A tour is around 13.5kg for me including tent and cooking gear in the summer, probably 15-16kg in winter.
Tent (2kg ish, depending on weather and duration)
Cycling clothes plus spare set
One other set of clothes (t shirt, longs, underwear, fleece jersey or cycling jacket)
Micro towel, plastic razor, shaving oil, hotel bar of soap, toothbrush, sampler of toothpaste
Sleeping bag, 3/4 length foam karrimat. (winter bag will weigh another kg)
Waterproof jacket (for winter add down jacket plus hat and gloves)
Jetboil (or MSR whisperlite+Trangia Kettle+pan+plastic plate+150ml of Aspen4T)
Mug, Spork, mini bottle of wash up liquid, 1/3 pot scourer.
Usual bike spares/ multitool plus Leatherman (doubles as knife and bottle opener etc for cooking)
Paper maps, phone, passport, wallet
USB cable to fit bike dyno charger
That's about it