Weather in Gawler in September

Prime time. September is about as good as Gawler gets. Highs average 19.9 °C, lows 7.8 °C, and rain falls on 8 days — nothing in the month is working against you.

September ranks 4 of 12 in Gawler: past the worst of the year but short of October, which is the month to book if the dates are open.

Rain on 8 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 32.1 °C and the coldest night fell to 1.7 °C, and the wettest single day dropped 33 mm — roughly 70% of the month's rain in one day.

September is moderately variable: 13 mm in the driest year against 122 mm in the wettest, around an average of 47 mm. Roughly two Septembers in three land near that average, and the third does something else entirely.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How September sits in the year

The month is on the way up: 3.3 °C warmer than August, and October adds another 4.3 °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

11.8 hours of daylight, gaining 1.1 hours across the month. That is between Gawler's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 27.4 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

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

September in Gawler versus nearby

If Gawler is one option among several, the nearby comparison is worth making. Adelaide is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Whyalla is close enough to be a coin toss — within a degree on temperature, 3 days less rain.

So: September works, with October the better month by 7 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Gawler

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