December weather forecast
Cachoeira dos Índios, Brazil

December

Weather in December

The first month of the summer, December, is also a hot month in Cachoeira dos Índios, Brazil, with an average temperature fluctuating between 22.8°C (73°F) and 33.2°C (91.8°F).

Temperature

During December, Cachoeira dos Índios records an average high-temperature of a still tropical 33.2°C (91.8°F), marking a slight divergence from November's 34.3°C (93.7°F). The temperature dips to an average of 22.8°C (73°F) during December nights.

Heat index

For most parts of December, the heat index is appraised at a sweltering 38°C (100.4°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In December, the average relative humidity is 54%.

Rainfall

In December, the rain falls for 12.3 days. Throughout December, 55mm (2.17") of precipitation is accumulated. Throughout the year, there are 159.2 rainfall days, and 757mm (29.8") of precipitation is accumulated.

Daylight

The month with the longest days in Cachoeira dos Índios is December, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:09 and sunset at 17:38. On the last day of the month, sunrise is at 05:22 and sunset at 17:53 -03.

Sunshine

In December, the average sunshine is 8.7h.

UV index

March, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 during December translates into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

How hot is it in December?
The average high-temperature and low-temperature in Cachoeira dos Índios during December are 33.2°C (91.8°F) and 22.8°C (73°F) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in December is appraised at 38°C (100.4°F).
What is the average humidity in December?
In Cachoeira dos Índios, the average relative humidity in December is 54%.
How much does it rain in December?
In Cachoeira dos Índios, during December, the rain falls for 12.3 days and regularly aggregates up to 55mm (2.17") of precipitation.
When are the longest days?
December has the longest days of the year, with an average of 12h and 30min of daylight.
How many hours of daylight does Cachoeira dos Índios have in December?
The average day length in December is 12h and 31min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 05:09 and sunset at 17:38. On the last day of the month, sunrise is at 05:22 and sunset at 17:53 -03.
How many hours of sunshine does Cachoeira dos Índios have in December?
The average sunshine duration in December is 8.7h.
What is the month with the highest UV index?
The months with the highest UV index are March, August through December, with an average maximum UV index of 7.
How high is the UV index in December?
In December, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Cachoeira dos Índios, Brazil
Average temperature in December
Cachoeira dos Índios, Brazil
  • Average high temperature in December: 33.2°C

The warmest months (with the highest average high temperature) are October and November (34.3°C).
The month with the lowest average high temperature is June (29.8°C).

  • Average low temperature in December: 22.8°C

The months with the highest average low temperature are November and December (22.8°C).
The coldest month (with the lowest average low temperature) is July (18.3°C).

Average pressure in December - Cachoeira dos Índios, Brazil
Average pressure in December
Cachoeira dos Índios, Brazil
  • Average pressure in December: 1010.8mbar

The month with the highest atmospheric pressure is July (1015.4mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).

Average wind speed in December - Cachoeira dos Índios, Brazil
Average wind speed in December
Cachoeira dos Índios, Brazil
  • Average wind speed in December: 13.5km/h

The windiest month (with the highest average wind speed) is September (15.4km/h).
The calmest months (with the lowest average wind speed) are March and April (9.3km/h).

Average humidity in December - Cachoeira dos Índios, Brazil
Average humidity in December
Cachoeira dos Índios, Brazil
  • Average humidity in December: 54%

The month with the highest relative humidity is April (76%).
The months with the lowest relative humidity are October and November (49%).

Average rainfall in December - Cachoeira dos Índios, Brazil
Average rainfall in December
Cachoeira dos Índios, Brazil
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is March (170mm).
The driest month (with the least rainfall) is September (2mm).

Average rainfall days in December - Cachoeira dos Índios, Brazil
Average rainfall days in December
Cachoeira dos Índios, Brazil
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is March (24.2 days).
The month with the least rainy days is September (2.9 days).

Average daylight in December / Average sunshine in December - Cachoeira dos Índios, Brazil
Average daylight in December /
Average sunshine in December
Cachoeira dos Índios, Brazil
  • Average daylight in December: 12h and 3min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in December: 8h and 4min

The month with the most sunshine is September (Average sunshine: 9h and 48min).
The month with the least sunshine is March (Average sunshine: 7h and 30min).

Average sunshine days in December - Cachoeira dos Índios, Brazil
Average sunshine days in December
Cachoeira dos Índios, Brazil
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is September (26 days).
The month with the least sunshine days is March (5.2 days).

Average UV index in December - Cachoeira dos Índios, Brazil
Average UV index in December
Cachoeira dos Índios, Brazil
  • Average UV index in December: 7

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

Average cloud cover in December - Cachoeira dos Índios, Brazil
Average cloud cover in December
Cachoeira dos Índios, Brazil
  • Average cloud cover in December: 35

The month with the most cloud cover is April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 19).

Average visibility in December - Cachoeira dos Índios, Brazil
Average visibility in December
Cachoeira dos Índios, Brazil
  • Average visibility in December: 10km

The months with the highest visibility are June, July, August, September, October, November and December (10km).
The month with the lowest visibility is April (8km).

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