Westie Rain Jackets: Check Both Fit and Documented Weather Claims
Choosing a rain jacket for a Westie takes two separate checks. First, the jacket's own size chart has to match your dog's measurements. Second, the product's written information has to describe the wet weather you plan to walk in.
A breed label won't tell you the size, and the word "jacket" won't tell you a garment keeps rain out. If either check is unclear, ask the seller or pick a candidate whose details are clearer.
Check Both Fit and Documented Weather Claims
To check weather claims, read the exact product's current description for clear wet-weather wording, like "waterproof" or a stated rainy-day use. Then ask whether that use fits your walk. A garment that only calls itself a dog jacket and says nothing about rain hasn't made a weather claim, so don't assume it has. Here's one example from our catalog: the product information for our Frog Dog Raincoat describes it as waterproof and lists rainy warm-weather outings as a use. That is the product's own documented claim, so it's a starting point for comparison. It doesn't promise your dog will stay completely dry. If the wording is vague or missing, ask the seller what the jacket is made for. You can also choose a candidate that spells it out. Fit also affects how well a raincoat covers your dog, and our rainy-walk coverage checks cover belly, leg, and harness areas.
Compare the Westie's measurements with the jacket's chart
Start with the chart for the jacket you are actually considering. The AKC points out that each jacket fits a little differently, so you should follow each jacket's measurement instructions for which body parts to measure. In general, you'll need your dog's body length and the measurement around the widest part of the chest.
Measure exactly what the chart asks for, write the numbers down, and compare each one to the chart's values. If weight alone is how you've sized clothes before, it helps to measure by body dimensions instead. Our all-size guide also shows where chest, back, and neck measurements are taken.
Here is the chart for one product, our frog-print raincoat. It's an example only. It isn't a universal chart, and it isn't a size recommendation for Westies.
Size
Back length (in.)
Chest girth (in.)
XS
8
12
S
10
14
M
12
16
L
14
18
XL
16
21
XXL
18
23
You can't pick a size from this table until you have your own dog's numbers. Another jacket may use different values, or ask for different measurements.
What to do when the chart does not settle the fit
If the chart doesn't point to one clear size, the fit question is still open. Don't guess. Use these next steps:
The chart is missing or doesn't ask for a measurement you need: ask the seller for sizing guidance for that product, or choose a jacket with a more complete chart.
Your measurements point to different sizes: ask the seller which measurement matters most for that specific jacket before you order.
After a try-on:the AKC says a dog should be able to walk, run, and play comfortably. It also warns against a jacket so loose the dog could get tangled in it, so check for comfortable movement and excessive looseness. If either check fails, try a different size or another jacket.
When both gates are open, with a chart-supported size and written wet-weather claims that match your walk, you have a solid candidate. If you'd like to compare options made for the breed, start with our Westie clothes collection.
FAQs
Is a rain jacket different from a raincoat for dogs?
The names vary from seller to seller, so the label alone doesn't tell you much. Compare coverage and the written weather details for each item. Our guide on rain jacket vs. raincoat explains how they differ in coverage and harness fit.
Does "waterproof" in a description mean my Westie will stay dry?
No. "Waterproof" is the seller's claim about the garment, not a test result for your dog on your walk. Coverage, fit, and how hard it's raining all affect what stays dry.
Can I reuse my Westie's size from another brand?
Not safely. Charts differ from jacket to jacket, so a size that worked in one brand may not match another. Check your saved measurements against each new chart.
What else matters besides fit and weather wording?
Visibility, materials, and cleaning can all affect daily use. Our dog raincoat buying guide covers those points for small dogs.
About the author
Elowen Sage
Lead Pet Wardrobe StylistSmall Breed Lifestyle ExpertCozy Care Advocate
Elowen Sage brings a rare eye for texture and detail to fitwarm. As a Pet Wardrobe Stylist, she looks beyond the mainstream, curating pieces that blend gentle care with quiet luxury for small breeds. Elowen treats every garment as a hug for your pet, ensuring that style never comes at the cost of comfort.
