Lochaber Midges in October — Risk, Peak Times, Kit
Background pressure only. Head net optional. Ground zero for Scottish midges. Wet, sheltered, west-coast — the trinity that drives the biggest populations in Britain. Glen Nevis, the Mamores, Knoydart and the Road to the Isles are all peak-pressure habitat from late May to mid-September.
Current risk
Lochaber in October: Low. Background pressure only. Head net optional.
When they bite
Out of season — no significant biting activity in Lochaber this month. Routine night frosts at altitude, first frosts in the glens by mid-month. Adult midge population in collapse. By the end of October the region is essentially post-season.
What to wear
- Smidge repellent (75ml)
- Light-coloured long-sleeve baselayer — midges have a strong preference for dark clothing.
Tactical notes
October closes the Lochaber midge season. The first two weeks can still hold small midge activity in particularly sheltered low spots on warm afternoons — the south-facing shore of Loch Linnhe, the lower [Glen Nevis](/glens/glen-nevis) river edge, the head of Loch Quoich on a still warm day. From around 15 October the pressure is functionally gone across the region.
This is high-quality bothy weather. The MBA bothies in Knoydart ([Sourlies](/bothies/sourlies), [Barrisdale](/bothies/barrisdale), A'Chuil), [Glenpean](/bothies/glenpean), [Resourie](/bothies/resourie), Camban and Lairig Leacach are quiet, useable, and increasingly cool but not yet winter-cold. Wild camping returns to comfortable. The Glen Nevis campsite is winding down for the season but the lower-level pitches are tolerable.
Lochaber in October is also the start of the stalking season tapering off and the autumn weather windows getting more aggressive. The midges are no longer a planning factor but the wind, rain and short daylight (sunrise after 7am, sunset before 6pm by month-end) all matter more. The first dustings of snow on the high tops typically arrive in the last week.
Kit: carry Smidge for the first half of the month as light insurance, drop it after that. Head net can stay home from about 15 October. The peat bog terrain that was uninhabitable in July is now bog-but-not-midgey — wet feet, no swarms.