Brisbane is in for several sweltering days with temperatures in the high 30s, as extreme heat from Queensland's west makes its way to the south-east.

The Bureau of Meteorology has predicted temperatures of up to 35 degrees Celsius across Brisbane today, with the mercury expected to rise to 39C in Ipswich.

Yesterday, it reached 42.8C in Birdsville, breaking the state's September record.

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BOM senior meteorologist Steven Hadley said the Brisbane heat was a combination of north-westerly winds moving out from the interior and no cloud cover.

"We're going to see temperatures into the mid to high 30s across many parts of south-east Queensland," he said.

"It's quite similar to what we see in the summer months, so most people are used to dealing with this kind of heat in Queensland, although it is highly unusual for the time of year."

Temperatures along the coast are expected to be lower compared to inland regions.

UV levels will be very high

BOM has predicted UV levels around the city will be very high.

Cancer Council spokeswoman Laura McCoy said it was an important reminder for people to take care of their skin.

"The higher the UV index, the greater risk of skin damage and really getting sunburnt, which later in life can increase risk of skin cancer significantly," she said.

"If they do need to head outside just make that you're really using different methods of sun protection."

Ms McCoy said some groups were particularly vulnerable.

"Especially for kids that are out there on school holidays might be heading to the beach and might be playing in the pool … it's critical to avoid being outside during those peak times during late morning, even early afternoon," she said.

"When the UV is that high you can get burnt in just a couple of minutes."

Electricity network ready, Government says

Energy Minister Mark Bailey has assured residents Queensland's electricity network is ready for the heat over the next few days.

Electricity in the state is generated through a mix of baseload coal-fired, gas, hydro, wind and solar.

In a statement, the Minister said Queensland's supply was "secure and predicted to meet peak demand in all forecast scenarios for many years to come".