El Niño is here, but it hasn't bitten yet

The Bureau of Meteorology declared El Niño active on 16 June. The numbers behind the call are big. The Bureau's seasonal model has it peaking late in the year at more than 3°C above normal, which would beat the record of 2.65°C set in November 1902.

The patch of tropical Pacific that forecasters watch has warmed faster this year than in any year since 1943. This is the seventh year running with either El Niño or La Niña, the longest such run since the 1970s.

For most clubs the signs turned up weeks ago. The centre of the lawn dries faster, the edges go to hardpan, and the bores run longer and longer to cover the rain that isn't coming.

Clubs on town water have started rationing their watering windows. Clubs on tank or bore are paying more in power to pump more often. The Bureau only confirms what the lawns already show: southern Queensland has been drier than average since January.

A record El Niño does not mean a record drought.

An El Niño declaration is a reading of the ocean, and not much more. It tells us the central tropical Pacific has crossed a temperature line. What it does not tell us is how much rain will fall on your lawn.

Australia sits between three oceans, and the Indian and Southern Oceans steer our weather as much as the Pacific does. Right now those other drivers are pushing the other way, which is why much of the country, Queensland included, has been wet through May and June.

The Bureau's rainfall outlook for July to September leans dry across eastern Australia. (ABC News)

That outlook leans dry, but it only leans. A dry tilt in the odds still leaves plenty of room for rain, and an east coast low can soak the place in a single week.

Where El Niño bites harder is heat. Days run warmer through winter and spring. Clear skies drop the overnight temperatures and lift the frost risk, and the fire season starts earlier and runs longer into summer. Its grip on rainfall usually loosens by the time it peaks over summer, the way the 2023 event gave way to a wet finish.

For a club, that means getting ready for a drier run into summer without betting the season on a drought that might not turn up.

The work itself is mostly unglamorous. A wetting agent before the next decent rain helps the lawn actually take it in. Mowing a little higher takes the stress off the sward. And it pays to tighten the irrigation roster so it runs at the cool ends of the day instead of burning off at noon. None of this stops the dry. It does slow the damage.

The most useful thing any club can do is compare notes. A watering routine that carried one club's greens through a dry autumn is worth a lot to the club down the road, and what holds up in Brisbane might do nothing in Cairns. If yours has hit on something that worked this season, the CAQ office and ClubHub want to hear it.

None of this is cause for panic. Do the basic lawn work, watch what the forecast actually says as winter goes on, and stay in touch with other clubs about what's holding up. A dry summer is far easier to manage when nobody is working it out on their own.

Sea-surface temperature globe and rainfall outlook graphics: ABC News.