Cotton, Polyester or Nylon? A Complete Hammock Fabric Guide for Australian Conditions

Walk into any outdoor store in Australia and you will find hammocks in cotton, polyester, nylon, canvas, and combinations of all four. The marketing language around each is enthusiastic and not always helpful. Words like breathable, durable, and weather-resistant are applied to products that differ considerably in what those terms actually mean in practice.

This guide cuts through the noise. It looks at the four main hammock fabrics used in the Australian market, explains how each performs in our specific climate conditions, and helps you make a decision based on how and where you actually plan to use your hammock.

Why Fabric Choice Matters More in Australia

Australia presents a more demanding environment for outdoor textiles than most countries. The UV index in Queensland, the Northern Territory, and much of Western Australia regularly reaches 11 or above in summer -- the extreme category -- which is more intense than most European or North American locations experience even at peak summer. UV radiation degrades fabric at the molecular level, weakening fibres, fading colours, and shortening the usable life of any textile left outdoors.

Coastal Australia adds salt air to the equation. Salt is hygroscopic, meaning it attracts and retains moisture, which accelerates corrosion of metal fittings and promotes mildew growth in fabric. Tropical and subtropical Australia -- everything north of the Tropic of Capricorn plus most of Queensland and the Northern Territory coastal zones -- adds high humidity, frequent rain, and conditions that are genuinely hostile to fabrics not designed for them.

Choosing the wrong fabric for your location and use pattern is not a minor inconvenience. It means replacing your hammock in two or three years instead of ten. It means mildew that does not wash out. It means colour that has bleached to nothing before the fabric has even worn through. Getting the fabric right is the most important single decision in buying a hammock.

Cotton: The Comfort Champion

Cotton is the traditional hammock fabric and remains the best choice for comfort. The natural fibre breathes in a way that synthetic fabrics do not, allowing air movement through the weave and preventing the heat buildup that makes synthetic hammocks uncomfortable on warm days. Cotton also has a natural softness and a slight elasticity that conforms to the body in a way that synthetics cannot replicate.

For Australians, the primary limitation of untreated cotton outdoors is its vulnerability to UV degradation and mildew. Raw cotton fibres break down under prolonged UV exposure, and damp cotton in warm conditions is an excellent environment for mildew and mould.

Mercerised cotton -- cotton that has been treated with caustic soda under tension -- is significantly more resistant to both UV and mildew than untreated cotton. The mercerisation process increases the fibre's lustre, strength, and dye uptake, producing a fabric that holds colour better and lasts longer outdoors. Most quality Brazilian handwoven hammocks use mercerised cotton. If the product description does not specify mercerised, assume it is not.

Best for: Covered outdoor areas (verandahs, pergolas), indoor use, the majority of Australian homes where the hammock is brought in or covered when not in use. Excellent choice for Queensland verandah use. Not recommended for full sun exposure over multiple years without UV protection.

Care: Machine wash gentle in a laundry bag, cold water, mild detergent. Dry in shade or partial shade. Store dry. Brings indoors or under cover during extended rain.

Polyester: The Practical Outdoor Option

Polyester is a petroleum-derived synthetic fibre with characteristics almost opposite to cotton. It dries quickly, resists mildew naturally, is more resistant to UV degradation than untreated cotton, and holds colour reasonably well under outdoor conditions. It is also significantly cheaper to produce than quality cotton, which is why entry-level outdoor hammocks are almost universally made from polyester.

The trade-off is comfort. Polyester does not breathe. In warm weather, a polyester hammock traps heat between the fabric and your body, making it noticeably less comfortable than a cotton hammock in the same conditions. The fabric also lacks the natural give of cotton, feeling stiffer and less yielding against skin.

Solution-dyed polyester -- in which the colour is added to the polymer before the fibre is extruded, rather than applied to the surface of finished fabric -- is considerably more UV and fade resistant than standard dyed polyester. Brands like Sunbrella use solution-dyed acrylic (a similar synthetic family) and claim substantial UV performance warranties for this reason. If you are buying a polyester hammock intended for full sun exposure in northern Australia, look specifically for solution-dyed construction.

Best for: Full-exposure outdoor installations where the hammock will be left out year-round. Coastal properties where salt air and humidity are constant. Anyone who cannot commit to bringing the hammock in or covering it regularly. Not recommended for primary comfort use -- if you want to spend real time in it, cotton is better.

Care: Hose down or machine wash, quick-dry naturally. Salt and mildew rinse away easily. Metal fittings are still susceptible to salt corrosion regardless of the fabric -- use stainless steel or coated hardware.

Nylon: Lightweight for Camping and Travel

Nylon is the camping hammock material. It is exceptionally light -- a full-size camping hammock in nylon weighs around 400-600 grams -- packs into a stuff sack smaller than a water bottle, and is strong enough to hold two adults in most double configurations. For bush camping, hiking, or any application where weight and packability are primary concerns, nylon is the correct choice.

For backyard or permanent outdoor use, nylon has significant limitations. It has poor UV resistance compared to polyester, and in the Australian sun will degrade, stretch, and eventually tear faster than either cotton or quality polyester. The slippery, cool feel of nylon is also less comfortable for extended lounging than cotton -- it is engineered for sleep while camping, not for an afternoon reading session.

Ripstop nylon -- nylon with a reinforcing grid woven through it that prevents tears from spreading -- is the camping standard, used by brands like ENO, Kammok, and Grand Trunk. For Australian bush camping in the Great Dividing Range, the Atherton Tablelands, or alpine environments, a ripstop nylon hammock is a serious and well-proven piece of gear.

Best for: Camping, hiking, travelling light. Anyone who spends time in national parks or the Australian bush. Not recommended for permanent backyard installation or primary comfort use.

Care: Rinse after use, dry completely before storing. Store loosely rather than compressed to maintain the integrity of the ripstop weave over time.

Canvas: Heavy-Duty but Specialised

Canvas hammocks -- typically made from heavy cotton duck or cotton-polyester blends -- are durable, weather-resistant when treated, and comfortable in a different way from open-weave cotton. Because canvas is a solid fabric rather than a mesh, it supports the back differently, and some people find the more enclosed feeling of a canvas hammock preferable for sleeping.

Canvas hammocks are heavier than other types (typically 1.5-3kg) and do not pack as small. They require more care in damp conditions, as untreated canvas will hold moisture and mildew if left wet. Canvas treated with paraffin or silicone waterproofing compounds performs better outdoors but requires periodic re-treatment.

Best for: Stationary backyard use where weight is irrelevant. Anyone who prefers a more enclosed sleeping feel. Not recommended for travel or where packability matters.

Choosing by Australian Climate Zone

Tropical and Subtropical Queensland, Darwin, Cairns

High UV, high humidity, frequent rain, and salt air if coastal. Prioritise UV resistance and mildew resistance. For comfort use on a covered verandah, mercerised cotton is excellent -- bring it in during the wet season or store under cover. For uncovered permanent installation, solution-dyed polyester is the practical choice.

Southeast Australia: Sydney, Melbourne, Adelaide

More temperate climate with cold winters and warm to hot summers. UV is still significant in summer. Mercerised cotton performs well in this climate for any covered or semi-covered installation. The drier air and cooler temperatures reduce mildew risk compared to the tropics. A quality cotton hammock brought in over winter will last many years in this climate.

Southwest WA: Perth

Mediterranean climate with hot, dry summers and mild, wet winters. UV is intense in summer. Cotton performs well in the dry heat, and the lack of humidity reduces mildew risk substantially. The main concern is UV degradation -- store or cover the hammock during Perth's extreme summer sun periods if it is cotton.

Camping Across Australia

Ripstop nylon, full stop. The weight and packability advantages are decisive, and the camping context means the hammock is not exposed to the same sustained UV as a permanent installation. Set up when you arrive, take down when you leave.

The Simple Decision Guide

If you can commit to covering or storing your hammock when not in use, or if your installation is under a roof or shade structure, buy the best mercerised cotton hammock you can afford. It will be more comfortable than any synthetic alternative, and with reasonable care it will outlast cheaper polyester options.

If you want a hammock that lives outside year-round without your attention, buy solution-dyed polyester. Accept that comfort is slightly reduced and choose the best quality in that category.

If you are going camping, buy nylon. Weight and packability are decisive.

Do not let fabric considerations override the fundamental decision about size, style, and hang system. A polyester hammock you never set up because it is uncomfortable to use is not a practical choice, regardless of its theoretical durability. Buy for how you will actually use it.