December weather forecast
Cacequi, Brazil

December, the first month of the summer in Cacequi, is a tropical month, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 18.1°C (64.6°F).

Temperature

A minimal variation is noted in Cacequi's average high-temperature at the onset of December, reaching a hot 30.3°C (86.5°F) from November's 27.7°C (81.9°F). During December, Cacequi reports a marked contrast from daily peak temperatures, with an average nighttime reading of 18.1°C (64.6°F).

Heat index

For December, the heat index is appraised at a very hot 35°C (95°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for 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. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

With an average relative humidity of 67%, December is the least humid month.

Rainfall

In Cacequi, during December, the rain falls for 12.8 days and regularly aggregates up to 91mm (3.58") of precipitation. Throughout the year, there are 135.1 rainfall days, and 930mm (36.61") of precipitation is accumulated.

Daylight

The month with the longest days in Cacequi is December, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 05:30 and sunset at 19:26. On the last day of December, in Cacequi, sunrise is at 05:41 and sunset at 19:43 -03.

Sunshine

November and December, with an average of 8.8h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.