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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Briefly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Check the live forecast above before heading out, as Port Denison–Dongara’s coastal weather can shift quickly with the sea breeze. This page gives you the key details for planning your day on the Mid West coast, from fishing trips to beach walks.
What’s the typical weather pattern for Port Denison–Dongara?
Port Denison–Dongara sits on the Batavia Coast, about 360 kilometres north of Perth, with the Indian Ocean on one side and the Irwin River on the other. Summer brings hot, dry days tempered by a reliable afternoon sea breeze, while winter is mild and wetter, with north-westerly winds bringing most of the rain. The live forecast above shows the current conditions, so compare it with the seasonal averages to judge whether a change is blowing in.
How does the ocean affect the local forecast?
The coast here is exposed to swell from the west and south-west, which can make the surf choppy even when the land feels calm. Swell heights and wind direction—shown in the live forecast above—matter for boaties and fishers launching at the Port Denison boat harbour. The Irwin River estuary also moderates temperatures slightly, keeping the immediate shoreline a degree or two cooler than the inland paddocks around Dongara.
Is Port Denison–Dongara prone to severe weather?
The area can experience strong cold fronts in winter bringing gale-force north-westerlies, and occasional summer thunderstorms. Check the Severe Weather Warning page before travelling if a front is forecast.
When is the best time to visit the beach here?
From December to March, mornings are calm before the sea breeze picks up around noon. The live forecast above will show the arrival time of the seabreeze, which is ideal for windsurfing but can make swimming trickier later in the day.
Does the Irwin River affect local fog or humidity?
On winter mornings, the river can produce shallow fog that clears by mid-morning, especially when cold air sits over the warmer estuary. Humidity stays moderate year-round, rarely exceeding 70% in summer.