December weather forecast
Mackay, Australia

December in Mackay welcomes back summer in full swing. The temperatures lie slightly below the January high, but the feel of summer is unmistakable. The rainfall inches up to its annual crest, measured at 103mm (4.06") and dispersed across approximately 15.1 days. Despite these scattered spells of rain, Mackay's charm remains undeterred with the sunny, warm outdoors showering joy on its visitors. Soaking in the beachside sunshine or indulging in water sports, December's weather presents the perfect year-end celebrations in this Aussie coastal city.

Temperature

The commencement of December brings an average high-temperature of a still warm 28.1°C (82.6°F), marking an inconsequential divergence from November. December nights experience a minor temperature downturn to a still warm 23.9°C (75°F).

Heat index

December's average heat index is estimated at a hot 32°C (89.6°F). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Mackay, the average relative humidity in December is 76%.

Rainfall

In Mackay, during December, the rain falls for 15.1 days and regularly aggregates up to 103mm (4.06") of precipitation. Throughout the year, in Mackay, there are 163.3 rainfall days, and 841mm (33.11") of precipitation is accumulated.

Daylight

The month with the longest days in Mackay is December, with an average of 13h and 24min of daylight.
On the first day of December, sunrise is at 5:12 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 6:48 pm AEST.

Sunshine

In Mackay, the average sunshine in December is 10.2h.

UV index

February, November and December, with an average maximum UV index of 7, are months with the highest UV index in Mackay. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.