December weather forecastSério, Brazil

December

Weather in December

December, the first month of the summer in Sério, is also a moderately hot month, with an average temperature ranging between max 29.1°C (84.4°F) and min 17.5°C (63.5°F).

Temperature

The arrival of December sees a recorded average high-temperature of a still moderately hot 29.1°C (84.4°F), showing little divergence from the previous month's conditions. During December, Sério consistently records a temperature low averaging a comfortable 17.5°C (63.5°F).

Heat index

December's heat index is computed to be a hot 34°C (93.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The least humid month is December, with an average relative humidity of 76%.

Rainfall

In Sério, during December, the rain falls for 14.5 days and regularly aggregates up to 54mm (2.13") of precipitation. Throughout the year, there are 148.9 rainfall days, and 783mm (30.83") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 14h and 0min of daylight.
On the first day of December, sunrise is at 05:21 and sunset at 19:15. On the last day of the month, sunrise is at 05:32 and sunset at 19:32 -03.

Sunshine

December has the most sunshine of the year, with an average of 8.5h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

The average high-temperature, in December, in Sério, is 29.1°C (84.4°F), while the average low-temperature is 17.5°C (63.5°F). In December, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 34°C (93.2°F).

December is the least humid month, with an average relative humidity of 76%.

The average relative humidity in December is 76%.

In December, the rain falls for 14.5 days. Throughout December, 54mm (2.13") of precipitation is accumulated.

The month with the longest days is December, with an average of 14h and 0min of daylight.

In December, the average day length is 13h and 59min.

On the first day of December, sunrise is at 05:21 and sunset at 19:15. On the last day of the month, sunrise is at 05:32 and sunset at 19:32 -03.

The month with the most sunshine is December, with an average of 8.5h of sunshine.

The average sunshine duration in December is 8.5h.

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6.

In December, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sério, Brazil

  • Average high temperature in December: 29.1°C

The warmest month (with the highest average high temperature) is February (29.5°C).
The month with the lowest average high temperature is July (18°C).

  • Average low temperature in December: 17.5°C

The month with the highest average low temperature is February (18.6°C).
The coldest month (with the lowest average low temperature) is July (9.2°C).

Average pressure in December
Sério, Brazil

  • Average pressure in December: 1011.2mbar

The month with the highest atmospheric pressure is July (1019.9mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

Average wind speed in December
Sério, Brazil

  • Average wind speed in December: 9.4km/h

The windiest month (with the highest average wind speed) is August (10.7km/h).
The calmest month (with the lowest average wind speed) is April (8.9km/h).

Average humidity in December
Sério, Brazil

  • Average humidity in December: 76%

The months with the highest relative humidity are May, June and July (85%).
The month with the lowest relative humidity is December (76%).

Average rainfall in December
Sério, Brazil

  • Average rainfall in December: 54mm

The wettest month (with the highest rainfall) is October (96mm).
The driest month (with the least rainfall) is February (44mm).

Average rainfall days in December
Sério, Brazil

  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is August (10.3 days).

Average daylight in December /
Average sunshine in December
Sério, Brazil

  • Average daylight in December: 14h and 0min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).

  • Average sunshine in December: 8h and 30min

The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is September (Average sunshine: 7h and 12min).

Average sunshine days in December
Sério, Brazil

  • Average sunshine days in December: 15.1 days

The months with the most sunshine days are July and August (18.8 days).
The month with the least sunshine days is February (13.2 days).

Average UV index in December
Sério, Brazil

  • Average UV index in December: 6

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in December
Sério, Brazil

  • Average cloud cover in December: 34

The months with the most cloud cover are September and October (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 33).

Average visibility in December
Sério, Brazil

  • Average visibility in December: 9km

The months with the highest visibility are June, July, August and December (9km).
The months with the lowest visibility are January, February, March, April, May, September, October and November (8km).