Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's arrival registers an average high-temperature of a still moderately hot 27.4°C (81.3°F), closely aligning with the temperature of the previous month. Três Rios encounters an average low-temperature of 18.7°C (65.7°F) during December nights.Heat index
Throughout December, the heat index is computed to be a tropical 32°C (89.6°F). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.Know that the heat index computations account for shaded terrains and slight winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In Três Rios, the average relative humidity in December is 87%.Rainfall
December is the month with the most rainfall. Rain falls for 27.6 days and accumulates 203mm (7.99") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 30min of daylight.On the first day of the month, sunrise is at 05:00 and sunset at 18:23. On the last day of December, in Três Rios, sunrise is at 05:12 and sunset at 18:40 -03.
Sunshine
In December, the average sunshine is 7.2h.UV index
The months with the highest UV index are January, October and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 6 in December translates into this advice:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the usual temperature for Três Rios in December?
What is the average humidity in December in Três Rios?
What is the wettest month in Três Rios?
How much does it rain in Três Rios in December?
When are the longest days in Três Rios?
What is the average length of the day in December in Três Rios?
When is the sunrise / sunset in December in Três Rios?
How long on average sun shines in December in Três Rios?
When is the highest UV index in Três Rios?
How high is the UV index in December in Três Rios?
Average temperature in December
Três Rios, Brazil
- Average high temperature in December: 27.4°C
The warmest months (with the highest average high temperature) are January and February (27.8°C).
The month with the lowest average high temperature is June (22.6°C).
- Average low temperature in December: 18.7°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (12.8°C).
Average pressure in December
Três Rios, Brazil
- Average pressure in December: 1012.4mbar
The month with the highest atmospheric pressure is July (1020.8mbar).
The month with the lowest atmospheric pressure is December (1012.4mbar).
Average wind speed in December
Três Rios, Brazil
- Average wind speed in December: 5.9km/h
The windiest month (with the highest average wind speed) is October (7km/h).
The calmest month (with the lowest average wind speed) is March (5km/h).
Average humidity in December
Três Rios, Brazil
- Average humidity in December: 87%
The months with the highest relative humidity are March and April (89%).
The month with the lowest relative humidity is September (77%).
Average rainfall in December
Três Rios, Brazil
- Average rainfall in December: 203mm
The wettest month (with the highest rainfall) is December (203mm).
The driest month (with the least rainfall) is July (17mm).
Average rainfall days in December
Três Rios, Brazil
- Average rainfall days in December: 27.6 days
The month with the highest number of rainy days is December (27.6 days).
The month with the least rainy days is August (9.2 days).
Average daylight in December /
Average sunshine in December
Três Rios, Brazil
- Average daylight in December: 13h and 3min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in December: 7h and 1min
The month with the most sunshine is July (Average sunshine: 8h and 18min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).
Average sunshine days in December
Três Rios, Brazil
- Average sunshine days in December: 1 days
The month with the most sunshine days is August (18.4 days).
The month with the least sunshine days is December (1 days).
Average UV index in December
Três Rios, Brazil
- Average UV index in December: 6
The months with the highest UV index are January, October and December (UV index 6).
The months with the lowest UV index are February, March, April, May, June, July, August, September and November (UV index 5).
Average cloud cover in December
Três Rios, Brazil
- Average cloud cover in December: 56
The months with the most cloud cover are March and November (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Três Rios, Brazil
- Average visibility in December: 7km
The months with the highest visibility are August, September and October (8km).
The months with the lowest visibility are March, April and May (6km).
Três Rios, Brazil
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