The best time to go to Nottawa, Ontario, is during the summer months, from June to August, and the early autumn, specifically September and October.Summer in Nottawa offers the warmest weather, with average daily temperatures around 20-25°C. This period is ideal for enjoying outdoor activities, such as exploring the local walking trails, cycling along the quiet country roads, or visiting nearby attractions like the Nottawasaga Lookout Provincial Park. The days are long, allowing for extended time outdoors.Early autumn is another fantastic time to visit, especially for those who appreciate natural beauty and cooler temperatures. September and October see the Nottawa area transform with stunning fall foliage. The air is crisp, with average temperatures ranging from 10-18°C, making it superb for scenic drives, hiking, and enjoying the local harvest festivals.