Winter may be a time when many landowners conduct burn-offs, but the ongoing drought and gusty winds have seen many fires quickly get out of control.

On Tuesday a pile burn escaped containment lines at Wiagdon north of Bathurst and on Sunday a spark from a lawnmower ignited a grass fire in Eglinton.

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At Glen Alice on Saturday a campfire that was not extinguished properly reignited and spread leaving firefighters scrambling to get the 47 hectare blaze under control.

"We usually don't get these type of fires starting until December, January, February," NSW RFS Chifley/Lithgow Team operational officer Brett Taylor said.

"Even in the low temperatures now it doesn't take much for it [the fire] to go off."

RFS Inspector Mick Holland said due to the current very dry conditions, land holders were urged to burn off only if "absolutely necessary".

"The conditions are very deceiving at the moment and should not be taken for granted because it is still winter," he said.

"The wind may be light in the morning, but it has been deteriorating rapidly during the day and has caught some experienced land owners unaware."

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RFS group officer Maurice McMillen said Tuesday's out-of-control grass fire at Wiagdon ignited after a gust of wind swept up a pile burn on a property.

"They [the owner] just picked the wrong time of day and had a gust of wind go through and it just took off," he said.

"They weren't prepared, they had a water cart but it was too far away.

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"People just don't realise just how dry it is."

Meanwhile, bushfire danger period in the Bathurst, Lithgow and Oberon local government areas will commence on Sunday, September 1, which is one month earlier than usual.

For further information on how you can protect your property, or to download a Bush Fire Survival Plan, visit the NSW RFS website or call 1800 NSW RFS (1800 679 737).

For information on current fires, download the NSW RFS Fires Near Me app to your phone or tablet.