Full bookings, a packed cool room and a kitchen that's hotter than ever. Christmas trade is about to meet what the Bureau of Meteorology expects to be a warmer-than-average start to summer. Here's how to keep fridges, food and your team holding up when the heat hits.
Why this Christmas is different
In its long-range outlook issued on 1 October 2026, the Bureau of Meteorology says El Niño "is at near-record levels", with models forecasting it to peak in late spring or summer as a very strong event. For October to December, maximum temperatures are likely to be above average across most of the country, and the chance of unusually high maximums is over 80% across most of New South Wales, Victoria and Tasmania, as well as small parts of south-west Western Australia, eastern South Australia and south-west Queensland. Overnight minimums are very likely to be above average across almost all of Australia.
The Bureau also notes that a strong El Niño doesn't necessarily mean strong impacts on Australian rainfall and temperature. But kitchens don't need certainty to plan. Last summer showed what a bad week looks like: in early January 2026, the Bureau forecast heatwave conditions it described as the worst since the 2019–20 Black Summer, with maximums of 41°C forecast for Melbourne and 45°C for Port Pirie.
That heat arrives on top of peak trade. Roy Morgan and the Australian Retailers Association forecast $10.6 billion in hospitality spending in the lead-up to Christmas 2024, up 4.7% on the year before. More covers, more functions and more stock in the cool room, all while equipment works harder than at any other time of year.
The short version: refrigeration that copes on a 30°C day can struggle on a 40°C one, and a kitchen that's full to the doors leaves no margin. Do the checks now, before the December rush and before the first heatwave.
The numbers every kitchen should know
These are the food safety temperatures and time limits that matter most when the heat is on. They come from Food Standards Australia New Zealand (FSANZ) and state health guidance.
| Rule | What it means in practice |
|---|---|
| Cold holding: 5°C or below | Potentially hazardous food (meat, seafood, dairy, cooked rice and pasta, prepared salads) stays at or under 5°C. Hot holding is 60°C or above. |
| The 2-hour / 4-hour rule | For ready-to-eat potentially hazardous food out of refrigeration, total time between 5°C and 60°C counts, including prep and display. Under 2 hours: use it or put it back in the fridge. 2–4 hours: use it, but don't re-refrigerate. 4 hours or more: throw it out. |
| Cooling cooked food | From 60°C to 21°C within 2 hours, then from 21°C to 5°C within a further 4 hours. |
| Cooking poultry | Cook to 75°C in the thickest part, checked with a meat thermometer. |
| Thermometers | Any premises handling potentially hazardous food needs a probe thermometer accurate to ±1°C. |
Heat makes every one of these harder. Food on a pass or buffet warms faster, a crowded fridge recovers more slowly after each door opening, and large batches of Christmas ham, turkey or gravy take longer to cool.
Fridge and cool room heat-check
Every commercial fridge is designed to work up to a certain room temperature. Many manufacturers show this as a "climate class". Under the European energy label for professional storage cabinets, for example, climate class 4 ("light duty") means the cabinet is tested in a 30°C room at 55% humidity, while climate class 5 ("heavy duty") means a 40°C room at 40% humidity. Display fridges use a different scale, and not every unit lists a class at all. A kitchen behind a hot cooking line on a 40°C day can push a unit past the conditions it was designed for.
Check this before December
- Find each unit's rating on its rating plate or in the manual (or ask your supplier for the maximum room temperature it's designed for), and note which units sit closest to ovens, fryers or a west-facing wall.
- Clean the condenser coils and clear anything blocking the vents. Dust and grease make the compressor work harder exactly when it can least afford to.
- Give units breathing room. Check the clearance gaps recommended by the manufacturer and move boxes, bins and stock away from the vents.
- Test the door seals. Close a door on a sheet of paper; if it slides out easily, the seal is leaking cold air.
- Book a service for any unit that's running constantly, icing up or slow to pull back to temperature. Do it now rather than waiting for the first heatwave.
- Start a temperature log now, checking at least at opening and close, so you have a baseline to spot a unit that's starting to struggle.
If a unit can't hold temperature on a normal summer day, it's unlikely to survive a heatwave weekend at full capacity. When replacing equipment for a hot kitchen, check the room-temperature rating before you buy: commercial fridges rated for hotter conditions give you more headroom than light-duty models.
Peak-week prep plan
Tighten the menu
According to Restaurant & Catering Australia, more than half of Australian restaurants reduced their menu size in 2025. A tighter Christmas menu also means fewer lines of perishable stock competing for fridge space. Set menus and banquets, which R&CA flags as growth areas, make ordering and prep far more predictable.
Plan cold storage like a seating chart
- Stagger deliveries so the cool room isn't packed to the doors on a single day. Overloaded shelves block airflow and slow recovery.
- Move drinks out of food fridges and onto ice in tubs or a dedicated drinks fridge, freeing space for high-risk food.
- Label and date everything, and run first-in, first-out on every shelf.
Cool big batches fast
- Split hams, turkeys, stocks and sauces into smaller portions in shallow containers.
- Use a blast chiller if you have one, or an ice-water bath, and stir liquids like gravy often.
- Rack containers so air can circulate, and probe them to confirm you're inside the 2-hour and 4-hour cooling windows.
Heatwave-day playbook
- Check fridge temperatures more often than usual, and log them. A unit creeping above 5°C is your early warning.
- Cut door openings. Pull what the line needs for service in one go, and keep doors shut between rushes.
- Serve small and refill on buffets and displays, rather than topping up food that's been sitting out. Track the 2-hour/4-hour clock.
- Have a breakdown plan. Keep your refrigeration technician's number on the wall, know which unit has spare space, and keep eskies and ice on hand to move stock fast.
- Look after the team. A hot kitchen is hard on staff too; plan breaks, water and rotation away from the hottest stations.
If a fridge fails or the power goes out: keep doors closed, move high-risk food to working refrigeration or onto ice as soon as possible, and probe it. Food that has spent 4 hours or more between 5°C and 60°C should be thrown out. When in doubt, contact your local council's environmental health officer.
Printable heat-ready checklist
- Note the room-temperature rating of every fridge, freezer and cool room
- Clean condenser coils and clear vents
- Check clearance gaps around each unit
- Test door seals with the paper test
- Book a service for any struggling unit
- Check probe thermometers are accurate to ±1°C
- Start a twice-daily temperature log
- Lock in a tighter Christmas and set menu
- Stagger deliveries and plan shelf space
- Set up drinks on ice or in a separate fridge
- Prepare shallow containers and an ice-bath setup for cooling
- Post the 5°C / 60°C and 2-hour/4-hour rules where staff can see them
- Increase temperature checks and log them
- Minimise door openings during service
- Serve small batches and refill from the fridge
- Keep the technician's number, eskies and ice ready
- Plan staff breaks, water and rotation
This guide is general information based on the sources below. Always follow the food safety requirements of your local council and state food authority.
Sources
- Bureau of Meteorology, Australian long-range forecast outlook, issued 1 October 2026.
- ABC News, Victoria, SA, NSW brace for 'worst' heatwave since Black Summer, 5 January 2026.
- Roy Morgan and Australian Retailers Association, Christmas 2024 spending forecast, December 2024.
- Food Standards Australia New Zealand, The annual cost of foodborne illness in Australia (report by the Australian National University), 2022.
- Food Safety Information Council, Christmas and summer entertaining food safety tips, December 2025.
- Food Standards Australia New Zealand, Cooling and reheating food.
- Food Standards Australia New Zealand, Safe Food Australia, Appendix 2: Time as a control for potentially hazardous food.
- WA Department of Health, Food temperature control.
- Electrolux Professional, How to read commercial refrigerator energy labels (climate class definitions under the European label).
- Restaurant & Catering Australia, Dining in 2026: what Australian operators can expect, December 2025.
