Mackay weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: April, September – December
What is the weather like in Mackay in December?
In December, Mackay is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.8 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 13 rainy days and 139 mm in total. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Mackay.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 86 | 83 | 73 |
| Day | 27° | 28° | 28° |
| Night | 23° | 24° | 24° |
| Sea | 26° | 28° | 28° |
| Sun | 8 h | 8 h | 7 h |
| Rain days | 11 | 13 | 18 |
More details for December
- Daylight
- 13 h 24 min05:16 – 18:41
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 29 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Time zone
- UTC+10Australia/Brisbane
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %35 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Mackay in December: quick answers
Is Mackay hot in December?
Yes. In December, Mackay is hot: daytime highs average 28 °C and nights stay around 24 °C. On about 4 days the thermometer climbs to 30 °C or more.
Can you swim in Mackay in December?
Yes. In December the sea averages 27.8 °C – lovely and warm for swimming.
Does it rain much in Mackay in December?
Rain is frequent, with about 13 rainy days and 139 mm in total.
Mackay month by month
The whole year in MackayAll destinations: AustraliaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences