What typically happens in strong El Niño years across the southwest of WA, translated into what it might actually feel like on the ground in Dawesville, Mandurah, the Peel region & the wider coastal corridor. A bit of citizen science for you, compare in a year's time to see how accurate it is.

April

• Rainfall begins later than usual.
• More warm, dry days compared with a normal April.
• Cold fronts weaken or break apart before reaching the coast.
• Soil moisture remains low, making early plantings struggle.
• Local feel: Still feels like late summer; the estuary stays warm and dunes remain dry.

May

• The usual “break of season” often arrives late or weak.
• Below-average rainfall is common.
• Easterly winds become more frequent.
• Nights cool down, but days stay mild and dry.
• Local feel: A few teasing fronts appear, but none deliver a proper soaking.

June

• The winter pattern tries to establish but remains inconsistent.
• Fewer strong westerlies reach the southwest.
• Rainfall becomes patchy and unreliable.
• Clear days are more common than usual for June.
• Local feel: Cool mornings without the deep winter dampness normally expected.

July

• Typically the wettest month, but significantly drier during El Niño years.
• Storms that do arrive are short, sharp and windy.
• Long dry spells occur between fronts.
• Local feel: Bushland and verges miss their winter recharge; the estuary stays clearer and warmer.

August

• Another month of below-average rainfall.
• More easterlies and fewer large winter storms.
• Soil moisture begins dropping earlier than normal.
• Local feel: Early hints of spring; dunes dry out quickly.

September

• Warm, dry and windy conditions dominate.
• One of the most noticeable El Niño months.
• Early heat spikes are common, often reaching 28–32°C.
• Fire danger increases rapidly.
• Local feel: Feels like early summer; wildlife browsing increases as natural food dries out.

October

• Hotter than normal for early spring.
• Very dry conditions persist.
• Strong easterlies dominate the month.
• Fire risk remains high.
• Gardens and young plantings struggle without support.
• Local feel: The classic “hot, dry, windy” Dawesville spring — intensified.

November

• Consistently warm to hot conditions.
• Almost no meaningful rainfall.
• Marine heatwave risk increases.
• Estuary oxygen levels begin to drop.
• Local feel: The estuary feels “soupy” on still days; dunes become powder-dry.

December

• Hot spells arrive early and last longer.
• Very dry conditions continue.
• Bushfire risk peaks.
• Sea breezes arrive later in the day.
• Local feel: A harsher start to summer; heatwaves feel more humid due to warm ocean temperatures.

Impacts on Dawesville’s Natural Systems

Dunes

• Earlier drying leads to increased sand movement.
• Higher foot-traffic impact on fragile dune faces.
• Greater erosion risk on exposed areas.

Estuary

• Warmer water increases algal bloom risk.
• Lower oxygen levels raise the potential for fish kills in late summer.
• Reduced winter flushing leads to nutrient build-up.

Corridor Plantings

• Drought-hardy species become essential for survival.
• Higher mortality rates for new plantings.
• Increased wildlife browsing pressure.
• Watering support needed longer into spring.

Community Considerations

• Earlier fire-season messaging is required.
• Heatwave preparedness becomes more important.
• Waterwise gardening practices help reduce stress on local vegetation.
• Regular estuary care reminders support community awareness.