How’s the weather looking at the moment? Will I be ok in shorts and shortsleeve jersey?
Be aware that although it’s Tenerife, in the Winter months the mountains are much colder than the coast. Right now it is still quite chilly up there above 1000m. Lengthy ascents will require single layer clothing, short or long sleeve depending on your tolerance to cold weather and also depending if you’re riding in the North or the South. When climbing, your body produces a lot of heat due to the constant excercise, so there is usually no need to wear more than a single lycra base layer. Obviously there is no wind chill experienced either. The best plan is to bring layered clothing and you can always peel it off if you get to hot. Nothing worse than freezing your fingers off though eh?
Like I always say though, at an altitude of ~2000m, frost appears in the morning. Add 30mph wind chill factor onto that plus the fact that you’re not pedalling as much going down hill for an hour and you have a recipe for disaster if you only bring a short sleeve jersey and nothing else. So definitely bring a windproof jacket, arm + leg warmers and preferably long
windproof gloves, if only used for descents from Las CaÃ±adas to sea level.
Keep in mind that it also all depends on what you are used to; I’m an Australian, so I don’t have much tolerance to cold weather plus I’m used to riding in the North, not the South, and it’s usually a little tiny bit colder up this way. Please check the weather page for futher info (temperature forecast and more).