December weather forecastPires do Rio, Brazil
December
Weather in December
December, the first month of the summer in Pires do Rio, is still a warm month, with an average temperature varying between 19.5°C (67.1°F) and 27.7°C (81.9°F).Temperature
With December's arrival, Pires do Rio notes an average high-temperature of a still moderately hot 27.7°C (81.9°F), closely following the trend of the preceding month. During December, Pires do Rio witnesses a consistent average low-temperature of 19.5°C (67.1°F).Heat index
In December, the heat index is computed to be a hot 32°C (89.6°F). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are primarily vital 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.
Humidity
In Pires do Rio, Brazil, the average relative humidity in December is 86%.Rainfall
December is the month with the most rainfall in Pires do Rio. Rain falls for 30.3 days and accumulates 284mm (11.18") of precipitation.Daylight
With an average of 13h and 6min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 05:29 and sunset at 18:35. On the last day of the month, sunrise is at 05:42 and sunset at 18:50 -03.
Sunshine
The average sunshine in December is 7.4h.UV index
The months with the lowest UV index in Pires do Rio are February through June, November and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pires do Rio, Brazil
- Average high temperature in December: 27.7°C
The warmest month (with the highest average high temperature) is September (31.8°C).
The month with the lowest average high temperature is June (25.4°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is October (19.7°C).
The coldest month (with the lowest average low temperature) is July (14.8°C).
Average pressure in December
Pires do Rio, Brazil
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is July (1018.7mbar).
The month with the lowest atmospheric pressure is November (1011.3mbar).
Average wind speed in December
Pires do Rio, Brazil
- Average wind speed in December: 7.1km/h
The windiest month (with the highest average wind speed) is August (10km/h).
The calmest month (with the lowest average wind speed) is March (6.4km/h).
Average humidity in December
Pires do Rio, Brazil
- Average humidity in December: 86%
The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is September (46%).
Average rainfall in December
Pires do Rio, Brazil
- Average rainfall in December: 284mm
The wettest month (with the highest rainfall) is December (284mm).
The driest month (with the least rainfall) is August (4mm).
Average rainfall days in December
Pires do Rio, Brazil
- Average rainfall days in December: 30.3 days
The month with the highest number of rainy days is December (30.3 days).
The month with the least rainy days is August (2.9 days).
Average daylight in December /
Average sunshine in December
Pires do Rio, Brazil
- Average daylight in December: 13h and 6min
The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in December: 7h and 24min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is March (Average sunshine: 7h and 18min).
Average sunshine days in December
Pires do Rio, Brazil
- Average sunshine days in December: 0.5 days
The month with the most sunshine days is August (27.6 days).
The month with the least sunshine days is December (0.5 days).
Average UV index in December
Pires do Rio, Brazil
- Average UV index in December: 5
The months with the highest UV index are January, July, August, September and October (UV index 6).
The months with the lowest UV index are February, March, April, May, June, November and December (UV index 5).
Average cloud cover in December
Pires do Rio, Brazil
- Average cloud cover in December: 55
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Pires do Rio, Brazil
- Average visibility in December: 7km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April and December (7km).
