Australian Open braces for 45C heat as quarter-finals confront safety and scheduling test

Organisers activate protections as temperatures threaten historic mark

Australian Open officials are enacting wide-ranging safeguards with Melbourne forecast to reach 45C (113F) on Tuesday, January 27 (local time), a spike that could challenge the city’s record 46.4C (115.5F) set in 2009. With player and spectator welfare paramount, tournament planners have already introduced schedule adjustments and on-site measures designed to keep the grand slam moving without compromising safety, under the broader health and safety obligations set by Victoria’s occupational health laws and emergency management framework.

How the heat policy will be applied

Play will begin on Rod Laver Arena at 11.30am with women’s world No.1 Aryna Sabalenka facing Iva Jovic, and the roof is likely to be open at the start. Crucially, that approach allows play to commence on outdoor courts under the current policy before conditions intensify. Officials expect suspensions later in the day as the Heat Stress Scale (HSS) rises, with decisions on outside-court play and roof closures on the main arenas made in line with the Australian Open’s Extreme Heat Policy and the tournament’s formal Extreme Heat Protocols.

Introduced in 2019, the HSS combines four climate inputs-air temperature, radiant heat, humidity and wind speed-measured across Melbourne Park. The five-level scale runs from routine heat management to the most severe conditions, where play on outside courts is suspended and roofs must be closed on arenas once the index reaches its upper threshold.[1] As readings escalate, protocols trigger incremental responses, from additional cooling breaks and extended changeovers to halting play outdoors and closing roofs on the show courts.

Competitive landscape: who plays when-and why it matters

Scheduling is central to competitive balance in extreme heat and has become a recurring governance question for the sport each Australian summer. Early starters can face drastically different conditions from those on court after sunset, influencing ball speed, court pace and physical toll. Roof closures create more consistent, indoor-like environments that can alter tactics and neutralise some advantages of heat-hardened players, while outdoor suspensions compress the order of play and recovery windows between matches.

• From 11.30am (Rod Laver Arena): Aryna Sabalenka vs Iva Jovic.
• Followed by: Alexander Zverev vs Learner Tien in a last-eight matchup.
• Night session from 7pm: Women’s seeds Coco Gauff and Elina Svitolina open the evening program.
• Later: Australia’s Alex de Minaur meets world No.1 Carlos Alcaraz.

For players navigating title bids, these time slots matter. Extended delays or roof changes can reshape match rhythm, recovery ahead of the semi-finals and even training plans, especially with differing formats-best-of-three for women’s singles and best-of-five for men’s singles-asking distinct physical questions in heavy conditions. Tournament officials, broadcasters and player entourages will be closely tracking the HSS readings as they intersect with these marquee time slots.

Players adopt pragmatic approach

Alex de Minaur, seeded sixth, is unconcerned by the forecast. “I mean, I’m Aussie. I don’t mind the heat,” the 26-year-old said. “I have said it since day one. That’s just what I have grown up with, and I’m ready for these types of conditions.

“I assume the roof will be closed. I don’t know for certain, but if the heat rule is into effect, it’s going to make it a little bit of an indoor match.

“Hey, it is what it is. I mean, once I rock up on Tuesday and I walk on court, you just deal with whatever’s in front of you.”

Carlos Alcaraz is taking a similar view. “Whatever it is, I just will be ready,” he said. “I will be focused. I will try not to think about it. I will try not to affect my game at all, and I think that’s it.”

Elina Svitolina, into the quarter-finals for a second straight year, is counting on the evening slot to moderate conditions. “It’s of course better to play in the evening. It’s much nicer,” she said. “Of course, still the ball is flying quite a bit because of the heat, but yeah, it’s going to be fine either way.”

Publicly, players are framing the heat as an uncontrollable variable, but privately their teams are adjusting hydration strategies, pre-match warm-ups and between-point routines to reflect the likelihood of on-and-off play and potentially long waits in cooled locker rooms.

Measures for fans, officials and ballkids

Organisers have confirmed practical steps across the precinct, mindful that duty-of-care obligations extend beyond the locker room. Ground pass ticket holders will be granted access to Margaret Court Arena for additional shaded seating and climate control. Ballkids will operate on reduced rotations with longer recovery and extra relief squads to limit exposure. Umpires and line officials are being cycled more frequently, with additional shaded rest areas set aside between matches.

The AO wheelchair championships have been postponed to begin on Wednesday, a decision that underlines the event’s responsibility to protect higher-risk athletes in line with its own medical criteria. Extreme heat protocols were already enacted on Saturday, when outdoor play was suspended and roofs closed on the major venues, offering a live test of the systems and communication channels that will be relied upon again if Tuesday peaks as forecast.

Operational and commercial stakes

Tuesday’s peak heat threatens to stress the tournament schedule and broadcast windows. Any sustained suspension of outside courts increases reliance on roofed arenas to keep the program on track, potentially condensing later rounds and compounding recovery challenges. Night sessions could creep later into the evening if earlier delays stack up, reviving long-running debates about player welfare and the tournament’s late-finish culture.

For ticket-holders, expanded indoor access is designed to manage crowd flow and provide heat relief without emptying the grounds. For broadcasters and sponsors, the aim is to protect prime-time slots and global audiences while demonstrating that the event can operate safely under what amounts to climate stress-testing of one of tennis’s four biggest properties.

Context for Melbourne’s temperature spike

Should temperatures climb as forecast, Tuesday could approach the highest reading on record for Melbourne since 2009, when the city reached 46.4C, the benchmark for the Victorian capital. That historical backdrop underscores why the tournament has hardened its heat protocols and refined real-time monitoring at Melbourne Park, in consultation with meteorological advice and public health guidance.

For international viewers, understanding the city’s temperature profile helps explain both the day’s competitive calculus and the robust contingency planning now embedded in the event’s operations. The Australian Open’s evolving heat rules sit within a broader, climate-conscious shift in how major events in Australia plan for extreme weather, and will likely inform similar frameworks at other summer tournaments as the sport confronts more frequent days at the edge of safe play.