Darwin's UV Index regularly reaches extreme (11+) — the highest category possible. For children, whose skin is thinner and more sensitive than adults, sun protection in the water is non-negotiable. This guide helps Darwin parents choose the safest and most comfortable swimwear for kids.
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Why UPF 50+ Matters for Darwin Kids
A standard swim top blocks roughly 20% of UV radiation. A UPF 50+ rated garment blocks 98%+ — that's the difference between sunburn after 10 minutes and protection for hours. In Darwin where school holidays, beach days and swimming lessons happen year-round, UPF 50+ swimwear is essential, not optional.
What is UPF Rating?
UPF (Ultraviolet Protection Factor) measures how much UV radiation penetrates a fabric:
- UPF 15–24 = Good protection
- UPF 25–39 = Very good protection
- UPF 40–50+ = Excellent protection (50+ is the highest rating possible)
Look for the UPF 50+ label on rash vests, swimsuits and swim shorts. Most quality kids swimwear brands are now UPF 50+ as standard.
Types of Sun-Safe Kids Swimwear
Rash Vests (Short and Long Sleeve)
Long-sleeve rash vests provide the best UV coverage for the upper body. Pair with swim shorts or bikini bottoms for a practical, comfortable combination. Funkita, Funky Trunks and Pops + Co are excellent for fun, bright kids' rash vest designs.
Sunsuits (One-Piece)
Full-body coverage including legs, ideal for babies and toddlers. Makes dressing for the beach quick and easy. Pops + Co and Seafolly Kids offer great sunsuit options.
Swim Shorts
Board-short-style swim shorts for boys and girls. Look for UPF 50+ fabric and secure waistbands. Funky Trunks is a Darwin favourite for boys.
Two-Piece Rash Set
Rash vest top + bikini or board shorts bottoms. Great for active kids who need flexibility. Easy toilet access compared to sunsuits.
Kids Swimwear Sizing Guide
Most Australian kids swimwear is sized by age/height:
- Size 0 = 0–6 months (~60–70cm)
- Size 1 = 1 year (~76cm)
- Size 2 = 2 years (~88cm)
- Size 4 = 4 years (~104cm)
- Size 6 = 6 years (~116cm)
- Size 8 = 8 years (~128cm)
- Size 10 = 10 years (~140cm)
- Size 12 = 12 years (~152cm)
- Size 14 = 14 years (~164cm)
Always check the brand's specific size guide, as sizing varies. When in doubt, size up — kids grow fast and swimwear can be adjusted with ties.
Best Kids Swimwear Brands at Splash Swimwear
- Funkita — Vibrant patterns, excellent UPF 50+ range, suits ages 0–14
- Funky Trunks — Fun boys' swim trunks and rash vests
- Pops + Co — Australian brand specialising in baby and toddler swimwear
- Seafolly Kids — Fashion-forward designs, girls' bikinis and one-pieces from size 4
- Reef — Beach lifestyle brand, good for older kids' board shorts
Sun Safety Tips Beyond Swimwear
- Apply SPF 50+ sunscreen on all exposed skin, even with UPF swimwear
- Reapply every 2 hours and after swimming
- Add a wide-brim hat and UV-blocking sunglasses
- Seek shade between 10am–3pm (Darwin's peak UV hours)
- Hydrate — Darwin's heat means children dehydrate quickly
Shop Kids Swimwear at Splash Swimwear
Browse our full kids swimwear range including rash vests, sunsuits, swim shorts and two-piece sets. We also stock adult rash vests for the whole family.