El Niño is back: What Australian farmers should be preparing for

El Niño conditions have returned to the Pacific, putting rainfall, crops, livestock, water supplies and bushfire conditions firmly on the agenda for Australian agriculture.

For Australian farmers, El Niño is much more than an interesting weather phenomenon occurring thousands of kilometres away.

It can influence decisions about planting, stocking rates, fodder, water, fertiliser and fire preparation.

And perhaps most importantly, it can change the value of rain.

A farm can receive a reasonable annual rainfall total and still have a difficult year if that rain arrives at the wrong time.

As Australia moves towards spring, the question for rural communities is therefore not simply whether it will rain.

It is where, when and how much.

What is El Niño?

El Niño is the warm phase of the El Niño–Southern Oscillation, generally known as ENSO.

Under normal Pacific conditions, trade winds help push warm surface water towards Australia and South-East Asia.

During El Niño those winds weaken and unusually warm surface water develops farther east across the equatorial Pacific.

That changes atmospheric circulation and the distribution of rainfall.

For Australia, El Niño has historically been associated with reduced rainfall across large parts of eastern and northern Australia, particularly during winter and spring.

It is also associated with warmer daytime temperatures across much of the country.

Neither outcome is guaranteed.

But both become more likely.

Why spring rain matters so much

Rainfall totals alone don't tell the agricultural story.

Timing matters.

For winter cropping regions, spring rainfall can determine whether promising crops fulfil their potential.

For grazing properties, it determines pasture growth and the amount of feed available heading towards summer.

For livestock producers, deteriorating pasture conditions can eventually force decisions about supplementary feeding or reducing stock numbers.

A dry spring can therefore have consequences lasting well beyond the season itself.

Soil moisture is the number to watch

One of the less visible indicators will be soil moisture.

A period of below-average rainfall does not immediately create drought if the soil profile contains substantial stored moisture.

Conversely, farms beginning spring with depleted soil moisture can become stressed relatively quickly if rain fails.

High temperatures compound the problem.

More heat means greater evaporation.

That means the agricultural consequences of El Niño can come from the combination of reduced rainfall and increased moisture loss.

Cropping consequences

Australian grain growers have extensive experience managing climate variability.

El Niño nevertheless creates additional uncertainty.

Winter crops including wheat, barley and canola can be particularly sensitive to rainfall conditions during important stages of development.

Lower yields do not necessarily mean lower farm-gate prices because reduced national production can support commodity prices.

But higher prices are of little comfort to a producer without sufficient tonnes to sell.

The financial result will vary enormously between districts and individual properties.

Livestock producers face different decisions

For cattle and sheep producers, the equation is different.

Pasture is effectively stored rainfall.

Good seasonal conditions create feed.

Poor conditions consume it.

If pasture growth slows while temperatures increase, producers may need to consider supplementary feed, stocking rates and water availability.

Waiting too long can make those decisions more expensive.

When large numbers of producers attempt to buy fodder simultaneously, prices can rise.

When large numbers attempt to sell livestock simultaneously, livestock prices can come under pressure.

El Niño can therefore affect markets as well as paddocks.

Water could become increasingly valuable

Farm dams, irrigation storages and groundwater reserves become increasingly important during extended dry periods.

The immediate position varies considerably across Australia.

Some areas may enter the developing El Niño period with useful water reserves.

Others may already be vulnerable.

What happens during spring will consequently be critical.

A few substantial rainfall events can transform conditions.

Their absence can do the opposite.

Fire preparation becomes part of farm management

Bushfire risk is another important consideration.

El Niño does not cause bushfires.

But reduced rainfall and higher temperatures can dry vegetation and increase the availability of combustible fuel.

Properties that experienced strong grass growth during previous wet periods can face an unusual problem.

Yesterday's abundant pasture can become tomorrow's fire fuel.

Firebreaks, machinery maintenance, pumps, water supplies and property access therefore become increasingly important as conditions dry.

The financial consequences can spread quickly

Seasonal deterioration does not stop at the farm gate.

Contractors can receive less work.

Machinery purchases may be postponed.

Rural retailers can experience weaker spending.

Transport volumes can change.

Fodder businesses may experience increased demand.

Banks can see greater requests for working capital.

Agricultural communities have repeatedly demonstrated their ability to manage climate variability, but preparation generally provides more options than reaction.

Don't assume drought

El Niño should not be confused with a declaration of drought.

Australia can still receive substantial rain during an El Niño.

Individual weather systems continue to occur and other climate influences can reinforce or counteract the Pacific signal.

The important point is probability.

El Niño shifts Australia's climatic odds towards particular conditions.

For farmers, that is enough to warrant attention.

The Rural Times View

Australian agriculture has always operated between the weather forecast and the balance sheet.

El Niño doesn't tell a farmer what will happen.

It changes the risks that need to be managed.

The coming months will determine whether 2026 develops into a serious agricultural weather event or simply another example of Australia's extraordinary climate variability.

For rural Australia, the sensible response is neither alarm nor complacency.

It is preparation.