Ottawa Bask in a Late Summer Heatwave: Enjoy Over 20°C All Week!
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- September 15, 2025
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Ottawa is bracing for an absolutely splendid conclusion to summer, with a forecast that promises an extended stretch of glorious sunshine and delightfully warm temperatures. Residents can look forward to a full week where the mercury consistently climbs above the 20°C mark, offering a perfect opportunity to soak up the last vestiges of the season before autumn officially arrives.
According to CTV News Ottawa's weather specialist, the city is set for an unseasonably warm period, defying the typical end-of-summer chill.
This means plenty of chances to enjoy outdoor activities, from patio dining to strolls along the canal, all under a benevolent sun.
The week kicks off on Monday with mostly sunny skies and a comfortable high of 24°C, feeling even warmer with a humidex reading of 28. It's an ideal start to what promises to be a fantastic weather week.
Tuesday follows suit with brilliant sunshine, pushing temperatures to a pleasant 23°C.
The clear skies and gentle warmth will make for an inviting atmosphere across the capital.
Midweek sees a slight variation, with Wednesday offering a mix of sun and cloud, yet maintaining the warmth with a high of 24°C. The conditions remain perfect for enjoying the city's parks and outdoor spaces.
As we approach the end of the work week, Thursday shines bright again with sunny conditions and another high of 24°C, solidifying this period as a true Indian Summer experience.
Friday will feature a mix of sun and cloud, with temperatures still generous at 22°C, ensuring the warm trend continues right up to the weekend.
Even as fall officially begins on Saturday, September 23rd, Ottawa won't be plunging into chilly autumn air just yet. The first day of fall brings a chance of showers, but temperatures will remain remarkably mild at 21°C.
And to round out the beautiful weather, Sunday is forecast to be sunny with a high of 21°C, ensuring the warmth extends well into the new season.
This extended period of above-average temperatures provides a wonderful opportunity for Ottawans to savour the late-summer ambiance and transition gently into autumn, making the most of every sunny moment.
.Disclaimer: This article was generated in part using artificial intelligence and may contain errors or omissions. The content is provided for informational purposes only and does not constitute professional advice. We makes no representations or warranties regarding its accuracy, completeness, or reliability. Readers are advised to verify the information independently before relying on