Edmonton sees wettest summer on record with endless rain, flooding and mosquitoes

EDMONTON – Alberta’s capital city has broken the record for its wettest summer on record days before the start of August, bringing with it flooding, show cancellations and relentless mosquitoes.

Edmonton has been saturated by 580 millimetres of rain as of Tuesday morning, beating the record set in 1953 with 417 millimetres from June through August.

“So typically, our summers, if we look at the three months of June, July and August, we see on average about 213.3 millimetres,” Brian Proctor, meteorologist at Environment and Climate Change Canada, said in an interview.

“But this year, it has been exceptionally wet and exceptionally stormy.”

Edmonton is also on track to record the wettest July — and month — on record. 

The record for precipitation for July is 282 millimetres set in 1901 and, as of Tuesday, the city has recorded 260.7 millimetres, Proctor said. 

Environment Canada has been keeping weather data from Edmonton since the 1880s.

More storms are forecast for the coming weeks in what has become Edmonton’s summer of soggy misery. Proctor said all the moisture in the area is also feeding into a cycle of thunderstorms.

“One of the things to think about for thunderstorms: moisture is like gasoline,” he said. “The more moisture you have available, the more severe the storms can be.”

Frequent intense storms have routinely flooded roads, side streets and basements, as well as cancelled shows and events.

A severe thunderstorm forced concertgoers to seek shelter at a Post Malone concert in Commonwealth Stadium on Saturday. 

The summer deluge has affected commuters. The city said Tuesday that several roads remained closed as crews worked to clean up downed trees and deal with localized flooding. 

It said a storm Monday was the city’s sixth major weather event since June.

Last month was also the wettest June on record for the city. At the end of the month, a heavy storm threatened to overwhelm storm sewers. In an emergency alert, residents were asked to limit toilet flushes and showers to prevent sewer backups.

All the water has closed visitor sites, including the Muttart Conservatory. The Telus World of Science was expected to stay closed until late this year to fix water damage.

Elk Island National Park, east of the city, closed over the weekend as crews worked to clear downed trees, fix damaged fencing and clean up debris.

The swelling mosquito population has also led to more hospital visits for children experiencing skeeter syndrome — an intense, localized allergic reaction to mosquito saliva.

Dr. Andrew Dixon, an emergency room physician at Stollery Children’s Hospital, said it has been treating five or six children a day with the condition.

He added that skeeter syndrome is more common in children and appears worse in the beginning of the season. 

“Your body kind of gets used to it over time and stops reacting as much,” Dixon said.  He said the condition isn’t dangerous and antihistamines are effective in treating it.

Mike Jenkins, a senior scientist with the City of Edmonton, said the number of mosquitoes in the city in mid-July is 15 times higher compared with this time last year.

“It’s definitely the largest number of mosquitoes we’ve had in the last decade,” Jenkins said.

“But that being said, it also has been one of our driest decades on record — until now.”

This report by The Canadian Press was first published July 28, 2026.

— With files from Fakiha Baig