December weather forecastViamão, Brazil
December weather for Viamão, Brazil: The first month of the summer, December, is also a moderately hot month in Viamão, Brazil, with an average temperature fluctuating between 19.4°C (66.9°F) and 29.1°C (84.4°F). January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Viamão, Brazil.
December
Weather in December
The first month of the summer, December, is also a moderately hot month in Viamão, Brazil, with an average temperature fluctuating between 19.4°C (66.9°F) and 29.1°C (84.4°F).Temperature
The transition into December notes an average high-temperature of a still warm 29.1°C (84.4°F), revealing a mild distinction from the 26.7°C (80.1°F) in November. Viamão, in December, witnesses an average low-temperature of 19.4°C (66.9°F).Heat index
The heat index value for December is appraised at a hot 33°C (91.4°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.The heat index's values are generally associated with conditions in shade and light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The least humid month is December, with an average relative humidity of 72%.Rainfall
In Viamão, in December, during 14 rainfall days, 79mm (3.11") of precipitation is typically accumulated. Throughout the year, in Viamão, there are 163.2 rainfall days, and 918mm (36.14") of precipitation is accumulated.Daylight
December has the longest days of the year, with an average of 14h and 0min of daylight.On the first day of December in Viamão, sunrise is at 05:14 and sunset at 19:11. On the last day of the month, sunrise is at 05:25 and sunset at 19:28 -03.
Sunshine
January, November and December, with an average of 8.3h of sunshine, are months with the most sunshine.UV index
January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Viamão, Brazil. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 6 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Viamão, Brazil
- Average high temperature in December: 29.1°C
The warmest month (with the highest average high temperature) is February (30.3°C).
The month with the lowest average high temperature is July (18.6°C).
- Average low temperature in December: 19.4°C
The month with the highest average low temperature is February (20.5°C).
The coldest month (with the lowest average low temperature) is July (11.1°C).
Average pressure in December
Viamão, Brazil
- Average pressure in December: 1011.4mbar
The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in December
Viamão, Brazil
- Average wind speed in December: 13.1km/h
The windiest month (with the highest average wind speed) is October (13.3km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in December
Viamão, Brazil
- Average humidity in December: 72%
The months with the highest relative humidity are May, June, July and September (80%).
The month with the lowest relative humidity is December (72%).
Average rainfall in December
Viamão, Brazil
- Average rainfall in December: 79mm
The wettest month (with the highest rainfall) is July (103mm).
The driest month (with the least rainfall) is April (54mm).
Average rainfall days in December
Viamão, Brazil
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is January (17.3 days).
The month with the least rainy days is June (11.1 days).
Average daylight in December /
Average sunshine in December
Viamão, Brazil
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 12min).
- Average sunshine in December: 8h and 18min
The months with the most sunshine are January, November and December (Average sunshine: 8h and 18min).
The month with the least sunshine is September (Average sunshine: 7h and 6min).
Average sunshine days in December
Viamão, Brazil
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is July (18.1 days).
The month with the least sunshine days is February (11.2 days).
Average UV index in December
Viamão, Brazil
- Average UV index in December: 6
The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are May and June (UV index 4).
Average cloud cover in December
Viamão, Brazil
- Average cloud cover in December: 32
The month with the most cloud cover is September (Cloud cover 40).
The month with the least cloud cover is November (Cloud cover 31).
Average visibility in December
Viamão, Brazil
- Average visibility in December: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).
