Weather in Armidale in September

Prime time. If you get to pick your dates, September is the one. Highs average 18.2 °C, lows 5 °C, and rain falls on 7 days — nothing in the month is working against you.

September ranks 2 of 12 in Armidale. Only April scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 7 days, 1 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: it never really gets hot: not one day in an average September reaches 30 °C. Across the twenty years measured, the hottest September day reached 28.8 °C and the coldest night fell to -3.6 °C, and the wettest single day dropped 38 mm — roughly 90% of the month's rain in one day.

September is moderately variable: 4 mm in the driest year against 100 mm in the wettest, around an average of 42 mm. Roughly two Septembers in three land near that average, and the third does something else entirely.

Wind is light at 8.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 66%.

How September sits in the year

The month is on the way up: 4.2 °C warmer than August, and October adds another 3.5 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in September

11.9 hours of daylight, gaining 0.9 hours across the month. That is between Armidale's extremes of 14.1 and 10.2 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 25.9 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1053 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, March is the trade worth considering — 11 points weaker on weather, and materially quieter.

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

September in Armidale versus nearby

If Armidale is one option among several, the nearby comparison is worth making. Tamworth is a better bet in September — 4.5 °C warmer, 2 days less rain. Coffs Harbour is close enough to be a coin toss — 3.5 °C warmer, the same number of rain days.

So: September is effectively as good as it gets here — 2 points behind April, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Armidale

See all twelve months in Armidale, or where else to go in September.