This is way too broad of a question. Any of the coastal hikes will accommodate campfires on the beach. You can safely have a campfire for cooking food on virtually any Crown land this time of the year, and some provincial parks allow backcountry camp fires.
Campfires in the backcountry
Use portable gas stoves for cooking instead of campfires whenever possible.
Campfires are prohibited in many backcountry areas, particularly those containing alpine and sub-alpine areas, or other sensitive environments. Refer to the specific BC Parks Protected Area web page or consult with BC Parks staff to determine whether campfires are permitted where you intend to visit.
Where campfires are permitted, use approved fire-rings or pits to build your fire.
Where campfires are permitted, and approved fire-rings or pits are not available, follow these guidelines when building your campfire:
Prepare your campfire by removing all leaves, twigs and other flammable material from an area extending at least 30 centimetres around the fire.
Be sure to scrape or dig down to mineral soil.
Build your campfires at least three metres from any log, stump, snag, standing tree or wooden structure
Campfires cannot be larger than 0.5 metres in height and 0.5 metres in diameter, or roughly a foot-and-a-half by a foot-and-a-half. People must also have a shovel or eight litres of water nearby, and build a fireguard around their campfires by scraping down to the dirt and clearing away twigs, leaves and needles.
Having a fire larger than 0.5 metres in height and 0.5 metres in diameter could result in a fine of $345.
Equip yourself with a shovel or a pail of water containing at least 8 litres and keep near the fire at all times.
Attend your campfire at all times and be certain it is extinguished before leaving it. Sift the ashes with your fingers to be sure.