On Friday, a 55-year-old volunteer firefighter died from injuries he sustained battling a fire in the southern region of Ilia on the Peloponnese peninsula.
Summer wildfires are common in Greece and scientists have linked the increasing frequency and intensity of extreme weather events, including heatwaves, to climate change.
But the country also has a problem with arsonists – at least 79 people were arrested last August over deadly wildfires.
Earlier this year, Greece brought in tougher arsonist laws, with perpetrators facing up to 20 years in prison and fines of up to €200,000 (£169,000; $213,850).