zammy said:
Sleeping bags and tents- cons:
You'll need a 0 degrees celsius bag=1 kg at least
sleeping mat=0.3 kg
tent=1.5 kg at least
A bigger pack= +1 kg
cooking gear=0.5 kg at least
All means more weight.
Or you could invest in some lightweight gear:
Your Sleepingbag:
30F/-1 C Zpacks 900 fill-power sleeping bag 408g
or 30F/-1C Marmot Hydrogen sleeping bag 702g
Your Tent:
Zpacks Hexamide 425g
Vaude Power Tokee Ultralight: 825g
Your Backpack:
Gossamer Gear Gorilla 46L 715g
Gossamer Gear G4 66L 464g (size M)
Zpacks 50L 255g
Sleeping Pad:
Therma-a-rest NeoAir XLite: 350g
Therma-a-rest ProLite:460g
Closed-cell foam pad 0.6cm 180 X 50cm: 135g
There are lots of options, none of which have to be heavy and cumbersome. Many people walk the Camino without a sleeping bag or pad, which means, unfortunately, that they
have to find a bed at the end of the day. If you bring at least a sleeping bag and a sleeping mat (air or foam) you know that you will be warm and can sleep on the floor when you arrive if there are no more beds. I've spent literally dozens of nights on the floor (and once on a kitchen table!) of refugios and monasteries because I arrived late in the day and there were no longer any beds left.
If you have the time do some research, you'll find lots of information on lightweight gear.