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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Focus Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Mornington’s weather is shaped by its position on Port Phillip Bay, producing mild, maritime conditions with fewer extremes than inland Victoria. The live forecast above shows today’s conditions for this coastal town.
What drives Mornington’s local climate?
The bay moderates both heat and cold, keeping summer highs typically below 30°C and winter frosts rare. Sea breezes arrive most afternoons from late spring through autumn, dropping temperatures by several degrees near the shore. Mornington also sits in the rain shadow of the Otway Ranges, so it receives less rainfall than areas further west on the peninsula.
- Summer (Dec–Feb): average maximum 24–26°C, low humidity when sea breezes develop
- Winter (Jun–Aug): average maximum 13–14°C, morning fog often clears by midday
- Spring and autumn: the most settled windows for outdoor plans, with light winds
- Rainfall spread fairly evenly year-round, with a slight winter peak (about 50–60mm per month)
How far ahead can you plan around Mornington weather?
The 7-day forecast from the Bureau of Meteorology is reliable for general trends, while the mornington weather 14 days outlook gives a useful indication of pattern shifts. For longer-range planning, the mornington weather 21 day forecast can highlight broad synoptic changes but expect lower confidence beyond two weeks. Hourly details, such as the mornington weather hourly breakdown, are most accurate within the next 48 hours and help time outdoor activities around sea breezes or showers.
How does Port Phillip Bay influence Mornington’s temperature?
The bay acts as a thermal buffer: it cools summer afternoons with onshore breezes and releases stored heat on winter nights, keeping minimums higher than inland towns like Cranbourne or Pakenham.
Is the bom mornington weather page the most reliable source?
Yes, the Bureau of Meteorology provides official observations and forecasts for Mornington. It’s the best source for current conditions, warnings, and the mornington weather 7 day forecast.
When is the best time of year for clear skies in Mornington?
Late summer and early autumn (February to April) typically deliver the highest proportion of fine, settled days with light winds and minimal cloud, ideal for beach and bay activities.
Sources
For broader conditions across the state, visit the Australia weather hub or the Melbourne Weather page for regional context.