Weather in Geraldton in May

Prime time. If you get to pick your dates, May is the one. Highs average 22.4 °C, lows 19.1 °C, and rain falls on 7 days — nothing in the month is working against you.

May ranks 9 of 12 in Geraldton: past the worst of the year but short of January, which is the month to book if the dates are open.

Rain on 7 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: it never really gets hot: not one day in an average May reaches 30 °C; the day barely swings — 3.3 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest May day reached 27.5 °C and the coldest night fell to 14.5 °C, and the wettest single day dropped 44 mm — roughly 80% of the month's rain in one day.

May is moderately variable: 2 mm in the driest year against 130 mm in the wettest, around an average of 55 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind sits around 19.1 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 67%.

How May sits in the year

Temperatures hold steady either side: 23.9 °C in April, 22.4 here, 20.7 in June. Nothing about the timing within the month matters much.

Daylight in May

May sits at the dark end of Geraldton's year — 10.7 hours of daylight against 14 at midsummer, losing 0.6 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 23.1 °C in May — comfortable for a proper swim. 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

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

May in Geraldton versus nearby

If Geraldton is one option among several, the nearby comparison is worth making. Perth is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Bunbury is the weaker option in May — within a degree on temperature, 5 days more rain.

So: May works, with January the better month by 11 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 May.