Weather in Griffith in September

Prime time. September is about as good as Griffith gets. Highs average 20.9 °C, lows 6.8 °C, and rain falls on 4 days — nothing in the month is working against you.

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

Rain falls on only 4 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest September day reached 37.8 °C and the coldest night fell to 0 °C, and the wettest single day dropped 34 mm — roughly 117% of the month's rain in one day.

This is the volatile part. September rainfall has ranged from 1 mm to 122 mm across the twenty years measured — a 121 mm spread around an average of 29 mm. The average is real but almost no individual September looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 9.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 62%.

How September sits in the year

The month is on the way up: 4.4 °C warmer than August, and October adds another 4.7 °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 hours across the month. That is between Griffith'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 — 31.3 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. Within September itself the daily swing is 14.1 °C, so mornings and afternoons need different clothes.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

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

September in Griffith versus nearby

If Griffith is one option among several, the nearby comparison is worth making. Wodonga is the weaker option in September — 3.3 °C cooler, 4 days more rain. Canberra is the weaker option in September — 3.8 °C cooler, 4 days more rain.

So: September is effectively as good as it gets here — 0 points behind April, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Griffith

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