December weather forecastOiapoque, Brazil
December
Weather in December
The first month of the winter, December, is still a warm month in Oiapoque, Brazil, with an average temperature varying between 29.8°C (85.6°F) and 22°C (71.6°F).Temperature
December signifies a minor drop in average high-temperature, transitioning from a hot 33°C (91.4°F) in November to a warm 29.8°C (85.6°F). In Oiapoque, the expected average low-temperature for December is a pleasant 22°C (71.6°F).Heat index
The heat index in December is calculated to be a sweltering 39°C (102.2°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
The average relative humidity in December is 86%.Rainfall
In Oiapoque, in December, during 25.1 rainfall days, 146mm (5.75") of precipitation is typically accumulated. In Oiapoque, during the entire year, the rain falls for 270.6 days and collects up to 1131mm (44.53") of precipitation.Daylight
With an average of 11h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:19 and sunset at 18:14. On the last day of December, sunrise is at 06:33 and sunset at 18:27 -03.
Sunshine
The average sunshine in December is 5.9h.UV index
The months with the lowest UV index are January through July, November and 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 average individuals.Note: A daily high UV index of 6 in December leads to these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Oiapoque, Brazil
- Average high temperature in December: 29.8°C
The warmest month (with the highest average high temperature) is October (34.3°C).
The month with the lowest average high temperature is February (27.9°C).
- Average low temperature in December: 22°C
The month with the highest average low temperature is April (22.4°C).
The coldest month (with the lowest average low temperature) is July (21.3°C).
Average pressure in December
Oiapoque, Brazil
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in December
Oiapoque, Brazil
- Average wind speed in December: 5.6km/h
The windiest month (with the highest average wind speed) is October (6.1km/h).
The calmest month (with the lowest average wind speed) is June (4.2km/h).
Average humidity in December
Oiapoque, Brazil
- Average humidity in December: 86%
The month with the highest relative humidity is May (91%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Oiapoque, Brazil
- Average rainfall in December: 146mm
The wettest month (with the highest rainfall) is May (195mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in December
Oiapoque, Brazil
- Average rainfall days in December: 25.1 days
The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (12 days).
Average daylight in December /
Average sunshine in December
Oiapoque, Brazil
- Average daylight in December: 11h and 54min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in December: 5h and 54min
The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Oiapoque, Brazil
- Average sunshine days in December: 4.5 days
The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is May (1.8 days).
Average UV index in December
Oiapoque, Brazil
- Average UV index in December: 6
The months with the highest UV index are August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, November and December (UV index 6).
Average cloud cover in December
Oiapoque, Brazil
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is October (Cloud cover 46).
Average visibility in December
Oiapoque, Brazil
- Average visibility in December: 6km
The months with the highest visibility are September and October (7km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, November and December (6km).
