Weather in Melbourne in May

A good month. May is a solid month to be in Melbourne. Highs average 16.7 °C, lows 9.9 °C, and rain falls on 12 days — nothing in the month is working against you.

May ranks 8 of 12 in Melbourne: past the worst of the year but short of January, which is the month to book if the dates are open.

Rain on 12 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16.7 °C days and 9.9 °C nights; the spread matters more here than any single number.

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 25.4 °C and the coldest night fell to 4.3 °C, and the wettest single day dropped 59 mm — roughly 98% of the month's rain in one day.

May is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest May on record still delivered 133 mm against 20 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 60 mm average is a reasonable planning figure, not a promise.

Wind is light at 11.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How May sits in the year

The month is on the way down: 3.8 °C cooler than April, with June dropping another 2.7 °C. The first week and the last are not the same trip.

Daylight in May

May sits at the dark end of Melbourne's year — 10.1 hours of daylight against 14.8 at midsummer, losing 0.8 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

An inland climate

Despite being inland, the year stays fairly even: 19.2 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

May in Melbourne versus nearby

If Melbourne is one option among several, the nearby comparison is worth making. Ballarat is close enough to be a coin toss — 2.1 °C cooler, 2 days less rain. Bendigo is close enough to be a coin toss — within a degree on temperature, 4 days less rain.

So: May works, with January the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Melbourne

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