December weather forecastPeriyamulla, Sri Lanka
December weather for Periyamulla, Sri Lanka: December, the first month of the winter in Periyamulla, is also a moderately hot month, with an average temperature varying between 29.9°C (85.8°F) and 23.7°C (74.7°F). With an average of 11h and 42min of daylight, December has the shortest days of the year in Periyamulla, Sri Lanka.
December
Weather in December
December, the first month of the winter in Periyamulla, is also a moderately hot month, with an average temperature varying between 29.9°C (85.8°F) and 23.7°C (74.7°F).Temperature
Periyamulla experiences a recorded average high-temperature of a moderately hot 29.9°C (85.8°F) in December, closely aligned with November's 30.2°C (86.4°F). During December, the average low-temperature is 23.7°C (74.7°F).Heat index
For most parts of December, the heat index is estimated at a fiery hot 37°C (98.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Heat index evaluations are typically in the context of light winds and shaded environments. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In Periyamulla, the average relative humidity in December is 79%.Rainfall
In Periyamulla, in December, it is raining for 20.3 days, with typically 139mm (5.47") of accumulated precipitation. In Periyamulla, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.Daylight
With an average of 11h and 42min of daylight, December has the shortest days of the year in Periyamulla.On the first day of December, sunrise is at 06:07 and sunset at 17:51. On the last day of the month, sunrise is at 06:22 and sunset at 18:05 +0530.
Sunshine
In December, the average sunshine in Periyamulla is 7h.UV index
January through April, July, September, November 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 health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 7 in December interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Periyamulla, Sri Lanka
- Average high temperature in December: 29.9°C
The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).
- Average low temperature in December: 23.7°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).
Average pressure in December
Periyamulla, Sri Lanka
- Average pressure in December: 1010.5mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).
Average wind speed in December
Periyamulla, Sri Lanka
- Average wind speed in December: 14.1km/h
The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).
Average humidity in December
Periyamulla, Sri Lanka
- Average humidity in December: 79%
The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).
Average rainfall in December
Periyamulla, Sri Lanka
- Average rainfall in December: 139mm
The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in December
Periyamulla, Sri Lanka
- Average rainfall days in December: 20.3 days
The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).
Average daylight in December /
Average sunshine in December
Periyamulla, Sri Lanka
- Average daylight in December: 11h and 42min
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: 7h and 0min
The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in December
Periyamulla, Sri Lanka
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).
Average UV index in December
Periyamulla, Sri Lanka
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover in December
Periyamulla, Sri Lanka
- Average cloud cover in December: 36
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).
Average visibility in December
Periyamulla, Sri Lanka
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).
