A visit to Acadia National Park during the month of June can end up being drastically different, depending on whether the visit takes place at the beginning, middle, or end of the month. Visitors during the start of June, the regular season, are likely to find less black flies, a bit chillier weather, and far less tourists. Visits that take place in the middle of the month could go either way, depending on the season, but still won’t be too busy. Visits at the tail end of the month approach the beginning of peak tourist – and black fly – season. The weather will be the warmest at the end of June, but campsites will be harder to come by and trails will likely be far more crowded; however, there will be more ranger programs, events, and flowering trees to see.