December weather forecast
Nungamugoda, Sri Lanka

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Weather in December

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

Temperature

Entering December, the average high-temperature is recorded at a warm 29.9°C (85.8°F), exhibiting a minimal shift from November's 30.1°C (86.2°F). During the month of December, Nungamugoda experiences a steady low-temperature average of 23.7°C (74.7°F).

Heat index

Throughout December, the heat index is computed to be a torrid 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In December, the rain falls for 21.1 days. Throughout December, 148mm (5.83") of precipitation is accumulated. In Nungamugoda, 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 Nungamugoda.
On the first day of December, sunrise is at 06:06 and sunset at 17:51. On the last day of the month, sunrise is at 06:21 and sunset at 18:05 +0530.

Sunshine

In Nungamugoda, the average sunshine in December 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 value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

How hot is December in Nungamugoda?

The high-temperature during December is 29.9°C (85.8°F) and the low-temperature is 23.7°C (74.7°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in December is computed to be 37°C (98.6°F).

What is the average humidity in December in Nungamugoda?

In December, the average relative humidity is 79%.

How much does it rain in Nungamugoda in December?

In December, the rain falls for 21.1 days. Throughout December, 148mm (5.83") of precipitation is accumulated.

What is the month with the shortest days in Nungamugoda?

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

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

The average day length in December is 11h and 44min.

When is the sunrise / sunset in December in Nungamugoda?

In December, on the first day of the month, sunrise is at 06:06 and sunset at 17:51. On the last day of the month, in Nungamugoda, Sri Lanka, sunrise is at 06:21 and sunset at 18:05 +0530.

How long on average sun shines in December in Nungamugoda?

In Nungamugoda, the average sunshine duration in December is 6.9h.

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

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

What is the UV index reading in December in Nungamugoda?

The average daily maximum UV index in December is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
Nungamugoda, Sri Lanka

Average temperature in December - Nungamugoda, 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).

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Average pressure in December
Nungamugoda, Sri Lanka

Average pressure in December - Nungamugoda, 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).

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Average wind speed in December
Nungamugoda, Sri Lanka

Average wind speed in December - Nungamugoda, 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).

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Average humidity in December
Nungamugoda, Sri Lanka

Average humidity in December - Nungamugoda, 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%).

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Average rainfall in December
Nungamugoda, Sri Lanka

Average rainfall in December - Nungamugoda, 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).

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Average rainfall days in December
Nungamugoda, Sri Lanka

Average rainfall days in December - Nungamugoda, 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).

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

Average daylight in December / Average sunshine in December - Nungamugoda, 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).

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Average sunshine days in December
Nungamugoda, Sri Lanka

Average sunshine days in December - Nungamugoda, 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).

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Average UV index in December
Nungamugoda, Sri Lanka

Average UV index in December - Nungamugoda, 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).

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Average cloud cover in December
Nungamugoda, Sri Lanka

Average cloud cover in December - Nungamugoda, 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).

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Average visibility in December
Nungamugoda, Sri Lanka

Average visibility in December - Nungamugoda, 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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Nungamugoda, Sri Lanka

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