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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Monitor Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out on the water. Coffin Bay’s weather is shaped by its exposed position on the Eyre Peninsula, with sea breezes often keeping temperatures milder than inland spots like Port Lincoln.
What makes Coffin Bay’s weather different?
Coffin Bay sits on a narrow peninsula, so sea breezes arrive early from the southwest. Summer afternoons rarely hit the high 30s Celsius, thanks to that cool air off the Southern Ocean. Winter brings rain fronts from the west, with July averaging around 15°C. For a broader look at the region, check Adelaide Weather for the state’s overall pattern.
How does the wind affect your trip?
Southwest winds are the norm from October to March, gusting to 30–40 km/h by midday. This kicks up swell for surfers but makes sheltered spots like the jetty better for fishing. In autumn, morning calms give way to afternoon sea breezes—plan your launch for early. For nearby conditions, see Port Lincoln Weather or Streaky Bay Weather for coastal comparisons.
What is the best time to visit Coffin Bay for weather?
Late autumn (April–May) offers calm winds and mild 18–23°C days, ideal for oyster tours. Summer is reliable but breezy; avoid July for rain.
Does Coffin Bay get extreme heat?
Rarely. The sea breeze cuts most heatwaves short. You might see 35°C from a northerly wind, but it usually drops to 25°C by evening.
Can I fish in Coffin Bay during a south-westerly?
Yes, but stick to the lee side near the national park. The open bay gets choppy. Check the Coffin Bay weather radar for squalls.