Nearly 600 firefighters and 160 vehicles were dispatched late Saturday to tackle the blaze, which broke out in the afternoon in the municipality of Pedrogao Grande, about 50 kilometres (30 miles) from Coimbra, before spreading fast across several fronts.
"Unfortunately this seems to be the greatest tragedy we have seen in recent years in terms of forest fires," a visibly moved Prime Minister Antonio Costa said.
"The number of fatalities could still rise," he said at the Civil Protection headquarters near Lisbon.
Portugal was sweltering under a severe heatwave Saturday, with temperatures exceeding 40 degrees Celsius (104 degrees Fahrenheit) in several regions.
Some 60 forest fires broke out across the country during the night, with around 1,700 firefighters battling to put them out.
Secretary of State for the Interior Jorge Gomes said 43 people burned to death, mostly trapped in their cars engulfed by flames in the Leiria region. At least 59 were injured.
The flames spread "with great violence", moving out on four fronts, Gomes said. "It is difficult to say if they were fleeing the flames or were taken by surprise."
A number of villages were affected by the main fire and evacuation procedures had been put in place for some of them, Costa added. Officials were not immediately able to comment on the extent of the damage.
Spain dispatched two water-bombing planes on Sunday morning to aid the Portuguese fire service on the ground, Costa said.
He added a period of national mourning would be announced shortly.
"My thoughts are with the victims in Portugal," EU commission head Jean-Claude Juncker tweeted. "I commend the bravery of the firefighters. EU civil protection mechanism activated & will help."
Firefighters did "all they could" when faced with the blaze, he added.
Dozens of people who fled their homes were taken in by residents of the nearby municipality of Ansiao.
"There are people who arrived saying they didn't want to die in their homes, which were surrounded by flames," Ansiao resident Ricardo Tristao told reporters.
Portugal was hit by a series of fires last year which devastated more than 100,000 hectares (1,000 square kilometres) of the mainland.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
