December weather forecastBarra do Rocha, Brazil
December
Weather in December
December, the first month of the summer in Barra do Rocha, is a hot month, with an average temperature ranging between max 30.4°C (86.7°F) and min 19.5°C (67.1°F).Temperature
Barra do Rocha's shift into December sets the average high-temperature at a tropical 30.4°C (86.7°F), a figure that deviates only slightly from November's 29.1°C (84.4°F). Barra do Rocha encounters an average low-temperature of 19.5°C (67.1°F) during December nights.Heat index
December's heat index is computed to be a scorching 40°C (104°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Realize that the values for the heat index are set for shaded places and light winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. 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 essentially critical for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in December is 82%.Rainfall
In Barra do Rocha, in December, during 19 rainfall days, 55mm (2.17") of precipitation is typically accumulated. Throughout the year, there are 241.8 rainfall days, and 524mm (20.63") of precipitation is accumulated.Daylight
With an average of 13h and 0min 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 17:54. On the last day of December, sunrise is at 05:13 and sunset at 18:10 -03.
Sunshine
The average sunshine in December is 7.5h.UV index
The months with the highest UV index are January through May, September through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 6 during December translates into the following directions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Barra do Rocha, Brazil
- Average high temperature in December: 30.4°C
The warmest months (with the highest average high temperature) are February and March (30.8°C).
The month with the lowest average high temperature is July (25.6°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is March (19.8°C).
The coldest month (with the lowest average low temperature) is August (16.3°C).
Average pressure in December
Barra do Rocha, Brazil
- Average pressure in December: 1013mbar
The month with the highest atmospheric pressure is July (1019.4mbar).
The month with the lowest atmospheric pressure is December (1013mbar).
Average wind speed in December
Barra do Rocha, Brazil
- Average wind speed in December: 6.7km/h
The windiest month (with the highest average wind speed) is October (7.3km/h).
The calmest month (with the lowest average wind speed) is April (6km/h).
Average humidity in December
Barra do Rocha, Brazil
- Average humidity in December: 82%
The months with the highest relative humidity are June and July (87%).
The month with the lowest relative humidity is February (81%).
Average rainfall in December
Barra do Rocha, Brazil
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is March (69mm).
The driest month (with the least rainfall) is September (27mm).
Average rainfall days in December
Barra do Rocha, Brazil
- Average rainfall days in December: 19 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is February (16.2 days).
Average daylight in December /
Average sunshine in December
Barra do Rocha, 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 30min
The months with the most sunshine are January and February (Average sunshine: 8h and 6min).
The months with the least sunshine are June and July (Average sunshine: 4h and 42min).
Average sunshine days in December
Barra do Rocha, Brazil
- Average sunshine days in December: 7.7 days
The month with the most sunshine days is January (8.3 days).
The month with the least sunshine days is July (4.3 days).
Average UV index in December
Barra do Rocha, Brazil
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, September, October, November and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 5).
Average cloud cover in December
Barra do Rocha, Brazil
- Average cloud cover in December: 65
The months with the most cloud cover are May, June and July (Cloud cover 72).
The months with the least cloud cover are January and February (Cloud cover 63).
Average visibility in December
Barra do Rocha, Brazil
- Average visibility in December: 6km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6km).
The month with the lowest visibility is July (5km).
