Weather in Rockhampton in December

Shoulder season. December sits in between. You will get good days and you will lose some. Highs average 32.9 °C, lows 22.5 °C, and rain falls on 11 days — nothing in the month is working against you.

December ranks 11 of 12 — near the bottom of Rockhampton's year. August is the month that works, and the swing between the two is 43 points, which is a different holiday rather than a slightly better one.

Rain on 11 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 32.9 °C days and 22.5 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 7 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest December day reached 41.9 °C and the coldest night fell to 17.5 °C, and the wettest single day dropped 69 mm — roughly 64% of the month's rain in one day.

This is the volatile part. December rainfall has ranged from 15 mm to 472 mm across the twenty years measured — a 457 mm spread around an average of 107 mm. The average is real but almost no individual December looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 12.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 67%.

How December sits in the year

Temperatures hold steady either side: 31.9 °C in November, 32.9 here, 32.6 in January. Nothing about the timing within the month matters much.

Daylight in December

December is at or near the longest days of Rockhampton's year: 13.6 hours of daylight, holding steady all month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 26.9 °C in December — warm enough to stay in as long as you like. The sea peaks at 28 °C in February and bottoms out at 21.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

December in Rockhampton versus nearby

If Rockhampton is one option among several, the nearby comparison is worth making. Bundaberg is a better bet in December — 4 °C cooler, 3 days more rain. Mackay is a better bet in December — 4.9 °C cooler, 2 days more rain.

So: December is a compromise. August is 42 points better and is what Rockhampton is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Rockhampton

See all twelve months in Rockhampton, or where else to go in December.