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
Weather in December
Temperature
Temperature records mark December as the coldest month, with highs averaging 27.5°C (81.5°F) and lows at 19.5°C (67.1°F).Heat index
December's heat index is computed to be a hot 31°C (87.8°F). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Consider that heat index readings are for situations in the shade and light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. 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 extremely vital to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
With an average relative humidity of 84%, December is the most humid month.Rainfall
In Penideniya, during December, the rain falls for 22.9 days and regularly aggregates up to 118mm (4.65") of precipitation. In Penideniya, during the entire year, the rain falls for 278.9 days and collects up to 1477mm (58.15") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 42min of daylight.On the first day of December, sunrise is at 06:04 and sunset at 17:48. On the last day of the month, sunrise is at 06:19 and sunset at 18:02 +0530.
Sunshine
The month with the least sunshine in Penideniya is December, with an average of 5.7h of sunshine.UV index
January through September, November and December, with an average maximum UV index of 6, 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 radiation for average individuals.Note: The maximum daily UV index of 6 during December translates into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the coldest time of year in Penideniya?
What is the temperature in December in Penideniya?
What is the most humid month in Penideniya?
What is the average humidity in December in Penideniya?
How many days does it rain in December in Penideniya?
What is the month with the shortest days in Penideniya?
What is the average length of the day in December in Penideniya?
When is the sunrise / sunset in December in Penideniya?
What is the month with the least sunshine in Penideniya?
How long on average sun shines in December in Penideniya?
What is the month with the highest UV index in Penideniya?
What is the UV index reading in December in Penideniya?
Average temperature in December
Penideniya, Sri Lanka
- Average high temperature in December: 27.5°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).
- Average low temperature in December: 19.5°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 (18.1°C).
Average pressure in December
Penideniya, Sri Lanka
- Average pressure in December: 1010.5mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in December
Penideniya, Sri Lanka
- Average wind speed in December: 6.7km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in December
Penideniya, Sri Lanka
- Average humidity in December: 84%
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall in December
Penideniya, Sri Lanka
- Average rainfall in December: 118mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in December
Penideniya, Sri Lanka
- Average rainfall days in December: 22.9 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).
Average daylight in December /
Average sunshine in December
Penideniya, 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: 5h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Penideniya, Sri Lanka
- Average sunshine days in December: 6.8 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).
Average UV index in December
Penideniya, Sri Lanka
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in December
Penideniya, Sri Lanka
- Average cloud cover in December: 47
The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility in December
Penideniya, Sri Lanka
- Average visibility in December: 8km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).
Penideniya, Sri Lanka
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