December weather forecastDesterro, Brazil
December
Weather in December
The first month of the summer, December, is still a tropical month in Desterro, Brazil, with an average temperature ranging between max 33.8°C (92.8°F) and min 22.5°C (72.5°F).Temperature
The arrival of December is marked by an average high-temperature of a still hot 33.8°C (92.8°F), bearing a close resemblance to November. December's nights in Desterro observe an average temperature of 22.5°C (72.5°F).Heat index
For December, the heat index is estimated at a scorching 40°C (104°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in December is 55%.Rainfall
In Desterro, in December, it is raining for 9.6 days, with typically 22mm (0.87") of accumulated precipitation. In Desterro, Brazil, during the entire year, the rain falls for 126.4 days and collects up to 401mm (15.79") of precipitation.Daylight
The month with the longest days in Desterro is December, with an average of 12h and 30min of daylight.On the first day of December in Desterro, sunrise is at 05:02 and sunset at 17:33. On the last day of the month, sunrise is at 05:15 and sunset at 17:47 -03.
Sunshine
The average sunshine in December is 9.3h.UV index
The months with the highest UV index are January through March, August through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 7 during December, leads to the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Desterro, Brazil
- Average high temperature in December: 33.8°C
The warmest month (with the highest average high temperature) is November (34.4°C).
The month with the lowest average high temperature is July (30.3°C).
- Average low temperature in December: 22.5°C
The month with the highest average low temperature is January (22.7°C).
The coldest months (with the lowest average low temperature) are July and August (19.3°C).
Average pressure in December
Desterro, Brazil
- Average pressure in December: 1011.3mbar
The month with the highest atmospheric pressure is July (1015.8mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in December
Desterro, Brazil
- Average wind speed in December: 18.6km/h
The windiest month (with the highest average wind speed) is September (22.4km/h).
The calmest months (with the lowest average wind speed) are March and April (13.1km/h).
Average humidity in December
Desterro, Brazil
- Average humidity in December: 55%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is November (53%).
Average rainfall in December
Desterro, Brazil
- Average rainfall in December: 22mm
The wettest month (with the highest rainfall) is March (97mm).
The driest months (with the least rainfall) are August and September (1mm).
Average rainfall days in December
Desterro, Brazil
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is September (1.2 days).
Average daylight in December /
Average sunshine in December
Desterro, Brazil
- Average daylight in December: 12h and 30min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in December: 9h and 18min
The month with the most sunshine is September (Average sunshine: 9h and 54min).
The months with the least sunshine are March, April and May (Average sunshine: 8h and 54min).
Average sunshine days in December
Desterro, Brazil
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is September (28.8 days).
The month with the least sunshine days is April (8.8 days).
Average UV index in December
Desterro, Brazil
- Average UV index in December: 7
The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 7).
The months with the lowest UV index are April, May, June and July (UV index 6).
Average cloud cover in December
Desterro, Brazil
- Average cloud cover in December: 25
The months with the most cloud cover are March and April (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 13).
Average visibility in December
Desterro, Brazil
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is April (9km).
