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
Weeraketiya measures an average high-temperature of a still moderately hot 29.9°C (85.8°F) in December, nearly consistent with the preceding month. Weeraketiya reports a consistent average low-temperature of 23.8°C (74.8°F) throughout December nights.Heat index
For December, the heat index is estimated at a sweltering 37°C (98.6°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In Weeraketiya, the average relative humidity in December is 80%.Rainfall
In Weeraketiya, in December, it is raining for 17.5 days, with typically 48mm (1.89") of accumulated precipitation. In Weeraketiya, during the entire year, the rain falls for 180 days and collects up to 509mm (20.04") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 48min of daylight.On the first day of December, sunrise is at 06:02 and sunset at 17:49. On the last day of the month, sunrise is at 06:16 and sunset at 18:03 +0530.
Sunshine
December has the least sunshine of the year, with an average of 6.9h of sunshine.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Weeraketiya are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 7 suggests this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in December?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Weeraketiya have in December?
What is the month with the highest UV index?
What are the months with the lowest UV index in Weeraketiya?
What is the UV index reading in December?
Average temperature in December
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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 5min
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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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
Weeraketiya, 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).
