Extreme heat is having an impact on tourism in Halls Gap with the temperature reaching a top of 42 degrees on Monday, with similar conditions predicted on Friday.
Parks Victoria area chief ranger Rhonda McNeil said rangers spent the day advising campers to leave the Grampians for the day and spend their time in the towns instead.
"We are, and did yesterday ... deliver messaging to all those visitors in our park that Monday was not a day to be in the park," she said.
"The park is open, not closed - it is not a code red day. The campgrounds are still open. (But) the extreme fire danger and the unpredictability of the weather this afternoon means the park is not the place to be.
"We're encouraging all visitors to visit our rural towns and spend some time at their swimming pools and at those locations.
"Many people have taken that up; their camps are still in the camp grounds but they have headed into the towns today ... and will head back later tonight when things have calmed down.
"We're trying to help people have a good visit and continue to enjoy their stay up here, but in the park is not the place to be."
While the park remains open, some campers still chose to move into into town based accommodation.
Halls Gap Caravan Park manager Nadja Herrington said the park was filled to the brim.
"Parks Victoria have (recommended) people move out of the free camping (in the Grampians) so we've only got un-powered sites now," she said.
Ms Herrington also said there was some misinformation flying around with people calling to ask about fires in the region.
There are only two small fires in the southern Grampians region, both of which are under control and quite far from Halls Gap.
"People have called us but we're not in any immediate danger or anything," Ms Herrington said.
"We stay up on all the (emergency) apps and there are no road closures, there's no sign of smoke - I had one guy telling me the whole place was smoked out. No.
Ms McNeil said if there was a danger Parks Victoria would "absolutely close the park."
"We just strongly recommend to people (the Grampians are) not the day to be on a 40-odd degree day with erratic winds. That's not just from a fire perspective but from a heat health perspective," she said.
"But the indication is the weather should calm down in the next few days and it should be a beautiful New Year's up here."
Ms McNeil said people should monitor the Emergency Victoria app for updates on conditions, and to also check the Parks Victoria website for updates.
Halls Gap Pool facility operator Ange Leithhead said she had also heard of people saying it wasn't safe to visit the area.
"There were some days where my business suffered due to the misinformation which was spreading around," she said.
"Friends who work in accommodation places in the area said people had been ringing to either cancel or check on the status of fires, as if the whole Grampians were on fire.
"For me personally, being at the pool at Halls Gap is probably the safest place if there was a fire."
Ms Leithhead said the pool was utilised in the past by campers who were unable to get back to their camp ground due to fire activity.
"I have absolute faith in our emergency services," she said.
"In the 2006 fires, emergency services went around and spoke to the pool patrons about their options and let them know what was happening. If a fire emergency happens, everyone will be notified. Until then, people don't need to be afraid."
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