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Mountain encounter guidance · Beta
Mid Wales and Cambrian Mountains mountain midge forecast.
See when forecast conditions may favour midges across approaches, mid-slopes and summit ground—then plan the timing and height of your day.
Live regional guidance
Mid Wales and Cambrian Mountains midge outlook.
Choose a mountain area and forecast day. A higher encounter score means conditions are more favourable for midge nuisance.
View regional forecast
Forecast run: 30 August 2026 at 04:40 UTC.
Reading the forecast
What makes a midge day?
Midge encounters are highly local. The forecast combines broad weather signals with elevation to describe when nuisance is more or less likely—not how many insects are at one exact spot.
Light wind and shelter
Calmer spells and sheltered terrain are more favourable. An exposed ridge may feel very different from a still glen, woodland edge or lee slope nearby.
Mild, damp conditions
Warm-season moisture and humid conditions can support activity, while cold or less favourable seasonal conditions reduce the encounter signal.
Time and sunlight
The timing pattern matters. The forecast highlights broad peak windows rather than treating the whole daylight period as equally favourable.
Height—not a hard cut-off
Wetter lower ground is often more productive, but a calm spell can still allow midges high on the hill. Summit height alone is not a guarantee.
Midges on the hill
One mountain, three different encounters.
An approach can pass through wet, sheltered ground before reaching open slopes and a breezier summit. That is why this forecast separates three useful height contexts instead of showing a single number for an entire mountain day.
Local habitat, drainage, vegetation and small sheltered pockets remain beyond a regional model. Treat the score as one planning layer beside wind, rain, cloud and visibility.
How Mountain Weather builds forecast guidance →SummitExposure often helps
Mid-slopesTerrain and wind matter
ApproachShelter and wet ground matter
Forecasts by area
Check mountain midge conditions around the UK.
Open a regional outlook for the hills you plan to visit, from Skye and the western Highlands to the Lake District, Eryri and the Pennines.
Lewis and HarrisThe Harris hills and Clisham→SkyeThe Cuillin and Skye's higher hills→Northwest HighlandsWester Ross, Assynt and the far northwest→LochaberBen Nevis, the Mamores and surrounding ranges→Argyll and Loch LomondThe Arrochar Alps, Crianlarich and Argyll hills→CairngormsThe Cairngorm plateau and eastern high tops→Monadhliath and Creag MeagaidhThe Monadhliath, Creag Meagaidh and Laggan hills→Perthshire HighlandsSchiehallion, Ben Lawers and the Perthshire ranges→Angus GlensLochnagar, Glen Shee and the Angus hills→Southern ScotlandGalloway, the Borders and the Southern Uplands→Eryri (Snowdonia)Yr Wyddfa, the Glyderau and the Carneddau→Clwydian Range and BerwynsThe Berwyns and northeast Wales→Mid Wales and Cambrian MountainsCadair Idris, Pumlumon and the central Welsh hills→Bannau Brycheiniog (Brecon Beacons)The central Beacons, Black Mountains and Fforest Fawr→Lake DistrictThe Lakeland fells→Northumberland and CheviotsThe Cheviots and Northumberland's higher hills→North PenninesCross Fell and the North Pennine moors→Yorkshire DalesThe Three Peaks and surrounding fells→Peak DistrictThe Dark Peak and higher moors→DartmoorThe high moor and tors→
Midge forecast questions
Useful before you head out.
For advice on treating bites or a serious reaction, use current NHS insect bite and sting guidance.
What is a mountain midge forecast?
It estimates how favourable the forecast weather is for encountering biting midges. It is an encounter guide, not a measured insect count.
When is midge season in the UK?
Midge activity is most often associated with the warmer months, particularly in damp western and northern areas. The exact start and end vary with local weather and habitat.
Do midges occur on mountain summits?
They can. Exposed, breezy summits are often less favourable than sheltered lower ground, but elevation is not a guaranteed cut-off during a mild, calm spell.
How can walkers reduce midge encounters?
Check the forecast timing, favour airier locations where appropriate, cover exposed skin and carry a suitable insect repellent. Always make route decisions around the full mountain forecast, not midges alone.