is accumulated.

December has the shortest days of the year, with an average of 11h and 48min of daylight.

In Dikwella, the average day length in December is 11h and 47min.

On the first day of December in Dikwella, sunrise is at 06:02 and sunset at 17:50. On the last day of the month, sunrise is at 06:16 and sunset at 18:03 +0530.

The month with the least sunshine in Dikwella, Sri Lanka, is December, with an average of 6.9h of sunshine.

In December, the average sunshine duration in Dikwella, Sri Lanka, is 6.9h.

January through December, with an average maximum UV index of 7, are months with the highest UV index in Dikwella, Sri Lanka.

January through December, with an average maximum UV index of 7, are months with the lowest UV index.

The average daily maximum UV index in December in Dikwella is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

29.8°C

29.9°C

30.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.9km/h

10.4km/h

9.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

7.8

11.2

16.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Dikwella, Sri Lanka

Average high temperature in December: 29.9°C

The warmest months (with the highest average high temperature) are March and April (31.1°C).
The month with the lowest average high temperature is September (29.1°C).

Average low temperature in December: 23.8°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°C).

Average pressure in December
Dikwella, Sri Lanka

Average pressure in December: 1010.2mbar

The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is May (1008.9mbar).

Average wind speed in December
Dikwella, Sri Lanka

Average wind speed in December: 9.6km/h

The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is January (9km/h).

Average humidity in December
Dikwella, Sri Lanka

Average humidity in December: 80%

The months with the highest relative humidity are May, September and November (81%).
The months with the lowest relative humidity are January and February (77%).

Average rainfall in December
Dikwella, Sri Lanka

Average rainfall in December: 48mm

The wettest month (with the highest rainfall) is November (66mm).
The driest month (with the least rainfall) is January (22mm).

Average rainfall days in December
Dikwella, Sri Lanka

Average rainfall days in December: 17.5 days

The month with the highest number of rainy days is November (19.8 days).
The month with the least rainy days is June (10.7 days).

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

Average daylight in December: 11h and 48min

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 48min).

Average sunshine in December: 6h and 54min

The month with the most sunshine is April (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in December
Dikwella, Sri Lanka

Average sunshine days in December: 11.2 days

The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is November (7.8 days).

Average UV index in December
Dikwella, Sri Lanka

Average UV index in December: 7

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

Average cloud cover in December
Dikwella, Sri Lanka

Average cloud cover in December: 38

The month with the most cloud cover is June (Cloud cover 53).
The month with the least cloud cover is February (Cloud cover 26).

Average visibility in December
Dikwella, Sri Lanka

Average visibility in December: 10km

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