Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The average high-temperature during December is a still moderately hot 28.4°C (83.1°F), almost matching the conditions of the preceding month. During December, the average low-temperature is recorded at a refreshing 19.9°C (67.8°F).Heat index
The heat index in December is computed to be a hot 34°C (93.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In Pelawatta, the average relative humidity in December is 85%.Rainfall
In Pelawatta, Sri Lanka, in December, it is raining for 25.6 days, with typically 209mm (8.23") of accumulated precipitation. Throughout the year, there are 317.3 rainfall days, and 2422mm (95.35") of precipitation is accumulated.Daylight
With an average of 11h and 48min of daylight, December has the shortest days of the year in Pelawatta.On the first day of December in Pelawatta, sunrise is at 06:04 and sunset at 17:51. On the last day of the month, sunrise is at 06:19 and sunset at 18:05 +0530.
Sunshine
December has the least sunshine of the year in Pelawatta, with an average of 6h of sunshine.UV index
The months with the highest UV index in Pelawatta are January through August, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during December leads to these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
Is it hot in Pelawatta during December?
What is the average humidity in December in Pelawatta?
How much does it rain in Pelawatta in December?
What is the month with the shortest days in Pelawatta?
How many hours of daylight does Pelawatta have in December?
What time are sunrise and sunset in December in Pelawatta?
What is the month with the least sunshine in Pelawatta?
How many hours of sunshine does Pelawatta have in December?
When is the highest UV index in Pelawatta?
What is the UV index reading in December in Pelawatta?
Average temperature in December
Pelawatta, Sri Lanka
- Average high temperature in December: 28.4°C
The warmest month (with the highest average high temperature) is March (31.1°C).
The months with the lowest average high temperature are June and July (27.3°C).
- Average low temperature in December: 19.9°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 (18.7°C).
Average pressure in December
Pelawatta, 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
Pelawatta, Sri Lanka
- Average wind speed in December: 4.3km/h
The windiest month (with the highest average wind speed) is July (8.8km/h).
The calmest months (with the lowest average wind speed) are February and March (3.9km/h).
Average humidity in December
Pelawatta, Sri Lanka
- Average humidity in December: 85%
The months with the highest relative humidity are May and June (88%).
The months with the lowest relative humidity are January and February (80%).
Average rainfall in December
Pelawatta, Sri Lanka
- Average rainfall in December: 209mm
The wettest month (with the highest rainfall) is October (357mm).
The driest month (with the least rainfall) is January (85mm).
Average rainfall days in December
Pelawatta, Sri Lanka
- Average rainfall days in December: 25.6 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is January (18.9 days).
Average daylight in December /
Average sunshine in December
Pelawatta, Sri Lanka
- Average daylight in December: 11h and 5min
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 0min
The month with the most sunshine is April (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Pelawatta, Sri Lanka
- Average sunshine days in December: 3.6 days
The month with the most sunshine days is January (9.2 days).
The month with the least sunshine days is April (0.2 days).
Average UV index in December
Pelawatta, Sri Lanka
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, November and December (UV index 6).
The months with the lowest UV index are September and October (UV index 5).
Average cloud cover in December
Pelawatta, Sri Lanka
- Average cloud cover in December: 47
The month with the most cloud cover is June (Cloud cover 65).
The month with the least cloud cover is January (Cloud cover 33).
Average visibility in December
Pelawatta, Sri Lanka
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, June, July, August and December (8km).
The months with the lowest visibility are April, May, September, October and November (7km).
Pelawatta, Sri Lanka
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