December weather forecast
Cachoeira de Goiás, Brazil

December

Weather in December

The first month of the summer, December, is still a warm month in Cachoeira de Goiás, Brazil, with an average temperature fluctuating between 27.6°C (81.7°F) and 19.4°C (66.9°F).

Temperature

The transition into December notes an average high-temperature of a still warm 27.6°C (81.7°F), revealing a mild distinction from the 28.3°C (82.9°F) in November. Cachoeira de Goiás encounters a steady low-temperature average of 19.4°C (66.9°F) throughout the month of December.

Heat index

In December, the heat index is estimated at a tropical 32°C (89.6°F). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

The average relative humidity in December is 87%.

Rainfall

The month with the most rainfall in Cachoeira de Goiás, Brazil, is December, when the rain falls for 29.3 days and typically aggregates up to 199mm (7.83") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 6min of daylight.
On the first day of the month, sunrise is at 05:40 and sunset at 18:43. On the last day of December, in Cachoeira de Goiás, sunrise is at 05:52 and sunset at 18:59 -03.

Sunshine

In December, the average sunshine is 6.8h.

UV index

The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What are December temperatures in Cachoeira de Goiás?
The average high-temperature, in December, in Cachoeira de Goiás, is 27.6°C (81.7°F), while the average low-temperature is 19.4°C (66.9°F). In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 32°C (89.6°F).
What is the average humidity in December in Cachoeira de Goiás?
In Cachoeira de Goiás, Brazil, the average relative humidity in December is 87%.
What is the rainiest month in Cachoeira de Goiás?
The month with the most rainfall in Cachoeira de Goiás, Brazil, is December, when the rain falls for 29.3 days and typically aggregates up to 199mm (7.83") of precipitation.
How much does it rain in Cachoeira de Goiás in December?
In Cachoeira de Goiás, Brazil, during December, the rain falls for 29.3 days and regularly aggregates up to 199mm (7.83") of precipitation.
When are the longest days in Cachoeira de Goiás?
With an average of 13h and 6min of daylight, December has the longest days of the year in Cachoeira de Goiás, Brazil.
What is the average length of the day in December in Cachoeira de Goiás?
In December, the average day length is 13h and 6min.
When is the sunrise / sunset in December in Cachoeira de Goiás?
In December, on the first day of the month, sunrise is at 05:40 and sunset at 18:43. On the last day of the month, in Cachoeira de Goiás, sunrise is at 05:52 and sunset at 18:59 -03.
How long on average sun shines in December in Cachoeira de Goiás?
In Cachoeira de Goiás, Brazil, the average sunshine duration in December is 6.8h.
What is the UV index reading in December in Cachoeira de Goiás?
In Cachoeira de Goiás, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents 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 - Cachoeira de Goiás, Brazil
Average temperature in December
Cachoeira de Goiás, Brazil
  • Average high temperature in December: 27.6°C

The warmest month (with the highest average high temperature) is September (34.1°C).
The month with the lowest average high temperature is May (27.1°C).

  • Average low temperature in December: 19.4°C

The month with the highest average low temperature is September (21°C).
The coldest months (with the lowest average low temperature) are June and July (16.6°C).

Average pressure in December - Cachoeira de Goiás, Brazil
Average pressure in December
Cachoeira de Goiás, Brazil
  • Average pressure in December: 1011mbar

The month with the highest atmospheric pressure is July (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).

Average wind speed in December - Cachoeira de Goiás, Brazil
Average wind speed in December
Cachoeira de Goiás, Brazil
  • Average wind speed in December: 6.2km/h

The windiest month (with the highest average wind speed) is August (8.9km/h).
The calmest month (with the lowest average wind speed) is March (5.3km/h).

Average humidity in December - Cachoeira de Goiás, Brazil
Average humidity in December
Cachoeira de Goiás, Brazil
  • Average humidity in December: 87%

The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is August (39%).

Average rainfall in December - Cachoeira de Goiás, Brazil
Average rainfall in December
Cachoeira de Goiás, Brazil
  • Average rainfall in December: 199mm

The wettest month (with the highest rainfall) is December (199mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in December - Cachoeira de Goiás, Brazil
Average rainfall days in December
Cachoeira de Goiás, Brazil
  • Average rainfall days in December: 29.3 days

The month with the highest number of rainy days is December (29.3 days).
The month with the least rainy days is August (0.8 days).

Average daylight in December / Average sunshine in December - Cachoeira de Goiás, Brazil
Average daylight in December /
Average sunshine in December
Cachoeira de Goiás, Brazil
  • Average daylight in December: 13h and 1min

The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 12min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).

Average sunshine days in December - Cachoeira de Goiás, Brazil
Average sunshine days in December
Cachoeira de Goiás, Brazil
  • Average sunshine days in December: 1.8 days

The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is February (0.9 days).

Average UV index in December - Cachoeira de Goiás, Brazil
Average UV index in December
Cachoeira de Goiás, Brazil
  • Average UV index in December: 6

The months with the highest UV index are August and September (UV index 7).
The months with the lowest UV index are February and March (UV index 5).

Average cloud cover in December - Cachoeira de Goiás, Brazil
Average cloud cover in December
Cachoeira de Goiás, Brazil
  • Average cloud cover in December: 58

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 11).

Average visibility in December - Cachoeira de Goiás, Brazil
Average visibility in December
Cachoeira de Goiás, Brazil
  • Average visibility in December: 7km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April and December (7km).

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