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
During December, the average high-temperature is a still warm 85.5°F, maintaining a close resemblance to that of the preceding month. Katukurunda records an average nighttime low of 75.9°F in December.Heat index
The heat index value for December is appraised at a sweltering 96.8°F. Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Always consider that heat index estimations are for light winds and places in the shade. 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 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In December, the average relative humidity is 79%.Rainfall
In Katukurunda, in December, during 16.5 rainfall days, 3.66" of precipitation is typically accumulated. In Katukurunda, during the entire year, the rain falls for 274.1 days and collects up to 83.27" 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 the month, sunrise is at 06:06 and sunset at 17:52. On the last day of December, sunrise is at 06:20 and sunset at 18:05 +0530.
Sunshine
In December, the average sunshine is 7.1h.UV index
The months with the highest UV index are January through April, July, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 7 translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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 much 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 in Katukurunda?
How many hours of sunshine does Katukurunda have in December?
When is the highest UV index?
What is the UV index reading in December?
Average temperature in December
Katukurunda, Sri Lanka
- Average high temperature in December: 85.5°F
The warmest months (with the highest average high temperature) are March and April (88.3°F).
The month with the lowest average high temperature is August (83.5°F).
- Average low temperature in December: 75.9°F
The month with the highest average low temperature is May (79.3°F).
The coldest month (with the lowest average low temperature) is January (74.1°F).
Average pressure in December
Katukurunda, Sri Lanka
- Average pressure in December: 29.84"Hg
The month with the highest atmospheric pressure is January (29.87"Hg).
The months with the lowest atmospheric pressure are May, June and July (29.79"Hg).
Average wind speed in December
Katukurunda, Sri Lanka
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is June (9.9mph).
The calmest month (with the lowest average wind speed) is March (4.9mph).
Average humidity in December
Katukurunda, 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 (75%).
Average rainfall in December
Katukurunda, Sri Lanka
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is June (13.78").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Katukurunda, Sri Lanka
- Average rainfall days in December: 16.5 days
The months with the highest number of rainy days are July and August (29.5 days).
The month with the least rainy days is January (8.9 days).
Average daylight in December /
Average sunshine in December
Katukurunda, 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: 7h and 1min
The month with the most sunshine is January (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).
Average sunshine days in December
Katukurunda, Sri Lanka
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is January (21 days).
The months with the least sunshine days are June and July (0.3 days).
Average UV index in December
Katukurunda, Sri Lanka
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, July, September, October, November and December (UV index 7).
The months with the lowest UV index are May, June and August (UV index 6).
Average cloud cover in December
Katukurunda, Sri Lanka
- Average cloud cover in December: 37
The months with the most cloud cover are June and September (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in December
Katukurunda, Sri Lanka
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
