December weather forecast
Irapuru, Brazil

The first month of the summer, December, is also a hot month in Irapuru, Brazil, with an average temperature fluctuating between 22.2°C (72°F) and 30.8°C (87.4°F).

Temperature

Irapuru's average high-temperature marks a still tropical 30.8°C (87.4°F) with the advent of December, closely mirroring that of the preceding month. An average low-temperature of 22.2°C (72°F) is noted in Irapuru during the month of December.

Heat index

The heat index value for December is estimated at a fiery hot 39°C (102.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Data suggests that the heat index is set for environments in shade and with a light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in December is 76%.

Rainfall

In December, in Irapuru, the rain falls for 24.5 days. Throughout December, 162mm (6.38") of precipitation is accumulated. In Irapuru, during the entire year, the rain falls for 189.5 days and collects up to 1170mm (46.06") of precipitation.

Daylight

With an average of 13h and 24min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:33 and sunset at 18:55. On the last day of December, sunrise is at 05:45 and sunset at 19:11 -03.

Sunshine

In December, the average sunshine is 7.8h.

UV index

The average daily maximum UV index in December in Irapuru is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.