December weather forecast
Kirindiwela, Sri Lanka

December

Weather in December

December, the first month of the winter in Kirindiwela, is also a moderately hot month, with temperature in the range of an average low of 23.7°C (74.7°F) and an average high of 29.9°C (85.8°F).

Temperature

Transitioning into December, Kirindiwela experiences an average high-temperature of a moderately hot 29.9°C (85.8°F), marking a minor shift from the preceding month. Throughout December, an average low-temperature of 23.7°C (74.7°F) is experienced in Kirindiwela.

Heat index

December's heat index is estimated at a torrid 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in December in Kirindiwela is 79%.

Rainfall

In December, in Kirindiwela, the rain falls for 21.1 days. Throughout December, 148mm (5.83") of precipitation is accumulated. In Kirindiwela, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Kirindiwela.
On the first day of the month, sunrise is at 06:06 and sunset at 17:50. On the last day of December, in Kirindiwela, sunrise is at 06:20 and sunset at 18:04 +0530.

Sunshine

The average sunshine in December in Kirindiwela 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. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

How hot is December in Kirindiwela?
An average high-temperature, in December, in Kirindiwela, is 29.9°C (85.8°F) and the average low-temperature is 23.7°C (74.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in December is estimated at 37°C (98.6°F).
What is the average humidity in December in Kirindiwela?
In Kirindiwela, Sri Lanka, the average relative humidity in December is 79%.
How many days does it rain in December in Kirindiwela?
In Kirindiwela, in December, during 21.1 rainfall days, 148mm (5.83") of precipitation is typically accumulated.
What is the month with the shortest days in Kirindiwela?
December has the shortest days of the year in Kirindiwela, with an average of 11h and 42min of daylight.
How many hours of daylight does Kirindiwela have in December?
In December, the average day length in Kirindiwela, Sri Lanka, is 11h and 43min.
What time are sunrise and sunset in December in Kirindiwela?
In December, on the first day of the month, sunrise is at 06:06 and sunset at 17:50. On the last day of the month, sunrise is at 06:20 and sunset at 18:04 +0530.
How many hours of sunshine does Kirindiwela have in December?
In Kirindiwela, Sri Lanka, the average sunshine duration in December is 6.9h.
What is the month with the highest UV index in Kirindiwela?
The months with the highest UV index in Kirindiwela, Sri Lanka, are January through April, July, September, November and December, with an average maximum UV index of 7.
What is the UV index intensity in December in Kirindiwela?
The average daily maximum UV index in December in Kirindiwela, Sri Lanka, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Kirindiwela, 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).
The 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
Kirindiwela, 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
Kirindiwela, 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
Kirindiwela, Sri Lanka
  • Average humidity in December: 79%

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

Average rainfall in December
Kirindiwela, 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
Kirindiwela, 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 daylight in December /
Average sunshine in December
Kirindiwela, 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: 6h and 5min

The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days in December
Kirindiwela, Sri Lanka
  • Average sunshine days in December: 8.3 days

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

Average UV index in December
Kirindiwela, Sri Lanka
  • Average UV index in December: 7

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

Average cloud cover in December
Kirindiwela, 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
Kirindiwela, Sri Lanka
  • Average visibility in December: 10km

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

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