The best time to go to Whitby, Ontario, is during the summer months, from June to August, when the weather is warm and conducive to outdoor activities.During this period, the average daily temperatures range from 20°C to 27°C (68°F to 81°F), making it comfortable for exploring the waterfront along Lake Ontario or enjoying the town's parks. The longer daylight hours also allow for extended enjoyment of local attractions like the Whitby Harbour and the various trails. Families will find this time particularly suitable, as school is out and there are often community events and festivals happening.Another excellent time to visit is in the early autumn, specifically September and early October. The temperatures are still pleasant, averaging around 10°C to 20°C (50°F to 68°F), and the fall foliage around the Lynde Shores Conservation Area offers picturesque scenery.