by al78 » Tue Nov 23, 2021 10:14 am
I've not done the Cape Wrath trail myself but I believe the highest point is the bealach between Kinloch Hourn and Shiel Bridge (which I have walked), which is about 700m. I would say this is odds on to be navigable without needing winter kit around April, but it will depend on how snowy the winter is and how cold the start of spring is. Others who frequent the highlands in early spring will be able to advise better.
I've checked the monthly climate table for Fort William and April on average is drier and sunnier than August. July and August in the highlands are surprisingly claggy and damp compared to spring. I believe this is because blocking highs are more likely in the spring months. Some years show little interest in climatology, so this can only be a probabilistic guide at best.
April will be much better for avoiding the midges. August is notorious for them.
If it were me, I'd lean towards April, just bear in mind it will be chilly and be prepared for overnight temperatures to drop close to or below freezing in the glens.