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
December
Weather in December
Temperature
The arrival of December records an average high-temperature of a still warm 28.5°C (83.3°F), closely related to the 29.1°C (84.4°F) observed in November. During December, Tanduvan's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 25°C (77°F).Heat index
The heat index value for December is estimated at a hot 33°C (91.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
November and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In December, the rain falls for 20.5 days. Throughout December, 130mm (5.12") of precipitation is accumulated. In Tanduvan, during the entire year, the rain falls for 181.2 days and collects up to 849mm (33.43") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 36min of daylight.On the first day of the month, sunrise is at 06:07 and sunset at 17:45. On the last day of December, sunrise is at 06:22 and sunset at 17:58 +0530.
Sunshine
The months with the least sunshine are November and December, with an average of 5.7h of sunshine.UV index
January through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 7 in December leads to these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in December?
What are the most humid months?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days in Tanduvan?
How many hours of daylight does Tanduvan have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Tanduvan have in December?
What are the months with the highest UV index?
How high is the UV index in December?
Average temperature in December
Tanduvan, Sri Lanka
- Average high temperature in December: 28.5°C
The warmest month (with the highest average high temperature) is April (31.4°C).
The month with the lowest average high temperature is January (28.4°C).
- Average low temperature in December: 25°C
The month with the highest average low temperature is May (28.1°C).
The coldest month (with the lowest average low temperature) is February (23.9°C).
Average pressure in December
Tanduvan, Sri Lanka
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is June (1006.5mbar).
Average wind speed in December
Tanduvan, Sri Lanka
- Average wind speed in December: 20km/h
The windiest month (with the highest average wind speed) is June (32.4km/h).
The calmest month (with the lowest average wind speed) is April (15.4km/h).
Average humidity in December
Tanduvan, Sri Lanka
- Average humidity in December: 79%
The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is March (75%).
Average rainfall in December
Tanduvan, Sri Lanka
- Average rainfall in December: 130mm
The wettest month (with the highest rainfall) is November (207mm).
The driest month (with the least rainfall) is June (28mm).
Average rainfall days in December
Tanduvan, Sri Lanka
- Average rainfall days in December: 20.5 days
The months with the highest number of rainy days are October and November (23.8 days).
The month with the least rainy days is February (9.1 days).
Average daylight in December /
Average sunshine in December
Tanduvan, Sri Lanka
- Average daylight in December: 11h and 4min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 42min).
Average sunshine days in December
Tanduvan, Sri Lanka
- Average sunshine days in December: 8 days
The month with the most sunshine days is March (19 days).
The month with the least sunshine days is November (4.4 days).
Average UV index in December
Tanduvan, 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 and December (UV index 7).
The month with the lowest UV index is November (UV index 6).
Average cloud cover in December
Tanduvan, Sri Lanka
- Average cloud cover in December: 44
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is March (Cloud cover 18).
Average visibility in December
Tanduvan, Sri Lanka
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
