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
December's arrival brings an average high-temperature of a still tropical 33.3°C (91.9°F), slightly deviating from November's 33.8°C (92.8°F). During December, Santana de Mangueira consistently records a temperature low averaging a pleasant 22.1°C (71.8°F).Heat index
December's average heat index is estimated at a sweltering 38°C (100.4°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level 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. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The average relative humidity in December is 53%.Rainfall
In December, the rain falls for 11.7 days. Throughout December, 37mm (1.46") of precipitation is accumulated. In Santana de Mangueira, during the entire year, the rain falls for 140.8 days and collects up to 430mm (16.93") of precipitation.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 05:06 and sunset at 17:38. On the last day of December, sunrise is at 05:19 and sunset at 17:53 -03.
Sunshine
In December, the average sunshine is 9.1h.UV index
The months with the highest UV index are February, March, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 7 during December leads to these advisories:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in December?
What is the average humidity in December?
How many days does it rain in December?
When are the longest days?
How many hours of daylight does Santana de Mangueira have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What is the month with the highest UV index?
What is the UV index reading in December?
Average temperature in December
Santana de Mangueira, Brazil
- Average high temperature in December: 33.3°C
The warmest month (with the highest average high temperature) is November (33.8°C).
The month with the lowest average high temperature is July (28.1°C).
- Average low temperature in December: 22.1°C
The month with the highest average low temperature is November (22.3°C).
The coldest months (with the lowest average low temperature) are July and August (17.3°C).
Average pressure in December
Santana de Mangueira, Brazil
- Average pressure in December: 1011.1mbar
The month with the highest atmospheric pressure is July (1016.3mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).
Average wind speed in December
Santana de Mangueira, Brazil
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is September (18.4km/h).
The calmest month (with the lowest average wind speed) is March (10.6km/h).
Average humidity in December
Santana de Mangueira, Brazil
- Average humidity in December: 53%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is November (49%).
Average rainfall in December
Santana de Mangueira, Brazil
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is March (88mm).
The driest month (with the least rainfall) is September (1mm).
Average rainfall days in December
Santana de Mangueira, Brazil
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is September (2.5 days).
Average daylight in December /
Average sunshine in December
Santana de Mangueira, 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: 9h and 1min
The month with the most sunshine is October (Average sunshine: 9h and 24min).
The month with the least sunshine is July (Average sunshine: 7h and 0min).
Average sunshine days in December
Santana de Mangueira, Brazil
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is September (25.6 days).
The month with the least sunshine days is February (8 days).
Average UV index in December
Santana de Mangueira, Brazil
- Average UV index in December: 7
The months with the highest UV index are February, March, September, October, November and December (UV index 7).
The months with the lowest UV index are January, April, May, June, July and August (UV index 6).
Average cloud cover in December
Santana de Mangueira, Brazil
- Average cloud cover in December: 30
The month with the most cloud cover is July (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 24).
Average visibility in December
Santana de Mangueira, Brazil
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The month with the lowest visibility is May (8km).
