Weather in Central Coast in December

A good month. December works. It is not the peak, but nothing about it fights you. Highs average 27.6 °C, lows 18 °C, and rain falls on 11 days — nothing in the month is working against you.

December ranks 8 of 12 in Central Coast: past the worst of the year but short of September, which is the month to book if the dates are open.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 8 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest December day reached 40.6 °C and the coldest night fell to 11.2 °C, and the wettest single day dropped 44 mm — roughly 55% of the month's rain in one day.

December is moderately variable: 2 mm in the driest year against 148 mm in the wettest, around an average of 80 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 4.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 68%.

How December sits in the year

The month is on the way up: 1.6 °C warmer than November, and January adds another 1.6 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in December

December is at or near the longest days of Central Coast's year: 14.3 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 22 °C in December — comfortable for a proper swim. The sea peaks at 24.1 °C in February and bottoms out at 18.7 °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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

December in Central Coast versus nearby

If Central Coast is one option among several, the nearby comparison is worth making. Sydney is close enough to be a coin toss — 3.3 °C cooler, the same number of rain days. Maitland is the weaker option in December — 3.9 °C warmer, the same number of rain days.

So: December works, with September the better month by 12 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Central Coast

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