Myth or Fact: Do Hiking Backpacks Need a Rain Cover If They're Water-Resistant?

Quick Answer

It's a myth that a water-resistant hiking backpack is enough to keep your gear dry in heavy rain. Water-resistant materials like coated polyester handle light drizzle, but sustained downpours can seep through seams and zippers. A rain cover adds an extra protective layer that's worth the small weight and cost.

You've probably heard the claim: 'My hiking backpack is water-resistant, so I don't need a rain cover.' It sounds convenient, but is it true? Let's break down the difference between water-resistant and waterproof, and whether a rain cover is a necessary piece of gear.

Water-resistant means a fabric can repel light moisture, but it's not a guarantee against heavy rain. Most hiking backpacks are made with coated fabrics that bead water at first, but prolonged exposure can overwhelm the coating. Seams, zippers, and openings become weak points where water can sneak in.

Water-Resistant vs. Waterproof: What's the Real Difference?

Water-resistant materials are treated to resist light moisture, but they are not impermeable. For example, the Wayfarer Go Pack Hiking Backpack is made of 600-denier polyester with a polyurethane coating, which helps it stand up to wear and tear and light rain. However, this coating does not make it fully waterproof—heavy rain can still penetrate over time.

Waterproof, on the other hand, means the material is designed to keep water out entirely, often with sealed seams and waterproof zippers. Most hiking backpacks are not fully waterproof because that would add weight and reduce breathability. Instead, they rely on water-resistant fabrics and a rain cover for full protection.

• Check if your backpack has a rain cover built-in or if you need to buy one separately.

When Do You Actually Need a Rain Cover?

A rain cover becomes essential when you're hiking in moderate to heavy rain, especially for multi-day trips where a soaked sleeping bag or change of clothes can ruin your adventure. Even on day hikes, a sudden downpour can leave your electronics and extra layers wet. The Rainier Outdoor Pack, with its multiple storage pockets and laptop sleeve, is great for everyday use, but those same pockets can trap water if exposed to heavy rain without a cover.

If you're hiking in dry climates or only on sunny days, a rain cover might be less critical. But weather can change quickly, and carrying a lightweight cover is a small price for peace of mind. Many covers also help protect against dirt and abrasion, adding durability to your pack.

• Consider a rain cover that fits your pack's capacity—check the volume (liters) to find the right size.

How to Choose a Backpack That Works With a Rain Cover

When selecting a hiking backpack, look for one that has attachment points or compression straps that can secure a rain cover. The Skyline 28.5L Internal Frame Pack features dual daisy chains, trekking pole attachments, and side compression straps, making it easy to attach a cover and other gear. A snug fit ensures the cover doesn't flap in the wind or trap moisture against the pack.

Also consider the pack's material and construction. The Kennebec Day Pack has a foam mesh padded backing and adjustable shoulder straps for comfort, but its fabric is not specified as waterproof. Pairing any of these packs with a rain cover ensures your gear stays dry, regardless of the pack's water resistance.

• Test your rain cover at home by spraying your pack with a hose to see if any water gets in.

Verdicts on Rain Cover Myths

• Myth: Water-resistant means waterproof: Water-resistant fabrics like coated polyester resist light moisture but can soak through in heavy rain, especially at seams and zippers. Don't rely solely on water resistance; use a rain cover for serious weather.
• Fact: Rain covers add protection and durability: A rain cover shields your pack from rain, dirt, and abrasion, extending its life and keeping your gear dry. Invest in a rain cover that fits your backpack's capacity.
• Fact: Some backpacks are easier to pair with rain covers: Packs with compression straps and attachment points, like the Skyline 28.5L, make it easier to secure a rain cover. Look for these features when buying a new backpack.

Backpack Features That Matter for Rain Protection

• Wayfarer Go Pack Hiking Backpack: Made of a 600-denier polyester with a polyurethane coating, this bag stands up to everyday wear and tear. The PU coating helps repel light rain, but it's not a substitute for a rain cover in heavy downpours.
• Skyline 28.5L: Includes dual daisy chains to attach extra gear, plus trekking pole attachment and ice axe attachment. These attachment points make it easy to secure a rain cover and other gear, keeping everything in place during wet hikes.
• Kennebec Day Pack: Features a large main compartment and a front compartment with a multitude of accessory pockets to stash electronics and smaller gear. Multiple pockets mean more zippers and seams—places where water can sneak in without a rain cover.

So, do hiking backpacks need a rain cover if they're water-resistant? Yes, especially if you hike in areas where rain is possible. A rain cover is a simple, affordable accessory that provides peace of mind and keeps your gear dry. Pair it with a well-designed backpack, and you're ready for whatever the trail throws at you.