December weather forecast
Cajazeiras, Brazil

The first month of the summer, December, is still a tropical month in Cajazeiras, Brazil, with an average temperature varying between 23.3°C (73.9°F) and 34°C (93.2°F).

Temperature

December's weather displays an average high-temperature of a still tropical 34°C (93.2°F), slightly varied from November's 34.5°C (94.1°F). During the month of December, the temperature falls to an average of 23.3°C (73.9°F).

Heat index

December's mean heat index is calculated to be a very hot 39°C (102.2°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Cajazeiras, the average relative humidity in December is 52%.

Rainfall

In Cajazeiras, during December, the rain falls for 12.2 days and regularly aggregates up to 35mm (1.38") of precipitation. In Cajazeiras, during the entire year, the rain falls for 161.9 days and collects up to 582mm (22.91") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:08 and sunset at 17:38. On the last day of December, in Cajazeiras, sunrise is at 05:21 and sunset at 17:53 -03.

Sunshine

In December, the average sunshine in Cajazeiras, Brazil, is 9.1h.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index in Cajazeiras, Brazil. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, an average UV index of 7 transforms into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.