Toronto Pearson Airport Sets Record for Wettest Year in 2024

Back-to-back once-in-a-century storms and climate factors drove precipitation to unprecedented levels, causing significant financial impacts.

Toronto Pearson International Airport recorded 1,145 millimeters of precipitation in 2024, surpassing the previous record set in 2008 by nearly 100 millimeters.
Two massive summer storms in July and August, each with a 100-year return period, were key contributors to the record-breaking rainfall.
The storms caused over $1 billion in insured damages in Ontario, making 2024 the second-costliest summer for flooding in the province's history.
Meteorologists attribute the extreme weather to a combination of El Niño conditions and climate change, which intensify severe precipitation events.
While Pearson Airport broke records, most areas in Ontario experienced normal or below-average precipitation, highlighting the localized nature of extreme weather events.