December weather forecastFlamengo, Brazil
December
Weather in December
December, the first month of the summer in Flamengo, is still a warm month, with an average temperature varying between 28.2°C (82.8°F) and 23°C (73.4°F).Temperature
Flamengo experiences a minor change to a still warm 28.2°C (82.8°F) in average high-temperature during December, closely reflecting November. Flamengo's nighttime temperature in December drops to an average of 23°C (73.4°F).Heat index
December's mean heat index is appraised at a tropical 33°C (91.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in December is 81%.Rainfall
In Flamengo, Brazil, in December, during 21.9 rainfall days, 98mm (3.86") of precipitation is typically accumulated. In Flamengo, during the entire year, the rain falls for 192.5 days and collects up to 812mm (31.97") of precipitation.Daylight
With an average of 13h and 30min of daylight, December has the longest days of the year in Flamengo.On the first day of the month, sunrise is at 04:58 and sunset at 18:25. On the last day of December, in Flamengo, Brazil, sunrise is at 05:10 and sunset at 18:41 -03.
Sunshine
In Flamengo, Brazil, the average sunshine in December is 8.3h.UV index
The average daily maximum UV index in December in Flamengo is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Flamengo, Brazil
- Average high temperature in December: 28.2°C
The warmest month (with the highest average high temperature) is February (29.7°C).
The month with the lowest average high temperature is July (24°C).
- Average low temperature in December: 23°C
The month with the highest average low temperature is January (23.7°C).
The coldest month (with the lowest average low temperature) is August (18.5°C).
Average pressure in December
Flamengo, Brazil
- Average pressure in December: 1011.9mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in December
Flamengo, Brazil
- Average wind speed in December: 9.5km/h
The windiest months (with the highest average wind speed) are August and September (11.3km/h).
The calmest month (with the lowest average wind speed) is March (8.7km/h).
Average humidity in December
Flamengo, Brazil
- Average humidity in December: 81%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Flamengo, Brazil
- Average rainfall in December: 98mm
The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is June (29mm).
Average rainfall days in December
Flamengo, Brazil
- Average rainfall days in December: 21.9 days
The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is July (9.3 days).
Average daylight in December /
Average sunshine in December
Flamengo, Brazil
- Average daylight in December: 13h and 30min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in December: 8h and 18min
The month with the most sunshine is February (Average sunshine: 8h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in December
Flamengo, Brazil
- Average sunshine days in December: 4.8 days
The month with the most sunshine days is July (20.6 days).
The month with the least sunshine days is December (4.8 days).
Average UV index in December
Flamengo, Brazil
- Average UV index in December: 6
The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in December
Flamengo, Brazil
- Average cloud cover in December: 39
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 28).
Average visibility in December
Flamengo, Brazil
- Average visibility in December: 9km
The months with the highest visibility are February, May, June, July, August and September (10km).
The months with the lowest visibility are January, March, April, October, November and December (9km).
