December weather forecast
Santa Bárbara D'Oeste, Brazil

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Weather in December

December, the first month of the summer in Santa Bárbara D'Oeste, is still a warm month, with temperature in the range of an average high of 28.8°C (83.8°F) and an average low of 19.5°C (67.1°F).

Temperature

Santa Bárbara D'Oeste records an average high-temperature of a still warm 28.8°C (83.8°F) in December, closely mirroring the climate of the previous month. Santa Bárbara D'Oeste's nights in December experience an average temperature drop to an enjoyable 19.5°C (67.1°F).

Heat index

December's average heat index is evaluated at a hot 34°C (93.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight 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 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In December, the average relative humidity in Santa Bárbara D'Oeste, Brazil, is 79%.

Rainfall

In Santa Bárbara D'Oeste, in December, during 21.5 rainfall days, 93mm (3.66") of precipitation is typically accumulated. In Santa Bárbara D'Oeste, during the entire year, the rain falls for 178.2 days and collects up to 730mm (28.74") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 30min of daylight.
On the first day of December, sunrise is at 05:15 and sunset at 18:41. On the last day of the month, sunrise is at 05:27 and sunset at 18:58 -03.

Sunshine

In December, the average sunshine is 8.3h.

UV index

The months with the highest UV index are January through March, August through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 6 during December translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

How hot is it in Santa Bárbara D'Oeste in December?

The high-temperature, in December, in Santa Bárbara D'Oeste, records 28.8°C (83.8°F), while the low-temperature is 19.5°C (67.1°F). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in December is evaluated at 34°C (93.2°F).

What is the average humidity in December in Santa Bárbara D'Oeste?

The average relative humidity in December is 79%.

How many days does it rain in December in Santa Bárbara D'Oeste?

In Santa Bárbara D'Oeste, Brazil, during December, the rain falls for 21.5 days and regularly aggregates up to 93mm (3.66") of precipitation.

When are the longest days in Santa Bárbara D'Oeste?

With an average of 13h and 30min of daylight, December has the longest days of the year in Santa Bárbara D'Oeste, Brazil.

What is the average length of the day in December in Santa Bárbara D'Oeste?

The average day length in December in Santa Bárbara D'Oeste is 13h and 31min.

What time are sunrise and sunset in December in Santa Bárbara D'Oeste?

On the first day of December, sunrise is at 05:15 and sunset at 18:41. On the last day of the month, sunrise is at 05:27 and sunset at 18:58 -03.

How long on average sun shines in December in Santa Bárbara D'Oeste?

In Santa Bárbara D'Oeste, Brazil, the average sunshine duration in December is 8.3h.

When is the highest UV index in Santa Bárbara D'Oeste?

January through March, August through December, with an average maximum UV index of 6, are months with the highest UV index in Santa Bárbara D'Oeste, Brazil.

What is the UV index intensity in December in Santa Bárbara D'Oeste?

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 unsafe exposure to Sun's UV rays.

Average temperature in December
Santa Bárbara D'Oeste, Brazil

Average temperature in December - Santa Bárbara D
  • Average high temperature in December: 28.8°C

The warmest month (with the highest average high temperature) is October (29.3°C).
The month with the lowest average high temperature is June (22.8°C).

  • Average low temperature in December: 19.5°C

The month with the highest average low temperature is January (19.6°C).
The coldest month (with the lowest average low temperature) is July (13.7°C).

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Average pressure in December
Santa Bárbara D'Oeste, Brazil

Average pressure in December - Santa Bárbara D
  • Average pressure in December: 1011.7mbar

The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is December (1011.7mbar).

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Average wind speed in December
Santa Bárbara D'Oeste, Brazil

Average wind speed in December - Santa Bárbara D
  • Average wind speed in December: 8.2km/h

The windiest month (with the highest average wind speed) is October (10km/h).
The calmest months (with the lowest average wind speed) are February and April (7.3km/h).

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Average humidity in December
Santa Bárbara D'Oeste, Brazil

Average humidity in December - Santa Bárbara D
  • Average humidity in December: 79%

The month with the highest relative humidity is March (84%).
The month with the lowest relative humidity is September (63%).

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Average rainfall in December
Santa Bárbara D'Oeste, Brazil

Average rainfall in December - Santa Bárbara D
  • Average rainfall in December: 93mm

The wettest month (with the highest rainfall) is January (140mm).
The driest month (with the least rainfall) is August (19mm).

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Average rainfall days in December
Santa Bárbara D'Oeste, Brazil

Average rainfall days in December - Santa Bárbara D
  • Average rainfall days in December: 21.5 days

The month with the highest number of rainy days is January (23.7 days).
The month with the least rainy days is August (5.6 days).

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Average daylight in December /
Average sunshine in December
Santa Bárbara D'Oeste, Brazil

Average daylight in December / Average sunshine in December - Santa Bárbara D
  • 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: 8h and 2min

The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).

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Average sunshine days in December
Santa Bárbara D'Oeste, Brazil

Average sunshine days in December - Santa Bárbara D
  • Average sunshine days in December: 7.6 days

The month with the most sunshine days is August (24.4 days).
The month with the least sunshine days is February (5.4 days).

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Average UV index in December
Santa Bárbara D'Oeste, Brazil

Average UV index in December - Santa Bárbara D
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June and July (UV index 5).

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Average cloud cover in December
Santa Bárbara D'Oeste, Brazil

Average cloud cover in December - Santa Bárbara D
  • Average cloud cover in December: 43

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in December
Santa Bárbara D'Oeste, Brazil

Average visibility in December - Santa Bárbara D
  • Average visibility in December: 9km

The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May and June (8km).

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Santa Bárbara D'Oeste, Brazil

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