The best time to go to Delta, British Columbia, is during the summer months, from June to September, when the weather is at its finest for enjoying outdoor activities and the region's natural beauty.
During July and August, you can expect warm, sunny days with average temperatures around 22-25°C (72-77°F). This is an ideal time for exploring Boundary Bay Regional Park, going birdwatching at the George C. Reifel Migratory Bird Sanctuary, or enjoying a round of golf at one of the local courses. The long daylight hours allow for extended sightseeing and relaxation.
For those who prefer slightly cooler temperatures and fewer crowds, late spring (May to early June) or early autumn (September to early October) are also excellent choices. In May and June, the landscape is lush and green, and temperatures are comfortably mild, around 15-20°C (59-68°F), great for cycling along the dykes or visiting local farms. September offers pleasant weather, often with a continuation of summer-like conditions, making it a great time for outdoor pursuits without the peak season bustle.
Travellers interested in whale watching tours, which typically depart from nearby Steveston, will find the summer months offer the best chances for sightings, particularly of orcas and humpback whales.