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 average high-temperature stands at a tropical 30.1°C (86.2°F), showing little deviation from November's 27.5°C (81.5°F). Dona Francisca's temperature in December declines substantially from daytime highs, settling at a consistent average of 18°C (64.4°F) during the nights.Heat index
The heat index in December is evaluated at a torrid 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
With an average relative humidity of 70%, December is the least humid month.Rainfall
In December, the rain falls for 14.2 days. Throughout December, 78mm (3.07") of precipitation is accumulated. Throughout the year, there are 146.4 rainfall days, and 974mm (38.35") of precipitation is accumulated.Daylight
December has the longest days of the year, with an average of 14h and 0min of daylight.On the first day of December, sunrise is at 05:25 and sunset at 19:20. On the last day of the month, sunrise is at 05:36 and sunset at 19:37 -03.
Sunshine
The month with the most sunshine is December, with an average of 8.7h of sunshine.UV index
The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 6 in December leads to these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during 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?
What is the average length of the day in December?
When are sunrise and sunset in December?
What month has the most sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Dona Francisca, Brazil
- Average high temperature in December: 30.1°C
The warmest months (with the highest average high temperature) are January and February (30.7°C).
The month with the lowest average high temperature is July (18.1°C).
- Average low temperature in December: 18°C
The month with the highest average low temperature is January (19°C).
The coldest month (with the lowest average low temperature) is July (8.9°C).
Average pressure in December
Dona Francisca, Brazil
- Average pressure in December: 1010.4mbar
The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1010.4mbar).
Average wind speed in December
Dona Francisca, Brazil
- Average wind speed in December: 12.6km/h
The windiest months (with the highest average wind speed) are September and October (13.4km/h).
The calmest month (with the lowest average wind speed) is April (11km/h).
Average humidity in December
Dona Francisca, Brazil
- Average humidity in December: 70%
The months with the highest relative humidity are May and June (83%).
The month with the lowest relative humidity is December (70%).
Average rainfall in December
Dona Francisca, Brazil
- Average rainfall in December: 78mm
The wettest month (with the highest rainfall) is October (128mm).
The driest month (with the least rainfall) is March (55mm).
Average rainfall days in December
Dona Francisca, Brazil
- Average rainfall days in December: 14.2 days
The month with the highest number of rainy days is January (14.3 days).
The month with the least rainy days is April (10.8 days).
Average daylight in December /
Average sunshine in December
Dona Francisca, Brazil
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 8h and 4min
The month with the most sunshine is December (Average sunshine: 8h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in December
Dona Francisca, Brazil
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is March (18.9 days).
The month with the least sunshine days is February (14.1 days).
Average UV index in December
Dona Francisca, Brazil
- Average UV index in December: 6
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in December
Dona Francisca, Brazil
- Average cloud cover in December: 30
The month with the most cloud cover is May (Cloud cover 39).
The month with the least cloud cover is November (Cloud cover 29).
Average visibility in December
Dona Francisca, Brazil
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
