How Many Swimsuits to Pack for a Holiday? A Day-by-Day Guide (2026)
The short answer: the practical formula for how many swimsuits to pack is (number of holiday days ÷ 2) + 1. For a 6-day holiday, 4 swimsuits is ideal; for a 10-day holiday, 6. There is one reason: a wet swimsuit needs an average of 4–8 hours to dry fully in the shade, and in a humid seaside climate it takes even longer. Packing two and wearing a damp swimsuit every day ruins both your comfort and the life of the fabric.
This is the detail most often overlooked when packing. We work out how many outfits we need in minutes, but when it comes to swimsuits we either say "two will do" or throw six into the bag and bring half of them home unworn. Below is a clear system based on the number of days, the type of activity and the length of your trip.
1. The swimsuit formula: why "days ÷ 2 + 1"?
Swimwear fabric contains elastane (Lycra), and elastane fibres are at their most vulnerable to strain when wet. Wearing a damp swimsuit again the next day means stressing the fibres before they have recovered. This is the number one reason swimsuits start to sag after just a few holidays.
The formula is about setting up a rotation system:
- Days ÷ 2: Lets each swimsuit be worn one day and rest (dry) the next.
- +1: A margin for the unexpected — a rainy day, a piece stained on the beach, or a swimsuit that has not dried in time for an evening poolside invitation.
Swimsuits by number of days
| Holiday length | Minimum | Ideal | Suggested mix |
|---|---|---|---|
| 2–3 days (weekend) | 2 | 2–3 | 1 one-piece + 1 bikini |
| 4–5 days | 2 | 3 | 2 one-pieces + 1 bikini |
| 6–7 days | 3 | 4 | 2 one-pieces + 2 bikinis |
| 8–10 days | 4 | 5–6 | 3 one-pieces + 2–3 bikinis |
| 14 days or more | 5 | 7–8 | 4 one-pieces + 3–4 bikinis |
Note: If you swim twice a day (the sea in the morning + the pool in the late afternoon), raise the formula to "number of days × 0.75". If you mostly tan by the pool and only take the occasional dip, the minimum column is enough for you.
2. Which style for which activity?
Once you have the number, the next question is: should they all be the same style? The answer is no. A swimsuit has three different jobs on holiday, and no single cut does all three well.
| Activity | What to look for | Suitable cut |
|---|---|---|
| Long swims, boat trips, water sports | Stays in place, shoulder support | High neck, halter, zip-front one-piece |
| Poolside, tanning | Minimal tan lines, adjustability | Bandeau, triangle bikini, thin straps |
| Beach club, late afternoon | Looks like an outfit | Peplum, corset, bustier, deep V |
| Busy beach, active day | Coverage and support | Cross-banded, underwired bustier |
In practice, a well-balanced four-swimsuit suitcase looks like this: 1 active + 1 tanning + 1 statement + 1 neutral spare.
For active days: supportive one-pieces
On days when you will be swimming, boarding a boat or jumping into the water off a ladder, your swimsuit must stay put. The CLEO High Neck Zipper One-Piece (metallic grey) secures the shoulders and neckline with its high-neck cut; the zip fastening makes it easy to put on and take off, which is practical for holidaymakers who change several times a day. If you prefer a softer alternative, the FRANCIS Front Cross One-Piece (olive green) gathers the bust with its front cross bands and reduces slipping as you move.
For tanning days: cuts that leave no lines
Strap marks are the biggest enemy of holiday photos. A strapless or thin-strapped piece solves the problem. The FREYA Smocked Bandeau Bikini (orange) has no shoulder straps, so it leaves an even tan on your back and shoulders; its ruched texture adapts to different sizes, so you are not tied to a single size in your suitcase.
For late afternoons: swimsuits that look like outfits
If you are heading straight from the beach to a seaside restaurant, a swimsuit that looks like a bodysuit once you add a pareo or linen trousers does the trick. The MARLENE Peplum Swimsuit (white) defines the waist with its peplum detail and can be worn on its own as a top. For a more structured look, the AMELIA Bustier Swimsuit (powder pink) offers bust support and an elegant silhouette with its bustier cut.
The neutral spare: a dark shade that goes with everything
Make the +1 swimsuit in your suitcase dark and neutral; it will match every pareo, every shirt and every beach bag. The BARBARA Banded Cross Swimsuit (plum) or the ARIEL Front Cross One-Piece (aqua green) can easily take on this role.
3. The wet swimsuit problem: what to do on the road
Calculating the right number of swimsuits is not enough; you also need a drying routine. Here are the three most common holiday mistakes and how to fix them:
- Wringing your swimsuit. Twisting a swimsuit to wring it out permanently deforms the elastane fibres. Instead, lay it flat on a dry towel, roll the towel up and press; that removes most of the excess water.
- Drying it in the sun. Direct sunlight, combined with salt and chlorine, fades the colour. Lay it out in the shade on your balcony, ideally on a flat surface.
- Carrying a wet swimsuit in a plastic bag. A swimsuit left in a plastic bag for a few hours starts to smell and becomes prone to mildew. Use a mesh bag or a wet bag; if you do not have one, leave the bag open.
The daily routine is simple: when you get back to the hotel in the evening, rinse your swimsuit in fresh water (no detergent needed), blot it with a towel and hang it in the shade. These three steps all but guarantee it will be dry by the next morning. For detailed care, see our article Swimsuit Care: 7 Rules to Keep Your Swimsuit Like New for Years.
4. Space-saving packing
- Roll your swimsuits, do not fold them. Fold marks can leave permanent creases, especially on light-coloured swimsuits.
- Count bikini tops and bottoms separately. Three bikini tops + three bottoms = nine different combinations. You get far more looks from the same space.
- Choose a colour palette. If all your swimsuits come from the same two or three shades, your pareos, kaftans and jewellery will go with every piece, so you will not need to carry extra accessories.
- Put underwired pieces in a separate pouch, not inside your shoes. Underwires lose their shape under pressure.
- Pack a swimsuit in your hand luggage. If your suitcase is delayed, the first day of your holiday is saved.
5. The right size = fewer swimsuits needed
A swimsuit that does not fit comfortably becomes the piece that takes up space in your suitcase and never gets worn. The number of swimsuits you actually need goes down as the fit of your swimsuits improves. Before ordering, we recommend checking our Swimsuit and Bikini Size Guide and, for cuts that suit your silhouette, our article Choosing a Swimsuit and Bikini for Your Body Type.
Frequently Asked Questions
How many swimsuits are enough for a one-week holiday?
For a 7-day holiday, 4 swimsuits is ideal: 2 one-pieces and 2 bikinis. You can manage with 3 at a minimum, but if you swim twice a day, do not go below 4. The formula: (7 ÷ 2) + 1 ≈ 4.
How long does a wet swimsuit take to dry?
A swimsuit blotted with a towel to remove excess water dries in an average of 4–8 hours in the shade, somewhere with a breeze. In humid coastal areas, this can take up to 12 hours. That is why the "wash it in the evening, ready the next morning" plan is the safest.
Is it bad to wear the same swimsuit two days in a row?
It is fine if the swimsuit has dried completely. Wearing it again while damp tires the elastane fibres and spoils its shape, and salt and chlorine residue left in the damp fabric wears it down. That is the only reason for the rotation rule.
Should I pack more bikinis or one-pieces?
It depends on your plans. For a holiday focused on swimming, boat trips and water sports, let one-pieces be in the majority; for a holiday centred on the pool, tanning and beach clubs, increase the number of bikinis. For a mixed itinerary, a 50-50 split is the most flexible solution.
Can I machine wash my swimsuit?
For a one-off wash after your holiday, you can put your swimsuit in a mesh laundry bag and wash it on a delicate cycle at 30 °C. Do not use fabric softener, bleach, the spin cycle or a tumble dryer. For your daily routine, a fresh-water rinse by hand is enough.
How should I store swimsuits at the end of the season?
Make sure your swimsuits are completely dry, then store them unfolded, ideally flat or loosely rolled, in a breathable fabric pouch. Avoid plastic bags and damp wardrobes. Do not press underwired pieces on top of each other.
Summary
There are three steps to packing your swimsuits: find the number with the formula ((days ÷ 2) + 1), spread the styles across your activities (active, tanning, late afternoon, spare) and set up a drying routine (rinse, blot with a towel, hang in the shade). Do all three and you will have nothing surplus in your suitcase, and you will never have to wear a damp swimsuit on the third day of your holiday.
To complete your suitcase, browse the full MOVOM collection.