They can be pretty horrendous around Torridon. Most of the time it is too windy or raining too hard for the midges to fly, but given a still, damp day, early morning or late evening and they will be looking for blood. Generally they are not as bad in the Cairngorms, but I have had to make a dash for the car at Linn of Dee (with wife, S-I-L and B-I-L trailing in my wake) due to the number and ferocity of midges.