Weather in Geraldton in August

Prime time. August is about as good as Geraldton gets. Highs average 19.2 °C, lows 16.3 °C, and rain falls on 10 days — nothing in the month is working against you.

August ranks 11 of 12 — near the bottom of Geraldton's year. January is the month that works, and the swing between the two is 19 points, which is a different holiday rather than a slightly better one. Worth keeping in perspective: August is the weakest month of Geraldton's year and it is still a perfectly good one. The downside here is small.

Rain on 10 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 August reaches 30 °C; the day barely swings — 2.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 25 °C and the coldest night fell to 12.5 °C, and the wettest single day dropped 28 mm — roughly 48% of the month's rain in one day.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 117 mm against 12 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 58 mm average is a reasonable planning figure, not a promise.

Wind sits around 19.7 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 69%.

How August sits in the year

Temperatures hold steady either side: 19.4 °C in July, 19.2 here, 19.4 in September. Nothing about the timing within the month matters much.

Daylight in August

11.1 hours of daylight, gaining 0.7 hours across the month. That is between Geraldton's extremes of 14 and 10.3 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 20.3 °C in August — swimmable, but it takes a moment to commit. The sea peaks at 23.7 °C in March and bottoms out at 19.9 °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.

August in Geraldton versus nearby

If Geraldton is one option among several, the nearby comparison is worth making. Perth is the weaker option in August — within a degree on temperature, 4 days more rain. Bunbury is the weaker option in August — 2.5 °C cooler, 5 days more rain.

So: August works, with January the better month by 17 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Geraldton

See all twelve months in Geraldton, or where else to go in August.