Things to take: sunscreen, glasses, hat, swimming suite, bottle of water, rain waterproof jacket and a full change of clothes.
What to wear while canoeing is important.
When the air and water are warm, simply dress for a day at the beach. Keeping in mind to wear things that protect you from the sun and keep you cool.
When the air is cool, you have to assess the conditions and your capabilities more carefully.
The key concept to bear in mind is layering. Several thin garments will keep you just as warm as a single thicker one, and are much more versatile. Remember you’ll need to think about staying cool as much as staying warm, and you can always add or subtract layers. The base-layer provides insulation and picks up perspiration and either absorbs it (like cotton or wool) or wicks it outward (like synthetic fibers). You want moisture to be wicked away. The insulating layer can be wool, fleece, or a similar material. Look for garments that are cut to allow complete freedom of movement. The outer layer protects you, the base-layer, and the insulating layer from the elements. Make sure it is both windproof and waterproof.
Footwear can range from old sneakers to hiking boots, to rubber boots.