December weather forecast
Guaraçaí, Brazil

The first month of the summer, December, is also a hot month in Guaraçaí, Brazil, with an average temperature ranging between min 22.3°C (72.1°F) and max 30.9°C (87.6°F).

Temperature

The weather during December records an average high-temperature of a still hot 30.9°C (87.6°F), closely mirroring the preceding month. December generally records an average low-temperature of 22.3°C (72.1°F).

Heat index

For most parts of December, the heat index is computed to be an extremely hot 40°C (104°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in December in Guaraçaí is 78%.

Rainfall

In Guaraçaí, Brazil, during December, the rain falls for 26.1 days and regularly aggregates up to 171mm (6.73") of precipitation. Throughout the year, in Guaraçaí, there are 194.8 rainfall days, and 1177mm (46.34") of precipitation is accumulated.

Daylight

December has the longest days of the year in Guaraçaí, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 05:34 and sunset at 18:53. On the last day of December, in Guaraçaí, Brazil, sunrise is at 05:46 and sunset at 19:09 -03.

Sunshine

The average sunshine in December in Guaraçaí, Brazil, is 7.9h.

UV index

January through July, September, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.