Joybuy Insights

Finding Your Perfect Fit: A Guide to Women's Swim Shorts in the UK

Finding a pair of women's swim shorts that is comfortable, practical and stylish can feel like a challenge. The market is filled with options, but many fail to deliver on their promises, leaving you with swimwear that is more of a hindrance than a help. As a Joybuy Product Recommendation Officer, my role is to help you navigate these choices and identify what truly matters.

Before you add another pair to your basket, let's look at some common pitfalls that lead to disappointing purchases.

  • The "Quick-Dry" Myth: Many shorts are labelled as quick-drying, but are made from materials that absorb and hold water. This results in heavy, sagging fabric that takes hours to dry, causing discomfort and chafing long after you have left the water.
  • The Unreliable Waistband: There is little more frustrating than a waistband that rolls down, digs into your skin, or becomes loose the moment you dive in. A poorly designed waistband compromises both comfort and confidence, forcing you to constantly readjust.
  • Vague Sun Protection Claims: Some swimwear vaguely mentions "sun blocking" or "UV protection" without providing a certified rating. True sun protection is measured by a UPF (Ultraviolet Protection Factor) rating, a standard you should always look for.

By understanding these issues, you can make a more informed decision and choose swim shorts that genuinely enhance your time at the beach, pool or on a paddleboard.

Key Features to Check Before You Buy

To avoid the traps, focus on a few core parameters. These objective details are far more important than flashy marketing and will determine the performance and longevity of your swimwear.

Fabric Composition and UPF Rating

The material of your swim shorts is critical. Look for blends of polyester and elastane (spandex). Polyester is durable, resistant to chlorine and genuinely quick-drying, while elastane provides the necessary stretch for freedom of movement.

Most importantly, check for a certified UPF 50+ rating. This is a technical standard indicating the fabric blocks at least 98% of harmful UVA and UVB rays. This feature is essential for anyone spending extended time outdoors, making UPF 50+ swimwear for women a practical necessity, not a luxury.

Fit, Cut and Coverage

The right fit ensures your shorts stay in place and provide the coverage you desire.

  • High-Waisted Fit: A pair of high waisted swimming shorts offers excellent support around the midsection. This design helps prevent the waistband from rolling down during activity and provides a smooth, flattering silhouette that many find more comfortable and secure.
  • Inseam Length: The length of the shorts, measured by the inseam, affects both coverage and mobility. Shorter inseams (around 5 inches) are great for tanning and active sports, while long swim shorts for women (7 inches or more) offer increased coverage and thigh protection, functioning similarly to ladies board shorts.
  • Inclusive Sizing: A good fit is for everyone. Look for brands that offer a comprehensive range of sizes, including dedicated plus size swim shorts, with size charts based on clear body measurements to help you find the perfect match.

Functional Design Details

Small features can make a big difference in practicality.

  • Built-in Liner: A soft, breathable inner brief or liner provides essential comfort and coverage, eliminating the need to wear separate bikini bottoms underneath.
  • Pockets: Simple but incredibly useful, swim shorts with pockets allow you to carry small essentials like a key, card or lip balm without needing a separate bag. Look for pockets with drainage holes or mesh lining so they do not fill with water.

Our Top Recommendations

Based on these practical criteria, here are a few options tailored to different needs and preferences.

MATCH FOR: The Active Beachgoer
Willit Women's Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets 5" Black Size 38

Willit Women's Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets 5" Black Size 38

Why This Fits Their Persona: For those who enjoy beach volleyball, paddleboarding or running along the shore, the 5-inch inseam offers excellent freedom of movement without sacrificing coverage. The high waist ensures they stay put during vigorous activity.

How It Avoids the Trap

The polyester-elastane blend is genuinely quick-drying, and the wide, high waistband is designed to stay flat and secure, preventing rolling or slipping.

Key Advantage & Pros

Features certified UPF 50+ sun protection and includes a built-in liner for all-in-one comfort.

MATCH FOR: The Modesty-Focused Swimmer
Willit Women's 7" Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets Navy Size 40

Willit Women's 7" Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets Navy Size 40

Why This Fits Their Persona: For those seeking more coverage for comfort and sun protection, these long swim shorts for women are an ideal choice. The 7-inch inseam covers more of the thigh, making them perfect for family holidays or anyone who prefers a more modest cut.

How It Avoids the Trap

The longer cut combined with certified UPF 50+ fabric provides substantial sun protection, moving beyond vague marketing claims to offer a verifiable safeguard.

Key Advantage & Pros

The high-waisted design provides a secure, comfortable fit, while the side pockets add a layer of practicality for carrying small items.

MATCH FOR: The Plus-Size Comfort Seeker
Willit Women's 7" Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets Black Size 50

Willit Women's 7" Swim Board Shorts UPF 50+ High Waisted Swimming Shorts with Liner Pockets Black Size 50

Why This Fits Their Persona: This option directly caters to the need for well-fitting plus size swim shorts. The combination of a high waist, 7-inch inseam and accommodating size range ensures a secure and comfortable fit without compromising on function or style.

How It Avoids the Trap

The wide, elasticated high waistband is specifically designed to provide support and stay in place, preventing the common pitfall of waistbands that dig in or roll down on curvier figures.

Key Advantage & Pros

Offers all the key functional features—UPF 50+ fabric, pockets and a liner—in an inclusive size range, ensuring a high-performance option for more body types.

Looking for More Options?

We have compiled a complete, real-time list of products that fully satisfy these strict selection criteria and UK safety regulations.

Frequently Asked Questions

How do I choose the right size for swim shorts online?

Always refer to the brand's specific size chart, which should be available on the product page. Measure your waist at its narrowest point and your hips at their widest point. Compare these measurements to the chart. If you are between sizes, consider how you prefer your clothes to fit; for a snugger, more athletic fit, size down, and for a looser, more relaxed fit, size up.

Can I wear women's swim shorts for activities other than swimming?

Absolutely. The quick-drying, stretchy and durable nature of high-quality swim shorts makes them incredibly versatile. They are an excellent choice for kayaking, paddleboarding, hiking, beach yoga or even just as comfortable shorts for a walk on a warm day.

What is the difference between swim shorts and ladies board shorts?

The terms are often used interchangeably, but traditionally, board shorts were longer, reaching the knee and had a more rigid, non-elastic waistband with a lace-up fly. Today, most modern ladies board shorts have adopted the features of swim shorts, such as shorter inseams, elasticated waists and stretchier fabrics, blurring the lines between the two. The key is to focus on the features mentioned above rather than the name.