About Acadia Weather
Acadia National Park is within a maritime climate, which means it's weather is generally milder than is otherwise the case this far north. Mount Desert Island temperatures are more moderate than those of inland Maine. The coastal climate of Maine is second only to the Pacific Northwest in annual precipitation. This moisture occurs in all forms within the park. Snow along with serious ice storms are common in winter as well as early spring. Rain is frequent throughout the year. Fog is common in the summer months.
Visitation Seasons
The spring season is a time of transition at Acadia. At the start of the season in March, things are still generally cold and most park facilities, including most of the loop road, are closed. Things start to open up in mid April, but it can remain quite cold, especially near the coast and at night, well into June.
The summer is the main visitation time in Acadia, and can get very crowded. Daytime temperatures are usually pleasant, with hot spells being quite uncommon. Rains are possible throughout the season. During the summer season, the Island Explorer, mentioned above, alleviates crowding by shuttling people to popular areas around the park.
The fall sees the gradual slackening of the crowds, but they pick up with force during the fall leaf change which generally reaches its peak the first half of October. Towards the end of the season crowds disappear and temperatures drop. Most of the loop road generally closes Decemeber 1.
The winter is a time of quiet and cold in Acadia. Visitors are very few and temperatures can be very low. Ice storms and snow are common.
