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 notes an average high-temperature of a still warm 28.2°C (82.8°F), subtly differing from November's 26.4°C (79.5°F). Cosme Velho records a steady low-temperature average of 23°C (73.4°F) during December.Heat index
The heat index in December is appraised at a tropical 33°C (91.4°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Cosme Velho, the average relative humidity in December is 81%.Rainfall
In December, in Cosme Velho, the rain falls for 21.9 days. Throughout December, 98mm (3.86") of precipitation is accumulated. In Cosme Velho, during the entire year, the rain falls for 192.5 days and collects up to 812mm (31.97") of precipitation.Daylight
December has the longest days of the year in Cosme Velho, with an average of 13h and 30min of daylight.On the first day of December, sunrise is at 04:58 and sunset at 18:25. On the last day of the month, sunrise is at 05:10 and sunset at 18:41 -03.
Sunshine
In December, the average sunshine is 8.3h.UV index
The average daily maximum UV index in December in Cosme Velho is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 during December translates into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Cosme Velho in December?
What is the average humidity in December in Cosme Velho?
How much does it rain in Cosme Velho in December?
When are the longest days in Cosme Velho?
How many hours of daylight does Cosme Velho have in December?
When is the sunrise / sunset in December in Cosme Velho?
How long on average sun shines in December in Cosme Velho?
What is the UV index reading in December in Cosme Velho?
Average temperature in December
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, Brazil
- Average daylight in December: 13h and 3min
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 2min
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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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
Cosme Velho, 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).
