Australia Snow Forecast: Up to 20 cm by Wednesday

Snowfall forecast map — Credit: NOAA/NCEP GFS

Australia’s snow forecast keeps dense snow showers and powerful alpine winds in play through early Wednesday before a milder, mainly dry stretch. The ongoing system should favor Tasmania, especially Mount Mawson, while mainland accumulations stay modest and uneven. Lift-served skiing is available across much of the region, but terrain remains limited at several resorts and Mount Mawson is still on hold for insufficient cover. Wind may interrupt exposed lifts through Tuesday even where terrain is open.

The system already underway across much of the region continues through Tuesday night, with the last showers fading early Wednesday. The individual models converge on that timing, lowering snow levels and significant wind impacts, but diverge on snowfall intensity from one range to another. Mainland snow levels generally sit near 1,500-1,900 meters Monday, then fall toward 1,100-1,500 meters late Tuesday; Tasmania runs colder, broadly 500-1,500 meters while snow is falling. Snow ratios around 4-8 favor wet, dense, heavily wind-affected snow rather than powder. Sustained winds of 60-100 km/h and gusts of 100-170 km/h are possible on exposed terrain. Confidence is highest from Monday morning through early Wednesday.

Wednesday afternoon through Sunday looks mainly dry, with the individual models converging on little or no additional snowfall and a notable warm-up. Mountain temperatures generally climb into the 4-10 C range during the day from Thursday through the weekend, so the dense new snow will settle and soften where sun reaches it. Winds ease sharply Thursday, although the models diverge on the strength of a brief westerly increase Friday. Limited natural coverage will remain a constraint at lower and partially open areas, while the best preserved snow should stay on higher, sheltered terrain.

Stronger westerly winds may return Monday, July 20, but the next credible snow chance remains speculative around Wednesday into early Thursday. The individual models diverge sharply on timing, intensity, snow levels and wind impacts. The ECMWF is the clear snowier outlier, showing roughly 5-10 cm for favored mainland high terrain, while most other solutions are dry or produce only 0-3 cm. Snow levels range from below resort bases in the colder outcome to above lower slopes in milder solutions, and winds range from manageable to potentially lift-affecting. A conservative expectation is little meaningful accumulation until agreement improves.