December weather forecast
São Mateus do Sul, Brazil

December

Weather in December

The first month of the summer, December, is still a warm month in São Mateus do Sul, Brazil, with an average temperature fluctuating between 16.4°C (61.5°F) and 26.9°C (80.4°F).

Temperature

January and December are the warmest months, with an average high-temperature of 26.9°C (80.4°F).

Humidity

In São Mateus do Sul, the average relative humidity in December is 84%.

Rainfall

In São Mateus do Sul, in December, it is raining for 18.4 days, with typically 81mm (3.19") of accumulated precipitation. Throughout the year, in São Mateus do Sul, there are 179.8 rainfall days, and 939mm (36.97") of precipitation is accumulated.

Snowfall

January through June, August through December are months without snowfall in São Mateus do Sul.

Daylight

With an average of 13h and 42min of daylight, December has the longest days of the year.
On the first day of December in São Mateus do Sul, sunrise is at 05:21 and sunset at 19:00. On the last day of the month, sunrise is at 05:33 and sunset at 19:16 -03.

Sunshine

In São Mateus do Sul, Brazil, the average sunshine in December is 7.2h.

UV index

The average daily maximum UV index in December in São Mateus do Sul is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 5 suggests this advice:
Take precautions - Protection against sun damage is advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What time of the year is the hottest in São Mateus do Sul?
The yearly peak temperatures in São Mateus do Sul occur in January and December, averaging a high-temperature of 26.9°C (80.4°F).
What are the temperatures in São Mateus do Sul in December?
December temperatures in São Mateus do Sul vary between a high-temperature of 26.9°C (80.4°F) and a low-temperature of 16.4°C (61.5°F).
What is the average humidity in December in São Mateus do Sul?
In December, the average relative humidity in São Mateus do Sul, Brazil, is 84%.
How many days does it rain in December in São Mateus do Sul?
In São Mateus do Sul, in December, during 18.4 rainfall days, 81mm (3.19") of precipitation is typically accumulated.
When it does not snow in São Mateus do Sul?
In São Mateus do Sul, snow does not fall in January through June, August through December.
When are the longest days in São Mateus do Sul?
With an average of 13h and 42min of daylight, December has the longest days of the year.
What is the average length of the day in December in São Mateus do Sul?
In December, the average day length in São Mateus do Sul, Brazil, is 13h and 44min.
What time are sunrise and sunset in December in São Mateus do Sul?
In December, on the first day of the month, sunrise is at 05:21 and sunset at 19:00. On the last day of the month, sunrise is at 05:33 and sunset at 19:16 -03.
How many hours of sunshine does São Mateus do Sul have in December?
In December, the average sunshine duration in São Mateus do Sul is 7.2h.
What is the UV index reading in December in São Mateus do Sul?
The average daily maximum UV index in December in São Mateus do Sul is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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 snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - São Mateus do Sul, Brazil
Average temperature in December
São Mateus do Sul, Brazil
  • Average high temperature in December: 26.9°C

The warmest months (with the highest average high temperature) are January and December (26.9°C).
The month with the lowest average high temperature is June (18.8°C).

  • Average low temperature in December: 16.4°C

The month with the highest average low temperature is February (16.8°C).
The coldest month (with the lowest average low temperature) is July (9.4°C).

Average pressure in December - São Mateus do Sul, Brazil
Average pressure in December
São Mateus do Sul, Brazil
  • Average pressure in December: 1012.4mbar

The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is December (1012.4mbar).

Average wind speed in December - São Mateus do Sul, Brazil
Average wind speed in December
São Mateus do Sul, Brazil
  • Average wind speed in December: 7.6km/h

The windiest months (with the highest average wind speed) are October and November (8.1km/h).
The calmest month (with the lowest average wind speed) is April (6.9km/h).

Average humidity in December - São Mateus do Sul, Brazil
Average humidity in December
São Mateus do Sul, Brazil
  • Average humidity in December: 84%

The months with the highest relative humidity are May and June (88%).
The month with the lowest relative humidity is September (81%).

Average rainfall in December - São Mateus do Sul, Brazil
Average rainfall in December
São Mateus do Sul, Brazil
  • Average rainfall in December: 81mm

The wettest month (with the highest rainfall) is October (109mm).
The driest months (with the least rainfall) are April and November (57mm).

Average rainfall days in December - São Mateus do Sul, Brazil
Average rainfall days in December
São Mateus do Sul, Brazil
  • Average rainfall days in December: 18.4 days

The month with the highest number of rainy days is January (18.6 days).
The month with the least rainy days is August (10.8 days).

Average snowfall in December - São Mateus do Sul, Brazil
Average snowfall in December
São Mateus do Sul, Brazil
  • Average snowfall in December: 0mm

The month with the highest snowfall is July (5mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).

Average snowfall days in December - São Mateus do Sul, Brazil
Average snowfall days in December
São Mateus do Sul, Brazil
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is July (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, August, September, October, November and December (0 days).

Average daylight in December / Average sunshine in December - São Mateus do Sul, Brazil
Average daylight in December /
Average sunshine in December
São Mateus do Sul, 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 30min).

  • Average sunshine in December: 7h and 1min

The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is May (Average sunshine: 6h and 24min).

Average sunshine days in December - São Mateus do Sul, Brazil
Average sunshine days in December
São Mateus do Sul, Brazil
  • Average sunshine days in December: 10.9 days

The month with the most sunshine days is August (17.1 days).
The month with the least sunshine days is February (8.6 days).

Average UV index in December - São Mateus do Sul, Brazil
Average UV index in December
São Mateus do Sul, Brazil
  • Average UV index in December: 5

The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are April, May, June, July and September (UV index 4).

Average cloud cover in December - São Mateus do Sul, Brazil
Average cloud cover in December
São Mateus do Sul, Brazil
  • Average cloud cover in December: 61

The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 42).

Average visibility in December - São Mateus do Sul, Brazil
Average visibility in December
São Mateus do Sul, Brazil
  • Average visibility in December: 7km

The months with the highest visibility are July, August, September, October, November and December (7km).
The months with the lowest visibility are January, February, March, April, May and June (6km).

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