A long morning at Redhead, a first surf lesson, a backyard pool session - these are exactly the moments parents ask, when should kids wear rashies? The short answer is: more often than not. A good kids’ rashie is simple gear that protects young skin from the sun, reduces rubbing from boards and sand, and helps children stay comfortable when they would rather be catching waves than reapplying sunscreen.
That said, not every rashie is built for the same job. The best choice depends on UV levels, water temperature, how long your child will be outside and whether they are swimming, surfing, paddling or just digging holes in the sand.
When Should Kids Wear Rashies?
Kids should wear a rashie whenever they will spend extended time outdoors around water, particularly between late morning and mid-afternoon when UV can be fierce. In Australia, that can mean a bright January beach day, but it can also mean a cool, cloudy morning when the sun does not feel especially strong. UV does not need warm weather to cause trouble.
For a quick dip close to home, a rashie may be optional if your child is covered with broad-spectrum sunscreen, a hat and regular shade breaks. But for a beach day, holiday, nippers session or surf lesson, a rashie is one of the easiest ways to add dependable coverage without turning getting ready into a battle.
They are especially handy for kids who hate the feel of sunscreen, miss spots on their shoulders, or are too busy playing to stop for frequent reapplication. Think of it as a backup layer, not a reason to skip sun safety altogether. Sunscreen still belongs on exposed areas such as the face, ears, neck, hands, lower legs and feet.
For surfing and bodyboarding
A rashie earns its name in the surf. Lying on a board and paddling can cause chafing across the chest, tummy and underarms, particularly for groms learning to catch their first whitewater waves. A fitted rashie creates a smooth barrier between skin and board, and between skin and a wet suit if the water is cool enough to need one.
For warmer water, a short-sleeve or long-sleeve rashie with boardshorts or swim bottoms is often all a young surfer needs. On cooler days around Lake Macquarie or Newcastle, it works well as a layer under a steamer. Just make sure it is not too loose, as excess fabric can bunch under a wetsuit and feel uncomfortable.
For swimming, pools and holiday days
Chlorine, saltwater, hot sand and hours in the water can all be tough on young skin. A rashie helps during pool sessions too, especially at outdoor pools with limited shade. If your child is jumping in and out all day, a lightweight, quick-drying style keeps them covered without feeling as heavy as a cotton tee.
At the beach, long sleeves give more protection over the shoulders and arms, where kids often burn first. A high neckline is another small detail that makes a real difference, particularly when they are floating, paddling or boogie boarding with their back to the sun.
Sun Protection Matters Even on Cloudy Days
Many parents pack a rashie for blazing summer conditions but leave it behind when the sky turns grey. That is a common trap. Australian UV levels can still be high through cloud cover, and reflected light off water and sand adds to the exposure.
Check the daily UV forecast, but use common sense as well. If your child will be outdoors for more than a short spell, a rashie is worth having in the beach bag. It is also useful in spring and early autumn, when the air can feel mild but the sun still has plenty of bite.
Look for a garment with a stated UPF rating, ideally UPF 50+. UPF describes how much ultraviolet radiation the fabric blocks. It is a practical feature, but coverage still counts. A UPF 50+ long-sleeve rashie protects more skin than a short-sleeve one, while a cropped or very loose fit can leave gaps where sun reaches the torso.
Choosing the Right Rashie for Your Child
The right rashie should let kids move freely, stay put in the water and feel comfortable enough that they do not try to pull it off after ten minutes. That sounds obvious, but fit is where many beach-day dramas begin.
A surf rashie should sit close to the body without restricting shoulders or making breathing feel tight. If it is too baggy, it can balloon in the water and ride up when they paddle. If it is too tight, it can rub at the underarms and neck, and will be harder to take off when wet. Have your child lift their arms, twist and pretend to paddle when trying one on.
For little ones spending most of the day splashing at the shoreline, a looser sun shirt can be perfectly comfortable. For surfing, bodyboarding or active swimming, a more secure performance fit is generally the better call. Flatlock seams can help reduce irritation, while a boardshort connector loop can stop the top from riding up during wipeouts.
Long sleeve or short sleeve?
Long sleeves are the go-to for all-day beach use, surf lessons and children with sensitive skin. They cover the arms and shoulders, which means less exposed skin to manage with sunscreen. They can also provide a little extra warmth when the wind picks up.
Short sleeves are cooler and easier for some kids to wear in very hot weather. They suit shorter swims and pool sessions, provided sunscreen is applied carefully to the upper arms and shoulders. There is no wrong choice here - it comes down to the conditions and how long they will be out there.
What about a rashie in cold water?
A rashie offers very limited warmth on its own. It can take the edge off wind chill and provide a comfortable layer, but it is not a substitute for a wetsuit when water and air temperatures drop. If your child is shivering, has blue lips, or stops enjoying the water, it is time to warm up rather than push through.
For winter surf lessons or cool early-morning sessions, pair the rashie with a properly fitted kids’ wetsuit. The rashie helps with comfort and chafe; the wetsuit provides insulation. Choosing the right combination lets kids stay in the water longer for the right reasons - because they are having a ripper time, not because they feel they have to keep up.
Make It Part of the Beach Routine
The easiest way to get consistent use from a rashie is to make it standard beach kit, alongside swimmers, a wide-brim hat, towel, water bottle and sunscreen. Keep one in the car or swim bag during summer so a spontaneous dip does not turn into an unprepared one.
Rinse it in fresh water after saltwater or chlorine, then dry it out of direct sun where possible. This helps preserve the fabric, colour and stretch. Avoid leaving it rolled up wet in the bottom of the bag, too - apart from the pong, damp fabric wears out faster.
At Oceanfire Surf, we have seen plenty of young surfers start out in a simple rashie and boardies, then build confidence one wave at a time. The best gear is the gear they will happily wear, whether they are chasing foamies at the shorey or heading out for their first proper lesson.
A rashie will not replace shade, sunscreen or sensible time out of the sun. It does make those long, salty days easier to manage - and gives kids one less reason to come in just when the waves are getting good.