December weather forecastSiddamulla, Sri Lanka
December
Weather in December
December, the first month of the winter in Siddamulla, is also a moderately hot month, with temperature in the range of an average low of 24.1°C (75.4°F) and an average high of 29.7°C (85.5°F).Temperature
Siddamulla's weather in December displays an average high-temperature of a warm 29.7°C (85.5°F), showing minor disparity from November's 30°C (86°F). Siddamulla observes an average nighttime temperature of 24.1°C (75.4°F) during December.Heat index
The heat index in December is appraised at a very hot 36°C (96.8°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
The average relative humidity in December is 79%.Rainfall
In Siddamulla, in December, it is raining for 19.9 days, with typically 124mm (4.88") of accumulated precipitation. Throughout the year, there are 272.3 rainfall days, and 2039mm (80.28") of precipitation is accumulated.Daylight
The month with the shortest days in Siddamulla is December, with an average of 11h and 42min of daylight.On the first day of the month, sunrise is at 06:06 and sunset at 17:51. On the last day of December, sunrise is at 06:21 and sunset at 18:05 +0530.
Sunshine
The average sunshine in December is 7h.UV index
The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Siddamulla, Sri Lanka
- Average high temperature in December: 29.7°C
The warmest months (with the highest average high temperature) are March and April (31.4°C).
The month with the lowest average high temperature is August (28.6°C).
- Average low temperature in December: 24.1°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 (23.3°C).
Average pressure in December
Siddamulla, 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
Siddamulla, Sri Lanka
- Average wind speed in December: 11.6km/h
The windiest month (with the highest average wind speed) is June (15.9km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity in December
Siddamulla, Sri Lanka
- Average humidity in December: 79%
The months with the highest relative humidity are June, July and August (83%).
The month with the lowest relative humidity is January (74%).
Average rainfall in December
Siddamulla, Sri Lanka
- Average rainfall in December: 124mm
The wettest month (with the highest rainfall) is June (329mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in December
Siddamulla, Sri Lanka
- Average rainfall days in December: 19.9 days
The month with the highest number of rainy days is August (29.8 days).
The month with the least rainy days is January (11.2 days).
Average daylight in December /
Average sunshine in December
Siddamulla, 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 month with the most sunshine is January (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in December
Siddamulla, Sri Lanka
- Average sunshine days in December: 8.9 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is July (0.4 days).
Average UV index in December
Siddamulla, 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
Siddamulla, Sri Lanka
- Average cloud cover in December: 37
The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in December
Siddamulla, Sri Lanka
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
