The Best Suit Fabrics for Singapore’s Heat
Singapore never really cools down, so the cloth has to do the work. The weaves, fibres and weights that keep a suit comfortable in the heat.
Singapore has no cool season to wait for. Most days sit around 31°C, the humidity rarely lets up, and the cloth you choose matters more than the cut.
Here are the suit fabrics for hot weather that we reach for most at the atelier, what makes each one wear cool, and how to choose between them.
What makes a cloth wear cool
No fabric can cool you down. The best a cloth can do is let heat and moisture escape, and stay out of the way while it does. Five things decide how well it manages that.
The weave
An open weave leaves small gaps between the yarns for air to pass through. Hold a good summer cloth up to the light and you should see it.
The weight
A lighter cloth traps less heat. In Singapore, most of our suits are cut from cloths under 290 grams.
The yarn
Tightly twisted yarns are springier and drier to the touch, so the cloth sits away from the skin instead of clinging to it.
The fibre
Wool, linen, silk and cotton absorb moisture and let it go again. Synthetics hold it against you.
The colour
Lighter shades reflect more of the sun. Stone, sand, light grey and mid-blue all wear cooler than charcoal or black.
Wool, made for summer
It surprises many clients, but wool is often the best choice for the heat. It takes moisture from the skin and releases it into the air, it resists creasing, and it keeps its shape through a long, humid day.
High-twist wool
Spun from yarns twisted far more tightly than usual and woven in an open plain weave, high-twist wool is porous, springy and dry to the touch. It shrugs off creases, which makes it a favourite for travel. The best known of these cloths goes by the name Fresco.
Tropical wool
A lightweight worsted in a plain weave, usually under 260 grams. It looks and behaves like a classic city suiting, only lighter and more open: the safest choice for a business suit you will wear every week.
A higher Super number does not make a cloth cooler on its own. Weight and weave matter far more, as we explain in Super 110s to 180s.
Linen, creases and all
Linen is spun from flax, one of the oldest fibres in tailoring. It draws heat away from the body, dries quickly and feels cool against the skin. Nothing says summer quite like it.
It does crease, and it is meant to. A good linen softens and settles to the wearer over time, and the wrinkles are part of its character rather than a flaw.
Heavier linens crease less and hang better than the thin, limp kind. Our double-breasted jacket in Solbiati Art du Lin is cut from 100% linen, woven in Italy from a twisted three-ply yarn, so it keeps its shape through daytime weddings, garden receptions and long lunches.
In its favour
- The coolest feel of any suiting
- Dries quickly in the humidity
- Softens with every wear
Worth knowing
- Creases readily, especially in lighter weights
- Reads more relaxed than wool
- Lighter weights can look limp
Wool, silk and linen together
A blend takes something from each fibre. Wool brings resilience, linen brings coolness and texture, and silk adds a dry, lively hand with a quiet sheen. A wool, silk and linen cloth creases far less than pure linen and keeps much of its character.
Some cloths go further and open up the weave itself. Loro Piana's Silk Air, which we used for this double-breasted jacket, has an open, slubbed surface: the dry hand of silk in a weave loose enough to let air through.
In Singapore, look at the weave before you look at the colour.
The ŠAKAL Atelier
Two more for the heat
Cotton
Cotton is soft, breathable and easy to wear, and it belongs on the relaxed side of a wardrobe: a summer jacket, a pair of trousers, a weekend suit. It holds moisture longer than wool and creases more, so it suits Saturdays better than long days at the office.
Mohair blends
Mohair comes from the Angora goat. It is springy, crease-resistant and naturally lustrous, and blended with wool it makes a crisp, open cloth that has been a tropical favourite for decades. Its subtle sheen suits evening wear.
Cloths that hold the heat
Polyester and other synthetic blends are cheaper and hard-wearing, but they do not absorb moisture, so they trap heat and sweat against the skin. In our humidity, you feel the difference within minutes.
Flannel and tweed are made for the cold: brushed, dense and warm by design. Keep them for trips to cooler climates, along with heavy worsteds much above 300 grams.
A rough guide to weight
Mills give a cloth's weight in grams per metre, or in ounces per yard. For Singapore, lighter is almost always better, though a little weight helps a jacket hang well.
| Weight | Roughly | In Singapore | Typical cloths |
|---|---|---|---|
| Under 250g | 7 to 8 oz | The coolest; ideal for days spent outdoors | Tropical wool, cotton, lighter linen |
| 250 to 290g | 8 to 9½ oz | The sweet spot for year-round wear | Tropical and high-twist wool, wool, silk and linen |
| 300g and above | 10 oz and up | For air-conditioned days and travel | Heavier worsteds, flannel |
Swipe to compare →
These ranges are approximate. The weave matters as much as the weight: an open 280-gram cloth can wear cooler than a tightly woven 240-gram one.
Matching the cloth to your days
For the office, every week
Tropical or high-twist wool, around 240 to 280 grams. Polished, slow to crease and cool enough for the walk between buildings.
For daytime weddings and events
Linen, or a wool, silk and linen blend, in a lighter shade. Cool, textured and right for the occasion.
For travel
High-twist wool. It packs well and recovers from creases overnight.
For weekends
Cotton or linen, cut as an odd jacket to wear with chinos.
How the jacket is made matters too. A lighter construction and less lining let the cloth breathe; we compare the options in Full Canvas vs Half Canvas. You can browse the mills we carry in our fabric brands guide.
What clients ask us
What is the best suit fabric for hot weather?
For most people, a lightweight tropical or high-twist wool. It breathes, resists creasing and looks polished. Linen is cooler still, but creases more.
Is linen or wool better for Singapore?
Linen feels cooler; wool stays sharper for longer. Many clients have both: wool for work, linen for weekends and daytime events. A wool, silk and linen blend sits in between.
What suit weight is best for Singapore?
Generally under 290 grams, and under 250 grams if you spend a lot of time outdoors.
Is a higher Super number cooler?
Not on its own. A fine Super 150s in a heavy, tight weave can wear warmer than a lighter Super 110s. Weight and weave matter more.
The quickest way to feel the difference is to hold the cloths up to the light. Visit the atelier and we'll lay out the summer bunches side by side.
— Šakal Atelier · Singapore
