December weather forecastMonteiro, Brazil
December
Weather in December
The first month of the summer, December, is also a hot month in Monteiro, Brazil, with an average temperature fluctuating between 19.7°C (67.5°F) and 31.3°C (88.3°F).Temperature
December denotes a minimal variation in the average high-temperature to a still tropical 31.3°C (88.3°F) from November's 31.6°C (88.9°F). Throughout December, Monteiro registers a consistent average low-temperature of 19.7°C (67.5°F).Heat index
For December, the heat index is estimated at a sweltering 36°C (96.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Note that heat index values are valued for light wind and location in the shade. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
The months with the lowest humidity are November and December, with an average relative humidity of 62%.Rainfall
In Monteiro, in December, it is raining for 10.9 days, with typically 26mm (1.02") of accumulated precipitation. In Monteiro, Brazil, during the entire year, the rain falls for 140.9 days and collects up to 430mm (16.93") of precipitation.Daylight
With an average of 12h and 36min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 05:01 and sunset at 17:34. On the last day of December, sunrise is at 05:14 and sunset at 17:48 -03.
Sunshine
In Monteiro, the average sunshine in December is 9.2h.UV index
In Monteiro, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Monteiro, Brazil
- Average high temperature in December: 31.3°C
The warmest month (with the highest average high temperature) is November (31.6°C).
The month with the lowest average high temperature is July (26°C).
- Average low temperature in December: 19.7°C
The month with the highest average low temperature is March (19.9°C).
The coldest month (with the lowest average low temperature) is August (16.3°C).
Average pressure in December
Monteiro, Brazil
- Average pressure in December: 1011.9mbar
The months with the highest atmospheric pressure are July and August (1016.8mbar).
The month with the lowest atmospheric pressure is November (1011.7mbar).
Average wind speed in December
Monteiro, Brazil
- Average wind speed in December: 16.5km/h
The windiest month (with the highest average wind speed) is October (18.2km/h).
The calmest month (with the lowest average wind speed) is April (12km/h).
Average humidity in December
Monteiro, Brazil
- Average humidity in December: 62%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are November and December (62%).
Average rainfall in December
Monteiro, Brazil
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is March (104mm).
The driest month (with the least rainfall) is September (4mm).
Average rainfall days in December
Monteiro, Brazil
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is April (18.3 days).
The month with the least rainy days is September (5.2 days).
Average daylight in December /
Average sunshine in December
Monteiro, Brazil
- Average daylight in December: 12h and 36min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in December: 9h and 12min
The month with the most sunshine is November (Average sunshine: 9h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 30min).
Average sunshine days in December
Monteiro, Brazil
- Average sunshine days in December: 17.9 days
The months with the most sunshine days are September and October (20.9 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in December
Monteiro, Brazil
- Average UV index in December: 6
The months with the highest UV index are February and November (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in December
Monteiro, Brazil
- Average cloud cover in December: 28
The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is November (Cloud cover 24).
Average visibility in December
Monteiro, Brazil
- Average visibility in December: 10km
The months with the highest visibility are January, February, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (8km).
