Firefighters received 16 calls when smoke was seen billowing across the Skegness beach area.
A carelessly discarded barbecue has been blamed for the blaze in North Parade.
Lincolnshire Fire and Rescue were alerted by onlookers just after 6pm and discovered a barbecue had ignited a PVC park bench and grassland.
Witnesses described seeing smoke from as far away as Burgh le Marsh. One said: “At first I thought it was fog coming in from the sea but as I got closer I could see it was a substantial fire.”
A crew from Skegness was deployed to the scene and extinguished the blaze using one hose reel. Lincolnshire Fire and Rescue tweeted: “Cause radiated heat from carelessly discarded BBQ igniting bench.”
We are grateful to reader Mark Avison who provided us with these pictures.