Measure Your Dog Correctly for Proper Fit

The number one reason raincoats don't work is incorrect sizing. Take a soft measuring tape and measure from your dog's neck to the base of the tail, then around the widest part of the chest. Most brands use a size chart based on these two measurements, not just weight. We found that taking measurements when your dog is standing naturally, not stretched out, gives the most accurate results. If your dog is between sizes, choose based on chest measurement first, since too tight in the chest restricts breathing and movement more than extra room in the back.

Understand Waterproof vs Water-Resistant

Waterproof means water won't penetrate the material even under sustained pressure, like during heavy rain or if your dog lies in a puddle. Water-resistant means water beads up and rolls off, but given enough time or pressure, it will eventually seep through. For drizzle and light rain, water-resistant coats work fine and cost less. For consistent rain, regular outdoor play in wet conditions, or dogs that love rolling in wet grass, spend the extra money on truly waterproof designs with taped seams. Check the product description for mentions of taped seams and water column rating, which indicates how much water pressure the material can withstand.

Check Reflective Features for Safety

A raincoat that hides your dog in bad weather defeats the purpose if drivers can't see them in rain or darkness. Look for coats with reflective piping along the back and sides, not just a small strip on the back. During our testing, we found that reflective material on the sides matters more than back placement, since cars approach from the side on most walks. Some brands use metallic thread, while others use retroreflective coating, both of which are effective. If the coat you like lacks reflective features, consider adding a reflective harness or collar attachment to compensate.

Consider Your Climate and Frequency of Use

Dogs living in the Pacific Northwest or Northeast US will get more use from premium raincoats than dogs in dry climates. If you're buying for occasional drizzle, a budget coat that you can replace every few years makes sense financially. If you're in a rainy climate and your dog goes outside multiple times daily, investing in a durable mid-range or premium coat saves money over time. Also consider your dog's tolerance for gear, since some dogs dislike wearing coats and will resist getting dressed. In those cases, a simple, easy-on design matters more than premium features.

Dry and Store Your Raincoat Properly

How you maintain your raincoat affects how long the waterproof coating lasts. After each use, hang the coat to air dry rather than throwing it in the washer immediately, especially if it's only wet from rain. If it's muddy, rinse it with cool water and let it drip dry before storing. Wash only when necessary and use cold water with a gentle detergent designed for technical fabrics. Never use fabric softener, which clogs the water-repellent coating. Store in a dry, cool place with good air circulation, and if you notice water starting to soak in rather than bead up, you can purchase waterproofing sprays to restore the coating.

Frequently Asked Questions

Can I machine wash my dog's raincoat?
Most raincoats can tolerate machine washing on a gentle cycle in cold water, but hand washing extends the life of the waterproof coating. Use a detergent designed for technical fabrics and skip the fabric softener entirely, as it breaks down the water-repellent treatment. Check the specific brand's care tag first, since some coats recommend hand washing only. After washing, air dry completely before storing.
What size raincoat should I buy if my dog is between sizes?
Measure your dog's chest girth first and choose based on that measurement, since too tight in the chest restricts movement and breathing. Extra room in the length is less problematic than a coat that binds around the torso. Most dogs tolerate a slightly loose fit better than one that's snug, and you can use the belly strap to keep a slightly roomy coat in place.
Will a raincoat work for a dog with a thick double coat?
Yes, but you need to size up because the coat goes over the undercoat, not against skin. Measure your dog's widest point, which for fluffy dogs is often at the coat, not the body. A coat that fits correctly won't compress the undercoat, which is what keeps your dog warm. Some brands run roomy by design, which works better for thick-coated dogs than brands that fit close.
How do I know if a raincoat is actually waterproof?
Look for taped seams, which seal the stitching holes where water can leak through. Check the water column rating if listed, which measures how much pressure water can exert before penetrating the material. A higher number is more waterproof, with 3000mm being a solid waterproof threshold. Read owner reviews specifically asking about heavy rain performance rather than drizzle, since that's the real test.
Do raincoats work for all dog breeds and sizes?
Raincoats work well for most dogs, but breeds with very short legs or low belly profiles may need custom options. Bulldogs and corgis often need wider, deeper coat designs, while long-haired breeds need roomy fits. Very small dogs sometimes have trouble finding good sizing below XS. If your dog is an unusual size or shape, look for brands with extended size ranges and read reviews from owners with similar breeds.

Bottom Line

The Ruffwear Sun Shower Rain Jacket is our top pick because it delivers premium waterproofing, excellent visibility, and reliable performance in real rainy conditions without being overly complicated to put on. The PAWZ Water-Resistant Dog Coat is our runner-up for owners who want strong performance at a more accessible price point. Pick the Ruffwear if you live in a rainy climate and use the coat regularly, or choose the PAWZ if you want solid protection for occasional wet weather without spending premium dollars.

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