December weather forecastViedma, Argentina
December
Weather in December
With December comes the height of summer in Viedma, Argentina. It is the fascinating contrast from November’s weather that greets city dwellers and tourists alike. The extended daylight hours proclaim the advent of the longest days of the year. Correspondingly, the wind speeds also exhibit a noticeable increase from November, adding to the unique December weather experience. Over the course of December, temperature swings are observed, soaring from a daytime high of 27.1°C (80.8°F) to an evening low of 16.4°C (61.5°F).Temperature
In Viedma, the average high-temperature in December slightly increases from a warm 23.9°C (75°F) in November to a still moderately hot 27.1°C (80.8°F). Viedma's average low-temperature for the month of December records at a refreshing 16.4°C (61.5°F).Heat index
December's mean heat index is appraised at 27°C (80.6°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
January and December, with an average relative humidity of 41%, are the least humid months in Viedma.Rainfall
In Viedma, during December, the rain falls for 6.6 days and regularly aggregates up to 16mm (0.63") of precipitation. In Viedma, during the entire year, the rain falls for 81 days and collects up to 204mm (8.03") of precipitation.Snowfall
January through June, August through December are months without snowfall.Daylight
December has the longest days of the year in Viedma, with an average of 15h and 0min of daylight.On the first day of the month, sunrise is at 05:34 and sunset at 20:27. On the last day of December, sunrise is at 05:43 and sunset at 20:46 -03.
Sunshine
The month with the most sunshine in Viedma is December, with an average of 11.6h of sunshine.UV index
The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 6 during December translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Viedma, Argentina
- Average high temperature in December: 27.1°C
The warmest month (with the highest average high temperature) is January (28.8°C).
The month with the lowest average high temperature is July (12.4°C).
- Average low temperature in December: 16.4°C
The months with the highest average low temperature are January and February (18.2°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).
Average pressure in December
Viedma, Argentina
- Average pressure in December: 1008.9mbar
The month with the highest atmospheric pressure is September (1016.6mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in December
Viedma, Argentina
- Average wind speed in December: 21.8km/h
The windiest month (with the highest average wind speed) is June (22.4km/h).
The calmest months (with the lowest average wind speed) are April and May (19.7km/h).
Average humidity in December
Viedma, Argentina
- Average humidity in December: 41%
The month with the highest relative humidity is July (61%).
The months with the lowest relative humidity are January and December (41%).
Average rainfall in December
Viedma, Argentina
- Average rainfall in December: 16mm
The wettest month (with the highest rainfall) is March (27mm).
The driest months (with the least rainfall) are January and June (12mm).
Average rainfall days in December
Viedma, Argentina
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Viedma, Argentina
- Average snowfall in December: 0mm
The month with the highest snowfall is July (1mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).
Average snowfall days in December
Viedma, Argentina
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are July, August and September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Viedma, Argentina
- Average daylight in December: 15h and 0min
The month with the longest days is December (Average daylight: 15h and 0min).
The month with the shortest days is June (Average daylight: 9h and 18min).
- Average sunshine in December: 11h and 36min
The month with the most sunshine is December (Average sunshine: 11h and 36min).
The month with the least sunshine is June (Average sunshine: 6h and 18min).
Average sunshine days in December
Viedma, Argentina
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is March (20.6 days).
Average UV index in December
Viedma, Argentina
- Average UV index in December: 6
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 3).
Average cloud cover in December
Viedma, Argentina
- Average cloud cover in December: 16
The month with the most cloud cover is July (Cloud cover 33).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in December
Viedma, Argentina
- 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).





