The region has seen 38 such incidents since the start of April, with 15 recorded in Greenock alone.
Port Glasgow has witnessed 13 grass fires and Gourock has experienced ten.
Last week saw crews tackle a large grass fire at Greenock's Branchton Road, where four appliances worked to extinguish the blaze.
Crews are now urging people to help reduce the recent spike in activity.
Mark Meehan is an SFRS Station Commander for East Renfrewshire, Renfrewshire and Inverclyde.
He said: "We've witnessed a number of high profile grass fires across the area in recent weeks.
"During these unprecedented times, there's no doubt this is a challenging period for emergency services.
"Outdoor fires have the potential to spread quickly and can cause significant damage to buildings and areas of nature.
"These incidents can draw significant resources and, while we continue to be there for the people of Scotland, we'd urge people of all ages to help us reduce risk.
“Human behaviour can significantly lower the chance of grass and woodland fires starting, so it is crucial that people act safely and responsibly in rural environments, and always follow the countryside code.”