Loch Lomond & The Trossachs Midges in April — Risk, Peak Times, Kit
Effectively no midges. Plan freely. The first proper midge country going north from Glasgow. Loch Lomondside, the Trossachs lochs and the Arrochar Alps all hold strong populations. The east shore at evening in July is a textbook case of why head nets exist.
Current risk
Loch Lomond & The Trossachs in April: None. Effectively no midges. Plan freely.
When they bite
Out of season — no significant biting activity in Loch Lomond & The Trossachs this month. First proper warmth on the loch shore and in the Trossachs woodland. Arrochar Alps and Crianlarich tops still in transition. Ground temperatures still below the midge emergence threshold across the region.
What to wear
No specific kit needed for midges in Loch Lomond & The Trossachs this month. Build the kit list around weather, daylight and route choice.
Tactical notes
April is the last reliably midge-free month in Loch Lomond and the Trossachs, and one of the most underrated visiting windows of the year. The big draw: the first proper warmth arrives in the Trossachs woodland (Loch Ard, Loch Katrine, the Aberfoyle birch and oak), the West Highland Way east-shore path is dry and quiet, and the visitor density is still well below summer numbers. The Loch Lomond camping management zones come into force on 1 March each year, but in April most pitches still have walk-up availability.
This is the prime month for the standard southern-Highland Munro introduction. [Ben Lomond](/hillwalking/munros/ben-lomond) from Rowardennan, the train-accessible [The Cobbler](/hillwalking/corbetts/the-cobbler) from Arrochar & Tarbet station, [Beinn Narnain](/hillwalking/munros/beinn-narnain) and [Beinn Ime](/hillwalking/munros/beinn-ime) as a paired day — all benign on midge grounds. Glasgow walkers coming north for the first proper Highland day of the year get the long-daylight benefit (over 14 hours by month-end) without paying the midge tax of June onwards.
The northbound [West Highland Way](/long-distance/west-highland-way) walkers who start their two-week trip in mid-to-late April do so partly to dodge the Loch Lomond east-shore midge windows that will arrive in June. The [Rob Roy Way](/long-distance/rob-roy-way), [Three Lochs Way](/long-distance/three-lochs-way) and [John Muir Way](/long-distance/john-muir-way) are all at their best in April. The Trossachs viewpoint hills — [Ben Venue](/hillwalking/grahams/ben-venue), Ben A'an, [Ben Ledi](/hillwalking/corbetts/ben-ledi) — give short half-day walks with first-of-the-year bluebells under the Loch Ard birches. Head net unnecessary; pack for changeable Highland spring weather.