Irish Water Spaniel Weight & Growth Chart

Complete weight guide with growth charts for male and female Irish Water Spaniels from puppy to adult.

Male Adult Weight
45–68 lbs
Female Adult Weight
38–59 lbs

Irish Water Spaniel Weight Overview

Adult Irish Water Spaniels typically weigh between 45 and 68 pounds, with males generally being larger than females. Males average 45–68 lbs while females typically weigh 38–59 lbs.

Weight can vary based on genetics, diet, exercise level, and whether the dog has been spayed or neutered. The growth chart below shows the typical weight progression from puppy to adult.

Growth Chart

When Does a Irish Water Spaniel Stop Growing?

Irish Water Spaniels typically reach their full adult height by 12 to 15 months and their full adult weight shortly after. Smaller individuals may continue to fill out and add muscle mass for several months after reaching full height.

Factors that influence when a Irish Water Spaniel stops growing include genetics, nutrition, and spay/neuter timing. Dogs that are spayed or neutered very early may grow slightly taller due to delayed growth plate closure.

Is My Irish Water Spaniel Overweight?

To determine if your Irish Water Spaniel is at a healthy weight:

  • Rib test: You should be able to feel the ribs without pressing hard, with a thin layer of fat covering them
  • Waist check: Viewed from above, there should be a visible waist behind the ribs
  • Tuck-up: From the side, the abdomen should tuck up behind the rib cage

If your Irish Water Spaniel is overweight, work with your veterinarian to develop a safe weight loss plan. Even a 10% reduction in body weight can significantly improve health outcomes.

Feeding Recommendation

Adult Irish Water Spaniels typically need 0.7 to 1.4 cups of high-quality dry food per day, divided into two meals. Puppies need more frequent feedings — three to four times daily until six months, then twice daily. Always provide fresh water and adjust portions based on activity level and body condition.

Weight by Age Table

AgeMale (lbs)Female (lbs)
3 months 15.4–18.6 13.0–15.9
6 months 33.8–41.0 28.7–34.9
9 months 49.2–59.6 41.7–50.7
12 months 61.5–74.5 52.2–63.4

Frequently Asked Questions

Adult Irish Water Spaniel weight varies by gender and individual build. Refer to the weight ranges above and consult your vet to determine your specific dog's ideal weight.
Most Irish Water Spaniels reach their adult weight between 12 and 24 months, depending on their size category. Larger dogs take longer to reach full size.
You should be able to feel your Irish Water Spaniel's ribs without pressing hard, and they should have a visible waist when viewed from above. Your vet can provide a body condition score.
Feeding amounts depend on your puppy's age, current weight, and expected adult size. Follow the food manufacturer's guidelines and adjust based on your vet's recommendations.
If your Irish Water Spaniel puppy isn't gaining weight as expected, consult your veterinarian. Common causes include parasites, inadequate nutrition, or underlying health conditions.