Australia Packing List Carry On Only: 12 Days in 30L

Is 12 days in a 30L bag realistic for an Australia packing list carry on only?

Yes, for Sydney and Melbourne in the southern summer it is realistic. December is warm, so clothes are thin, light and compress well. A 30L bag becomes tight only when you add a laptop, tablet, camera body, a lens or two, and the cables for all of them.

Treat the bag as a budget, not a wish list. Target 6.5 to 7 kg total packed weight if you will fly domestic, because that is the common cabin limit and you may be weighed at the gate. The bag itself eats 0.7 to 1.2 kg of that.

The rule that makes it work: clothes cover 4-5 days and you wash once. Everything else is decided by function, not by what you might need.

What is the weight and volume budget for a 30L bag?

The figures below are typical estimates for lightweight gear, not measurements of specific products. Weigh your own items on a kitchen scale before you trust them.

The takeaway from the table: clothes come to roughly 2.1 kg (a range of 1.8 to 2.4 kg), while tech and camera gear add up to about 1.8 to 3.2 kg. At the high end, electronics outweigh your clothes, which is why the audit starts with them.

Added up, the table runs from about 5.5 to 8.6 kg. To stay near 7 kg, aim for the lower half of each range and leave out anything you cannot justify.

What should I wear in Sydney and Melbourne in December?

Sydney typically runs about 19 to 26C in December with humidity, afternoon thunderstorms and strong UV. Breathable synthetic or merino tees and shorts do most of the work. Cotton dries slowly in humid air, so avoid it for the core kit.

Melbourne typically runs about 14 to 26C and can swing 15C or more in a single day. A hot morning can turn into a cool, windy evening after a southerly change. Layering beats extra bulk.

So the kit needs two additions: a packable rain shell (about 200 to 300 g) that also blocks wind, and one warmer item such as a light merino or fleece for Melbourne evenings. A long sleeve doubles as sun cover on hikes.

What is the clothing math for a carry-on-only trip?

A workable set for 12 days with one wash: 4 quick-dry tees, 1 long sleeve, 2 shorts, 1 light pant, 1 swimsuit, 3 to 4 underwear and 2 to 3 pairs of socks. Socks are low-need if you live in sandals and trail runners in the heat, so 2 to 3 pairs is plenty and five pairs would be wasted space.

Wash by rotation. Sink-wash underwear and a tee in the evening with a drop of soap, roll them in a towel to wring out moisture, and hang them overnight. Synthetic and merino usually dry in 6 to 10 hours in dry air.

Sydney humidity slows drying, so plan a day ahead and do not wash the only shorts you own on the night before a flight. For the one big wash, use a laundromat or an apartment machine at about day 6 or 7.

Footwear rule: two pairs maximum. Wear trail runners or cushioned sneakers on the plane, and pack sandals. That covers city walking, beach and day hikes. A third pair costs about 400 to 800 g and a large share of the volume.

How do I handle laptop, camera, chargers and plugs?

Audit electronics by function. Laptop, tablet, phone and camera overlap heavily. For most trips pick one: a MacBook or an iPad mini, not both. If you edit photos or work remotely, keep the laptop. If you mostly read, navigate and upload photos, the iPad mini saves about 500 g or more.

If the phone camera is enough for most shots, consider leaving the camera home. If you keep the camera, take one versatile zoom lens and one spare battery, not a lens kit.

Australia uses Type I plugs at 230V and 50Hz. Most modern phone, laptop and camera chargers are dual-voltage (look for INPUT 100-240V on the label), so you need only a plug adapter, not a converter. Hair dryers and shavers that say 120V only can be damaged, so leave them home.

Use one GaN multiport brick (65W is enough for most laptops and phones together) instead of a 140W station unless your laptop actually needs more. Bring two short cables of different types and cut the rest.

Which Australian airline bag rules could trip me up?

International carriers usually allow generous cabin bags, but domestic legs are stricter. Qantas, Virgin Australia, Jetstar and Rex commonly allow about 7 kg of cabin baggage with size limits, and some count the personal item toward that weight. Jetstar and Rex are known for enforcing it, and cheap fares may exclude checked bags entirely.

On a Sydney to Melbourne flight (about 1 hr 30 min in the air), assume your pack and your personal item are weighed together. Put the laptop, camera and power bank in the personal item for security checks, but expect the total to be counted. Keep the real total at or under 7 kg.

Before booking, confirm the exact cabin weight and size for your fare type on the airline's official site, and note that these limits change. Wearing a jacket with heavy items in the pockets may get you past the gate, but staff can ask you to remove them, so do not rely on it.

For liquids at security, keep containers at 100ml or less in one clear bag. Domestic flights in Australia generally do not apply this limit, but your international leg will.

What should I cut, keep or buy there?

Buy sunscreen (SPF 50+) on arrival at any supermarket or pharmacy such as Woolworths, Coles or Chemist Warehouse. It saves liquid space and the Australian sun is intense. Add a wide-brim or legionnaire-style hat and sunglasses.

For beach and hikes, bring a quick-dry swimsuit, a small packable towel and a refillable bottle. Carry 1L or more of water for day hikes, wear sun protection, and check bushfire and heat advisories in summer. Swim only at patrolled beaches between the red and yellow flags.