Australian Weather

19 Jun 2026, 4:28AM UTC

Winter has failed to show up in Sydney so far this month, with the city registering its longest run of June days over 20°C in close to 170 years of records. A string of high pressure systems and a lack of strong cold fronts have kept daytime temperatures unusually high in Sydney and other areas of NSW so far this month. The long-term average maximum temperature at Sydney’s Observatory Hill weather station, located next to the Harbour Bridge, is around 17°C. This month, it has been running at around 21°C and the coldest day managed to reach 18.2°C. Image: Modelled 850 hPa temperature and mean sea level pressure over Australia on Thursday night, showing a high pressure system directing warm air across NSW. Source: Weatherzone. Longest run of June days over 20°C Today, Friday June 19, marks the 13th consecutive day above 20°C at the Observatory Hill weather station. This easily beats Sydney’s previous June record of nine days in a row above 20°C from 1919, with data available back to 1859. Sydney is expected to extend this record-breaking run to 14 days on Saturday, before slightly cooler conditions develop from Sunday, possibly ending the streak. Looking ahead, southerly winds should keep temperatures below 20°C throughout most of next week, with maximums forecast to sit around more typical June highs of 17 to 19°C. Another record possible by month’s end There are early signs that some warmer weather will return towards the end of next week, possibly bringing a few more days over 20°C in the final days of the month. The record for the most 20°C days in a single June was 18 in 1957. This month has already had 14 days over 20°C (which includes the current 13-day streak) and should have its 15th on Saturday. With more days over 20°C possible from late next week, there is a chance this month will challenge the record from 1957.

19 Jun 2026, 3:19AM UTC

Wintry weather will finally return to eastern Australia after a remarkable run of June warmth. Since the start of winter, maximum and minimum temperatures have been running at around 2-3 degrees above average in Melbourne, Sydney, Adelaide, Hobart and Canberra, with the southeastern corner of the country experiencing the biggest warmth anomalies. Of the capitals, only Perth has had a cool start to the season, due to cold fronts tending to peak in the southwest of the continent rather than the southeast. But this weekend, a cold front will cool things down over much of eastern Australia. Showery weather and blustery winds can be expected for at least part of the weekend in Melbourne, Adelaide, Canberra, and Hobart, while Sydney should see its first day below 20°C in two weeks on Sunday despite remaining mostly dry. A relatively weak cold front, but enough to cool things down Image: Four-hour combined satellite and radar loop on June 19, 2026, showing cloud streaming towards the east coast from the northwest in the mild airstream ahead of the front, while cold air pushes onshore to SA and western Vic from the south. Source: Weatherzone. As winter cold fronts go, this system is not a particularly vigorous or chilly system, although wild winds have announced its arrival. As often happens, winds have been strong in the mild northwesterly airstream ahead of the front, with gusts of 120 km/h or slightly stronger recorded on Thursday in the New South Wales and Victorian alpine region. Less blustery conditions will set in as the coolest air pushes east on Saturday and Sunday. In terms of temperatures, the cooler air will bring maximum temperatures much closer to the long-term June average across a wide area.  Expected maximums for the capital cities this weekend Perth Expect maximums of 18°C and 19°C on Saturday and Sunday respectively, continuing the cool week in southwest WA. Perth’s average June maximum is 19.5°C. Adelaide After a warm start to the week with two days topping 20°C, Adelaide cooled down on Thursday with a maximum of 15.5°C. Expect tops around 15°C both days this weekend. The average June maximum is 15.8°C. Melbourne The Victorian capital has also had a warm week, with a rare 20-degree June day on Wednesday, followed by its highest June minimum on record on Thursday morning. The weekend will be much cooler, with expected highs of 14°C both days. The average June maximum is 14.1°C.  Sydney The harbour city hit 20°C before midday this Friday, which made it 13 straight 20-degree days (or warmer). Expect 21°C on Saturday before a maximum of 19°C on Sunday. The average June maximum is 17°C. Canberra After an unseasonably warm week with two 18-degree days, the national capital will feel more like its usual wintry self this weekend, with expected tops of 14°C and 13°C on Saturday and Sunday respectively. The average June maximum is 14.1°C (interestingly, that’s the same as Melbourne’s). Hobart Expect maximums of 12°C on Saturday and 13°C on Sunday in Hobart, after a week of fluctuating temperatures which included a near-record June high of 20.3°C last Saturday. Hobart’s average June maximum is 12.1°C. Brisbane The Queensland capital has seen just one day with a maximum below 20°C so far this winter, but that could change this weekend, when after a sunny Saturday with a top of 24°C, grey skies and showers could see the mercury peaking at just 19°C on Sunday. The average June maximum is 22.0°C. Darwin Darwin will be doing typical Darwin dry season things, with sunny skies and maximums around 32°C on both Saturday and Sunday. The average June maximum is 30.8°C. Wherever you are this weekend, we hope it’s a good one. And for those scanning the skies for snow, expect a few flakes this weekend with accumulations of a few centimetres likely at higher elevations. It won’t be a big season-starting snow dump, but at least there should be a good snowmaking window of cold, crisp nights for several days next week. Please check the Weatherzone snow page for the latest alpine conditions and forecasts. READ MORE: Snowmaking begins in Australia, but how does it work?