Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The introduction of December notes a subtle temperature variation to a still tropical 30.5°C (86.9°F) from November's 30.1°C (86.2°F). The average temperature during December nights dips to a pleasant 22.9°C (73.2°F).Heat index
In December, the average heat index is computed to be a torrid 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.For clarity, heat index numbers account for light winds and areas under shade. In the presence of direct sunshine, the heat index could be augmented 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. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
The months with the lowest humidity are November and December, with an average relative humidity of 73%.Rainfall
In Nazaré da Mata, in December, during 20.6 rainfall days, 24mm (0.94") of precipitation is typically accumulated. Throughout the year, there are 263 rainfall days, and 463mm (18.23") of precipitation is accumulated.Daylight
The month with the longest days is December, with an average of 12h and 36min of daylight.On the first day of the month, sunrise is at 04:53 and sunset at 17:26. On the last day of December, sunrise is at 05:07 and sunset at 17:41 -03.
Sunshine
In December, the average sunshine is 7.4h.UV index
January through March, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 7 in December leads to these recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in December?
What is the least humid month?
What is the average humidity in December?
How much does it rain in December?
When are the longest days?
How many hours of daylight does Nazaré da Mata have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Nazaré da Mata have in December?
What are the months with the highest UV index?
What is the UV index reading in December?
Average temperature in December
Nazaré da Mata, Brazil
- Average high temperature in December: 30.5°C
The warmest month (with the highest average high temperature) is March (31.2°C).
The month with the lowest average high temperature is July (26.8°C).
- Average low temperature in December: 22.9°C
The month with the highest average low temperature is March (23.4°C).
The coldest month (with the lowest average low temperature) is August (20.1°C).
Average pressure in December
Nazaré da Mata, Brazil
- Average pressure in December: 1012.3mbar
The month with the highest atmospheric pressure is August (1016.4mbar).
The months with the lowest atmospheric pressure are February and March (1012mbar).
Average wind speed in December
Nazaré da Mata, Brazil
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is September (12.3km/h).
The calmest month (with the lowest average wind speed) is April (9km/h).
Average humidity in December
Nazaré da Mata, Brazil
- Average humidity in December: 73%
The months with the highest relative humidity are June and July (85%).
The months with the lowest relative humidity are November and December (73%).
Average rainfall in December
Nazaré da Mata, Brazil
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is July (64mm).
The driest month (with the least rainfall) is November (15mm).
Average rainfall days in December
Nazaré da Mata, Brazil
- Average rainfall days in December: 20.6 days
The month with the highest number of rainy days is July (26.4 days).
The month with the least rainy days is November (18.4 days).
Average daylight in December /
Average sunshine in December
Nazaré da Mata, Brazil
- Average daylight in December: 12h and 4min
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: 7h and 2min
The month with the most sunshine is March (Average sunshine: 7h and 42min).
The month with the least sunshine is July (Average sunshine: 6h and 18min).
Average sunshine days in December
Nazaré da Mata, Brazil
- Average sunshine days in December: 4.5 days
The month with the most sunshine days is March (6.3 days).
The months with the least sunshine days are July and September (1.7 days).
Average UV index in December
Nazaré da Mata, Brazil
- Average UV index in December: 7
The months with the highest UV index are January, February, March, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in December
Nazaré da Mata, Brazil
- Average cloud cover in December: 44
The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is March (Cloud cover 42).
Average visibility in December
Nazaré da Mata, Brazil
- Average visibility in December: 10km
The months with the highest visibility are January, February, October, November and December (10km).
The months with the lowest visibility are May, June and July (8km).
