Weather in Kalgoorlie in May

Prime time. If you get to pick your dates, May is the one. Highs average 22.3 °C, lows 8.7 °C, and rain falls on 3 days — nothing in the month is working against you.

May is the highest-scoring month of the twelve. The nearest rival is September, and the month at the other end of the year is December.

Rain falls on only 3 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 May day reached 33.3 °C and the coldest night fell to 2.2 °C.

This is the volatile part. May rainfall has ranged from 1 mm to 46 mm across the twenty years measured — a 45 mm spread around an average of 15 mm. The average is real but almost no individual May 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 57%.

How May sits in the year

The month is on the way down: 5.1 °C cooler than April, with June dropping another 3.6 °C. The first week and the last are not the same trip.

Daylight in May

May sits at the dark end of Kalgoorlie's year — 10.6 hours of daylight against 14.1 at midsummer, losing 0.6 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

An inland climate

With no coast nearby, the year swings a fair way — 31.4 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

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.

May in Kalgoorlie versus nearby

If Kalgoorlie is one option among several, the nearby comparison is worth making. Perth is the weaker option in May — within a degree on temperature, 7 days more rain. Albany is the weaker option in May — 3.2 °C cooler, 9 days more rain.

So: May is the answer for Kalgoorlie. If it is booked out or priced out, September is the next best thing at 0 points behind, and December is the month to keep off the shortlist.

Every month in Kalgoorlie

See all twelve months in Kalgoorlie, or where else to go in May.