Mackay in December
So, what's Mackay actually like in December? In a word: warm. It's summer, and the days are averaging 29.0 degrees.
The average daily maximum is 29.0 degrees with overnight lows of 24.1 degrees. Warm days and warm nights. It doesn't cool down much, even after sunset.
At 29.0 degrees, December runs 2.7 degrees above Mackay's annual average of 26.3 degrees.
Rainfall in December averages 230mm over about 17 days. That means roughly a 57% chance of rain on any given day, so definitely bring rain gear.
Sunshine-wise, December delivers around 22.5 MJ/m2 of daily solar radiation. UV sits in the extreme category. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
At 5.1/10 on the Comfort Score, December is middle of the road.
For your suitcase: t-shirts with a light layer for evenings, a rain jacket or compact umbrella, and serious sun protection.
Being on the coast is a blessing in December. The afternoon sea breeze is nature's air conditioning.
The full data breakdown is below. You can also see how other Australian cities compare in December.
December at a Glance
Temperature Range
Daily temperature range in December. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Comfortable casual wear suitable for warm days
- Proper rain gear for frequent showers
- High SPF sunscreen (50+), sunglasses, and UV-protective clothing
Coming From Overseas?
How December in Mackay stacks up against major cities around the world.
About 21 degrees warmer and considerably wetter.
About 23 degrees warmer and considerably wetter.
About 17 degrees warmer and considerably wetter.
How December Compares
Mackay's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 30.2 | 25.4 | 172mm | 4.4 |
| Feb | 29.3 | 24.4 | 260mm | 4.6 |
| Mar | 28.1 | 24.3 | 142mm | 5.4 |
| Apr | 26.7 | 21.7 | 117mm | 6.9 |
| May | 23.9 | 19.7 | 70mm | 8.5 |
| Jun | 22.7 | 14.0 | 53mm | 9.1 |
| Jul | 21.6 | 14.6 | 20mm | 8.6 |
| Aug | 23.2 | 16.5 | 35mm | 9.4 |
| Sep | 25.5 | 18.7 | 11mm | 10.0 |
| Oct | 27.1 | 21.0 | 28mm | 8.8 |
| Nov | 28.6 | 23.7 | 136mm | 6.8 |
| Dec | 29.0 | 24.1 | 230mm | 5.1 |