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Metro Vancouver weather: How long will the heat warning last?

The forecast includes temperatures that will feel as warm as 37 C with humidity.
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The seven-day Metro Vancouver weather forecast kicks off on Monday, Aug. 11, 2025, with a heat warning followed by a period of cooler, wetter conditions.

Metro Vancouverites will likely only face one more uncomfortable sleep during one of the season's few heat warnings. 

An official heat wave hasn't been declared, but Environment Canada warns of very high temperatures and a "moderate risk to public health" in the Lower Mainland. 

Meteorologist Brian Proctor says daytime highs reaching up to 33 C combined with overnight lows near 17 C pose a health risk to vulnerable populations. However, the elevated heat isn't expected to continue through the week. 

On Monday, Aug. 11, areas near the Strait of Georgia will see some reprieve from the elevated heat, with marine air moderating temperatures. In the Fraser Valley, accumulation of moisture from last week's rain, combined with active crops growing, is creating more humidity, and temperatures may feel as hot as 37 C. 

Elevated temperatures should persist through Monday night and into Tuesday, meaning temperatures may feel just as warm, or potentially warmer, during the day on Tuesday. 

Seven-day Metro Vancouver weather forecast 

A westerly wind should bring cooler weather on Tuesday afternoon or heading into the early evening, although the timing is uncertain.

"For the remainder of the work week, temperatures cool back down to seasonal, with showers and rain or periods of rain," Proctor notes. 

Environment Canada's models indicate possible significant rain later this week, potentially commencing on Friday, transitioning to showers on Saturday. However, the models don't show strong confidence. 

"For now, locals should plan for two hot days and a transition back to cooler, wetter weather." 

According to the advisory, heat poses a greater risk for "seniors, people who live alone, people with pre-existing health conditions such as diabetes, heart disease or respiratory disease, people with mental illness such as schizophrenia, depression, or anxiety, people with substance use disorders, and people with limited mobility."

Locals should check on family, friends and neighbours and ensure they have a cool space. Early signs of heat illness include feeling unwell, fatigue, thirst, headache, and unusually dark urine; these symptoms can rapidly evolve into life-threatening emergencies.


Stay up-to-date with hyperlocal forecasts across 50 neighbourhoods in the Lower Mainland with V.I.A.'s Weatherhood.