I am visiting Mt. Titlis in Switzerland for a single day between the 15th of December to the 20th of December. The activities would include riding cable car but not skiing. What kind of clothing is required in this duration of the time period?
In the Nordic countries, we use a layered clothing method, which has the benefit of being adjustable to the weather:
- First layer: Moisture-wickening technical underclothing
- Long underpants
- Long sleeve undershirt
- Thin socks
- Second layer: Warm and breathable
- Fleece jacket and underpants, wool socks
- Thin wool gloves
- Third layer: Outer shell
- Windproof but breathing jacket and pants
- Thick waterproof two-finger gloves (separate thumb, and other fingers together)
- Waterproof shoes (eg. goretex)
- Wool collar or wool scarf that covers your throat, ears and nose
- Wool or technical hat (beanie)
The first layer keeps you warm by removing any sweat and humidity (this is the worst type of cold feeling you can get - being wet and cold!). The second layer keeps you warm even in the coldest of weathers. And the third layer keeps wind and water away, which is essential in cold and/or wet snowy weather. And even the best of warm clothes will be cold if the wind can go through it.
The adjustability is helpful, for example if in the morning it is -35 C, but according to the forecast it will warm up to -15 C in the afternoon. Then you just dress up for -35 C in the morning, and in the afternoon, you will probably leave out the second layer.
Or if there is no wind or rain, and plenty of sun, you might leave parts of the outer shell out (probably the wool scarf, and windproof pants).
Or if you sweat so much that your lowest layer is all wet (despite it's moisture-wickening capabilities), you can remove the 1st layer altogether, and stay warm with the dry 2nd and 3rd layer.
Wool and fleece in particular have the added benefit of keeping you warm enough even if they get wet. And they dry very quickly - but keep away from open fire, as they start to burn easily!
Winter mountain night temperatures are comparable with the temperature inside a freezer. Daytime temperatures are no higher than those inside a fridge but can be lower and feel lower still.
You will need serious winter clothes, meant for serious winter weather. And if you are from a warm climate you need extra layers over what locals would wear. Long underpants and a warm long sleeved undershirt at least. Thermo versions might be needed.
On top of that you need a hat, scarf, mittens (or gloves but mittens are warmer) and sun glasses. Keep your outer clothing well closed, up to your neck, unless you feel hot.
And good boots that keep your feet warm and dry.
It depends how long you are staying outside, as tourist I recommend: [I was there several time]
On top, 3 layers are often enough (shirt, pullover, winter jacket), bottom: 2 layers (you can do also with one layer [jeans], as I do it, but if you do not move, depending of winds, it can be cold, I do not recommend it).
As shoes: I recommend the moonboot: light and very effective for keeping heat. But they are just good for simple walking on snow, not for hiking.
Glove, sunglasses, and bonnet is essential.
As tourist, I do not recommend more equipment, and you can heat in restaurant. But if you want to remain outside several hours (and maybe on evening), you need technical wearing: go in a sport shop and ask. [There is too much risk to get wrong equipment if you just order stuff by "name/type"].
(according to the precision you just made)
It is difficult to answer.
If you just want to go up the mountain, look around, take a couple of pictures, you don't need the whole layers thing and technical winter equipments; you will not stay out that long.
I would have regular winter boots; I don't think you will want to venture out and hike; so no need for specialized hiking boots.
Also a regular winter coat, no need for a fancy technical and expensive winter coat if you will be using it for just a couple of hours (remember that down in the valley it will not be that cold).
Also a good hat and a pair of winter gloves; maybe a scarf if your coat does not cover your neck.