December weather forecast
Matinhos, Brazil

December

Weather in December

December, the first month of the summer in Matinhos, is also a moderately hot month, with an average temperature ranging between min 20.2°C (68.4°F) and max 28.5°C (83.3°F).

Temperature

The commencement of December notes an average high-temperature of a still warm 28.5°C (83.3°F), exhibiting little difference from the previous month. Matinhos, in the month of December, anticipates a consistent average low-temperature of 20.2°C (68.4°F).

Heat index

In December, the average heat index is evaluated at a tropical 34°C (93.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

January, February and December, with an average relative humidity of 82%, are the least humid months in Matinhos.

Rainfall

In Matinhos, in December, it is raining for 21.6 days, with typically 107mm (4.21") of accumulated precipitation. Throughout the year, there are 204.4 rainfall days, and 1031mm (40.59") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 13h and 42min of daylight.
On the first day of the month, sunrise is at 05:14 and sunset at 18:52. On the last day of December, sunrise is at 05:25 and sunset at 19:09 -03.

Sunshine

In Matinhos, the average sunshine in December is 6.6h.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Matinhos, Brazil. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

How hot is December in Matinhos?
Matinhos in December has an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 20.2°C (68.4°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in December is evaluated at 34°C (93.2°F).
What is the least humid month in Matinhos?
The months with the lowest humidity are January, February and December, with an average relative humidity of 82%.
What is the average humidity in December in Matinhos?
The average relative humidity in December in Matinhos is 82%.
How much does it rain in Matinhos in December?
In December, in Matinhos, the rain falls for 21.6 days. Throughout December, 107mm (4.21") of precipitation is accumulated.
When are the longest days in Matinhos?
With an average of 13h and 42min of daylight, December has the longest days of the year in Matinhos, Brazil.
How many hours of daylight does Matinhos have in December?
In December, the average day length in Matinhos is 13h and 43min.
When is the sunrise / sunset in December in Matinhos?
On the first day of December in Matinhos, sunrise is at 05:14 and sunset at 18:52. On the last day of the month, sunrise is at 05:25 and sunset at 19:09 -03.
How many hours of sunshine does Matinhos have in December?
In Matinhos, the average sunshine duration in December is 6.6h.
What are the months with the highest UV index in Matinhos?
The months with the highest UV index in Matinhos, Brazil, are January through March, November and December, with an average maximum UV index of 6.
How high is the UV index in December in Matinhos?
The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Matinhos, Brazil
Average temperature in December
Matinhos, Brazil
  • Average high temperature in December: 28.5°C

The warmest month (with the highest average high temperature) is January (29.4°C).
The month with the lowest average high temperature is July (21.3°C).

  • Average low temperature in December: 20.2°C

The month with the highest average low temperature is January (21.3°C).
The coldest month (with the lowest average low temperature) is July (14.1°C).

Average pressure in December - Matinhos, Brazil
Average pressure in December
Matinhos, Brazil
  • Average pressure in December: 1011.9mbar

The month with the highest atmospheric pressure is July (1020.2mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).

Average wind speed in December - Matinhos, Brazil
Average wind speed in December
Matinhos, Brazil
  • Average wind speed in December: 6.7km/h

The windiest month (with the highest average wind speed) is November (7km/h).
The calmest months (with the lowest average wind speed) are June, July and August (5.9km/h).

Average humidity in December - Matinhos, Brazil
Average humidity in December
Matinhos, Brazil
  • Average humidity in December: 82%

The months with the highest relative humidity are May, June and July (85%).
The months with the lowest relative humidity are January, February and December (82%).

Average rainfall in December - Matinhos, Brazil
Average rainfall in December
Matinhos, Brazil
  • Average rainfall in December: 107mm

The wettest month (with the highest rainfall) is February (141mm).
The driest months (with the least rainfall) are April and August (56mm).

Average rainfall days in December - Matinhos, Brazil
Average rainfall days in December
Matinhos, Brazil
  • Average rainfall days in December: 21.6 days

The month with the highest number of rainy days is January (23.3 days).
The month with the least rainy days is August (11.6 days).

Average daylight in December / Average sunshine in December - Matinhos, Brazil
Average daylight in December /
Average sunshine in December
Matinhos, Brazil
  • Average daylight in December: 13h and 4min

The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).

  • Average sunshine in December: 6h and 4min

The months with the most sunshine are January, April and August (Average sunshine: 6h and 54min).
The months with the least sunshine are October and November (Average sunshine: 6h and 6min).

Average sunshine days in December - Matinhos, Brazil
Average sunshine days in December
Matinhos, Brazil
  • Average sunshine days in December: 6.9 days

The month with the most sunshine days is July (17.3 days).
The month with the least sunshine days is January (5 days).

Average UV index in December - Matinhos, Brazil
Average UV index in December
Matinhos, 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 April, May, June, July, August, September and October (UV index 5).

Average cloud cover in December - Matinhos, Brazil
Average cloud cover in December
Matinhos, Brazil
  • Average cloud cover in December: 58

The months with the most cloud cover are October and November (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 49).

Average visibility in December - Matinhos, Brazil
Average visibility in December
Matinhos, Brazil
  • Average visibility in December: 8km

The months with the highest visibility are January, February, March, April, May, June, August, September and December (8km).
The months with the lowest visibility are July, October and November (7km).

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