* July-September: Midge numbers typically start to decline in July, and they're usually at their lowest levels in September. If you're planning a trip to Scotland during these months, you're less likely to be bothered by midges. However, you should still take some precautions to protect yourself from midges, especially if you're going to be spending time in rural areas.
* October-April: Midges are dormant during these months, so you won't need to worry about them. This is the best time to visit Scotland if you're looking to avoid midges.