São Gabriel da Cachoeira
Brazil
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
São Gabriel da Cachoeira, Brazil

The first month of the summer, December, is still a hot month in São Gabriel da Cachoeira, Brazil, with average temperature fluctuating between 30.8°C (87.4°F) and 22.5°C (72.5°F).

Temperature

In São Gabriel da Cachoeira, the average high-temperature in December is essentially the same as in November - a still tropical 30.8°C (87.4°F). In December, the average low-temperature is 22.5°C (72.5°F).

Heat index

In December, the average heat index is calculated to a very hot 38.9°C (102°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, clothing, wind, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In São Gabriel da Cachoeira, the average relative humidity is 76%.

Rainfall

In São Gabriel da Cachoeira, 272mm (10.7") of precipitation is typically accumulated. During the entire year, São Gabriel da Cachoeira aggregates up to 2909mm (114.5") of precipitation.

Daylight

Months with the longest days are January through December, with an average of 12.1h of daylight. January through December, with an average of 12.1h of daylight, are months with the shortest days in São Gabriel da Cachoeira.

What is the temperature in December in São Gabriel da Cachoeira?

In São Gabriel da Cachoeira, in December, the average high-temperature is 30.8°C (87.4°F), and the average low-temperature is 22.5°C (72.5°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that calculates temperature value influenced by the moisture in the air, in December is evaluated at 38.9°C (102°F).

What is the average humidity in December in São Gabriel da Cachoeira?

In December, the average relative humidity in São Gabriel da Cachoeira is 76%.

How much does it rain in São Gabriel da Cachoeira in December?

During December, São Gabriel da Cachoeira regularly aggregates up to 272mm (10.7") of precipitation.

When are the longest days in São Gabriel da Cachoeira?

Months with the longest days in São Gabriel da Cachoeira are January through December, with an average of 12.1h of daylight.

What is the month with the shortest days in São Gabriel da Cachoeira?

January through December, with an average of 12.1h of daylight, are months with the shortest days in São Gabriel da Cachoeira.

How many hours of daylight does São Gabriel da Cachoeira have in December?

The average length of the day in December is 12.1h.
Average temperature in December - São Gabriel da Cachoeira, Brazil
  • Average high temperature in December: 30.8°C

The warmest month (with the highest average high temperature) is October (31.5°C).
Months with the lowest average high temperature are June and July (29.4°C).

  • Average low temperature in December: 22.5°C

Months with the highest average low temperature are February, March, April and November (22.6°C).
The coldest month (with the lowest average low temperature) is July (21.6°C).

Average humidity in December - São Gabriel da Cachoeira, Brazil
  • Average humidity in December: 76%

Months with the highest relative humidity are January, February, May and June (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December - São Gabriel da Cachoeira, Brazil
  • Average rainfall in December: 272mm

The wettest month (with the highest rainfall) is May (317mm).
The driest month (with the lowest rainfall) is September (176mm).

Average daylight in December - São Gabriel da Cachoeira, Brazil
  • Average daylight in December: 12.1h

Months with the longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).
Months with shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12.1h).