Temperatures reached over 25C at the weekend cauging very dry conditions.
Merseyside Fire and rescue Service have shockingly revealed that they were called out to 44 grass/woodland fires.
One of the fires lasted two days on Thurstaston Hill and burnt out a large grassy area.
MFRS also revealed that 11 fires over the weekend were found to have been started deliberately by arsonists, who are now being hunted by police.
Chief Fire Officer Phil Garrigan said: “Grass fires can spread quickly and have a devastating impact on our natural environment, wildlife and public amenities.
“They also take our crews away from responding to other potentially life-threatening incidents.
“We have seen a significant increase in our attendance to grass fires in recent weeks and over the recent weekend (29th-31st May), we were called to 44 fires involving grass and woodland – 11 of which were deliberately started.
“This is arson and a serious criminal offence. These fires will be investigated by ourselves and Merseyside Police.
“We would urge parents to speak to their children about the very real consequences for them and for others.
“Of course, not all grass fires are started deliberately but the majority can be avoided.
“We understand that people want to enjoy the current spell of nice weather but this has to be done in a way that does not create risks of fire.
“We would urge the public to be especially careful in the hot weather – make sure you dispose of your rubbish and cigarettes safely.
“Don’t throw cigarette ends on the ground or out of your car window and don’t leave bottles and glass behind.
“If you were able to take items with you, you are able to take them home. People should NOT be lighting fires or taking disposable barbecues into woodland, open countryside or onto our beaches.”