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 experiences an average high-temperature of a still tropical 31.3°C (88.3°F), barely different from November's 31.6°C (88.9°F). December nights are marked by an average temperature drop to a comfortable 19.7°C (67.5°F).Heat index
December's heat index is appraised at a torrid 36°C (96.8°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. 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.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The months with the lowest humidity in São Sebastião do Umbuzeiro are November and December, with an average relative humidity of 62%.Rainfall
In São Sebastião do Umbuzeiro, during December, the rain falls for 10.9 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, in São Sebastião do Umbuzeiro, there are 140.9 rainfall days, and 430mm (16.93") of precipitation is accumulated.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 05:00 and sunset at 17:34. On the last day of December, in São Sebastião do Umbuzeiro, sunrise is at 05:13 and sunset at 17:49 -03.
Sunshine
In December, the average sunshine is 9.2h.UV index
In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 6 in December transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in São Sebastião do Umbuzeiro in December?
What are the least humid months in São Sebastião do Umbuzeiro?
What is the average humidity in December in São Sebastião do Umbuzeiro?
How much does it rain in São Sebastião do Umbuzeiro in December?
When are the longest days in São Sebastião do Umbuzeiro?
What is the average length of the day in December in São Sebastião do Umbuzeiro?
What time are sunrise and sunset in December in São Sebastião do Umbuzeiro?
How many hours of sunshine does São Sebastião do Umbuzeiro have in December?
What is the UV index reading in December in São Sebastião do Umbuzeiro?
Average temperature in December
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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 November (Average sunshine: 9h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 30min).
Average sunshine days in December
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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
São Sebastião do Umbuzeiro, 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).
