December weather forecastValayanmadam, Sri Lanka
December weather for Valayanmadam, Sri Lanka: The first month of the winter, December, is also a moderately hot month in Valayanmadam, Sri Lanka, with an average temperature fluctuating between 26.1°C (79°F) and 27.5°C (81.5°F). On the first day of December in Valayanmadam, Sri Lanka, sunrise is at 06:07 and sunset at 17:44.
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Valayanmadam, Sri Lanka, with an average temperature fluctuating between 26.1°C (79°F) and 27.5°C (81.5°F).Temperature
With the start of December, Valayanmadam measures an average high-temperature of a still warm 27.5°C (81.5°F), not significantly differing from November's 28.4°C (83.1°F). December nights in Valayanmadam reflect a consistent temperature dip to a still moderately hot 26.1°C (79°F), a slight descent from daytime peaks.Heat index
The heat index value for December is evaluated at a tropical 31°C (87.8°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In December, the average relative humidity in Valayanmadam, Sri Lanka, is 78%.Rainfall
In Valayanmadam, during December, the rain falls for 20 days and regularly aggregates up to 140mm (5.51") of precipitation. In Valayanmadam, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.Daylight
With an average of 11h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 06:07 and sunset at 17:44. On the last day of the month, sunrise is at 06:22 and sunset at 17:57 +0530.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Valayanmadam. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 7 translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Valayanmadam, Sri Lanka
- Average high temperature in December: 27.5°C
The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in December: 26.1°C
The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).
Average pressure in December
Valayanmadam, Sri Lanka
- Average pressure in December: 1010.9mbar
The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.9mbar).
Average wind speed in December
Valayanmadam, Sri Lanka
- Average wind speed in December: 23.1km/h
The windiest month (with the highest average wind speed) is June (33.8km/h).
The calmest months (with the lowest average wind speed) are March and April (16.7km/h).
Average humidity in December
Valayanmadam, Sri Lanka
- Average humidity in December: 78%
The months with the highest relative humidity are May, August and September (79%).
The month with the lowest relative humidity is March (75%).
Average rainfall in December
Valayanmadam, Sri Lanka
- Average rainfall in December: 140mm
The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is March (13mm).
Average rainfall days in December
Valayanmadam, Sri Lanka
- Average rainfall days in December: 20 days
The month with the highest number of rainy days is October (22.6 days).
The month with the least rainy days is March (5.8 days).
Average daylight in December /
Average sunshine in December
Valayanmadam, Sri Lanka
- Average daylight in December: 11h and 36min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Valayanmadam, Sri Lanka
- Average sunshine days in December: 7 days
The month with the most sunshine days is March (23.9 days).
The month with the least sunshine days is November (6.3 days).
Average UV index in December
Valayanmadam, Sri Lanka
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).
Average cloud cover in December
Valayanmadam, Sri Lanka
- Average cloud cover in December: 47
The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).
Average visibility in December
Valayanmadam, Sri Lanka
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
