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
In December, Udaellepola notes an average high-temperature of a still moderately hot 28.4°C (83.1°F), hardly different from the preceding month. Udaellepola, in December, observes a steady average low-temperature of 19.9°C (67.8°F).Heat index
In December, the average heat index is estimated at a hot 34°C (93.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In Udaellepola, the average relative humidity in December is 85%.Rainfall
In Udaellepola, in December, during 25.6 rainfall days, 209mm (8.23") of precipitation is typically accumulated. Throughout the year, there are 317.3 rainfall days, and 2422mm (95.35") of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 11h and 42min of daylight.On the first day of December in Udaellepola, sunrise is at 06:03 and sunset at 17:49. On the last day of the month, sunrise is at 06:17 and sunset at 18:02 +0530.
Sunshine
The month with the least sunshine is December, with an average of 6h of sunshine.UV index
January through August, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: During December, 6 as the daily maximum UV index converts into the following advice:
Guard against overexposure. Protection from sun-induced harm is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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?
How many hours of daylight does Udaellepola have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Udaellepola have in December?
What is the month with the highest UV index?
What is the UV index reading in December?
Average temperature in December
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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
Udaellepola, 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).
