December weather forecastFormoso, Brazil
December
Weather in December
The first month of the summer, December, is also a moderately hot month in Formoso, Brazil, with an average temperature varying between 20°C (68°F) and 28.4°C (83.1°F).Temperature
December's weather displays an average high-temperature of a still moderately hot 28.4°C (83.1°F), slightly varied from November's 28.5°C (83.3°F). Formoso, during the nights of December, experiences an average temperature drop to an agreeable 20°C (68°F).Heat index
For December, the heat index is estimated at a hot 33°C (91.4°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in 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. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
In Formoso, the average relative humidity in December is 82%.Rainfall
In December, the rain falls for 25.1 days. Throughout December, 155mm (6.1") of precipitation is accumulated. In Formoso, during the entire year, the rain falls for 182.2 days and collects up to 1008mm (39.69") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 0min of daylight.On the first day of the month, sunrise is at 05:25 and sunset at 18:22. On the last day of December, in Formoso, Brazil, sunrise is at 05:38 and sunset at 18:38 -03.
Sunshine
The average sunshine in December is 7.9h.UV index
The months with the lowest UV index are January through July, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. 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
Average temperature in December
Formoso, Brazil
- Average high temperature in December: 28.4°C
The warmest month (with the highest average high temperature) is September (32.6°C).
The month with the lowest average high temperature is May (26.6°C).
- Average low temperature in December: 20°C
The month with the highest average low temperature is October (20.9°C).
The coldest month (with the lowest average low temperature) is July (14.9°C).
Average pressure in December
Formoso, Brazil
- Average pressure in December: 1011.7mbar
The month with the highest atmospheric pressure is July (1018.4mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).
Average wind speed in December
Formoso, Brazil
- Average wind speed in December: 6.2km/h
The windiest month (with the highest average wind speed) is September (8.5km/h).
The calmest month (with the lowest average wind speed) is March (5.5km/h).
Average humidity in December
Formoso, Brazil
- Average humidity in December: 82%
The months with the highest relative humidity are March and April (84%).
The month with the lowest relative humidity is September (43%).
Average rainfall in December
Formoso, Brazil
- Average rainfall in December: 155mm
The wettest month (with the highest rainfall) is November (188mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in December
Formoso, Brazil
- Average rainfall days in December: 25.1 days
The month with the highest number of rainy days is March (26.1 days).
The month with the least rainy days is August (1.3 days).
Average daylight in December /
Average sunshine in December
Formoso, Brazil
- Average daylight in December: 13h and 0min
The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in December: 7h and 54min
The month with the most sunshine is September (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in December
Formoso, Brazil
- Average sunshine days in December: 5 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is November (3.6 days).
Average UV index in December
Formoso, Brazil
- Average UV index in December: 6
The months with the highest UV index are August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, October, November and December (UV index 6).
Average cloud cover in December
Formoso, Brazil
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Formoso, 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, February, March, April, May, November and December (8km).
