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 reports an average high-temperature of a still warm 28.7°C (83.7°F), slightly varied from November's 29°C (84.2°F). The average low-temperature, in December, is an agreeable 20.5°C (68.9°F).Heat index
December's heat index is evaluated at a hot 34°C (93.2°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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.
Humidity
In December, the average relative humidity is 82%.Rainfall
In December, in Fernando Prestes, the rain falls for 29.5 days. Throughout December, 212mm (8.35") of precipitation is accumulated. Throughout the year, there are 217.6 rainfall days, and 1401mm (55.16") of precipitation is accumulated.Daylight
With an average of 13h and 24min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 05:23 and sunset at 18:44. On the last day of the month, sunrise is at 05:35 and sunset at 19:00 -03.
Sunshine
In December, the average sunshine is 7.4h.UV index
February through June, November and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 5 in December transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is December?
What is the average humidity in December?
How many days does it rain in December?
When are the longest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Fernando Prestes have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Fernando Prestes, Brazil
- Average high temperature in December: 28.7°C
The warmest month (with the highest average high temperature) is September (30.6°C).
The month with the lowest average high temperature is June (24°C).
- Average low temperature in December: 20.5°C
The month with the highest average low temperature is December (20.5°C).
The coldest month (with the lowest average low temperature) is June (14.8°C).
Average pressure in December
Fernando Prestes, Brazil
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is July (1018.7mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).
Average wind speed in December
Fernando Prestes, Brazil
- Average wind speed in December: 8.3km/h
The windiest month (with the highest average wind speed) is August (10.5km/h).
The calmest month (with the lowest average wind speed) is February (7.4km/h).
Average humidity in December
Fernando Prestes, Brazil
- Average humidity in December: 82%
The month with the highest relative humidity is March (87%).
The months with the lowest relative humidity are August and September (55%).
Average rainfall in December
Fernando Prestes, Brazil
- Average rainfall in December: 212mm
The wettest month (with the highest rainfall) is January (259mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in December
Fernando Prestes, Brazil
- Average rainfall days in December: 29.5 days
The months with the highest number of rainy days are January and December (29.5 days).
The month with the least rainy days is August (3.8 days).
Average daylight in December /
Average sunshine in December
Fernando Prestes, Brazil
- Average daylight in December: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in December: 7h and 2min
The months with the most sunshine are August and September (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).
Average sunshine days in December
Fernando Prestes, Brazil
- Average sunshine days in December: 1.1 days
The month with the most sunshine days is August (26.6 days).
The months with the least sunshine days are February and December (1.1 days).
Average UV index in December
Fernando Prestes, Brazil
- Average UV index in December: 5
The months with the highest UV index are January, July, August, September and October (UV index 6).
The months with the lowest UV index are February, March, April, May, June, November and December (UV index 5).
Average cloud cover in December
Fernando Prestes, Brazil
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Fernando Prestes, Brazil
- Average visibility in December: 8km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January and March (7km).
