🌤 Weather at Mackworth Island State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 26–64 °F | 55–80 °F | 32–71 °F | 16–38 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Portland Intl Jetport, 4 mi away, elevation 45 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Mackworth Island State Park is a public state park in Maine near Falmouth in Cumberland County. Spanning 100 acres and established in 1946, this park offers a peaceful retreat into nature for visitors of all ages.
Quick Facts
| State | Maine |
| Nearest City | Falmouth |
| County | Cumberland |
| Park Size | 100 acres |
| Established | 1946 |
| Google Rating | ⭐ 4.5/5 (450 reviews) |
Location & Getting There
Mackworth Island State Park is located near Falmouth, Maine. The park’s coordinates are 43.6900, -70.2350.
Things to Do
Maine state parks protect the state’s rugged North Atlantic coastline, deep spruce-fir forests, and pristine inland lakes. Activities include hiking rocky coastal headlands with dramatic ocean views, swimming at freshwater lake beaches, sea kayaking along island-dotted bays, fishing for brook trout in remote ponds, camping in dense northern forests, beachcombing on wide sand beaches, snowshoeing through snow-laden spruce forests in winter, cross-country skiing, and exploring historic lighthouses and maritime heritage sites.
Best Time to Visit
Summer (July–August) is peak season with warm temperatures and long days — popular coastal parks fill early. Fall (September–October) brings stunning foliage, lower crowds, and crisp weather ideal for hiking. Spring (May–June) is the “mud and bug season” — blackflies peak in June. Winter offers peaceful snow-covered landscapes and excellent snowshoeing, though many park facilities close. Coastal parks can be enjoyed year-round with proper layering.
Visitor Tips
Maine state parks charge day-use fees ($4-$8 per adult for residents, $6-$8 for non-residents). Camping reservations through the Maine DACF reservation system. Peak season at coastal parks like Reid and Popham is very short — July and August fill quickly. Bring layers even in summer, as coastal temperatures drop quickly with sea breezes. Ticks carrying Lyme disease are a serious concern throughout Maine.
Explore More Maine State Parks
Mackworth Island State Park is one of many outstanding state parks in Maine. Discover more parks in our Best State Parks in Maine guide, or use our Park Finder to search by activity, location, or features.
Wildlife & Nature
Mackworth Island SP — a 100-acre island connected by causeway to Falmouth. The island’s spruce-fir forest, rocky shore, and tidal flats support great blue herons, ospreys, and harbor seals. A fairy house village (whimsical woodland structures built by visitors) is a beloved attraction. The island was the former estate of Governor Percival Baxter (who donated Baxter State Park).
Nearby Attractions
Falmouth — adjacent. Portland — 5 miles south. Casco Bay — surrounding.
Keep exploring: The closest neighbors are Ferry Beach State Park (a short drive away) and Eagle Island State Historic Site (a short drive away).
🐾 Dogs & Pets at Mackworth Island State Park
- Pets allowed? statewide rule
- Pets are allowed at most Maine state parks year-round, including trails, but must be leashed, under the handler's physical control and never left unattended.
- Leash rule statewide rule
- Leash not exceeding 4 feet, under the physical control of the handler
- Beaches & swim areas statewide rule
- Pets are not allowed on state park beaches April 1 through September 30; leashed pets are welcome on beaches October 1 through March 31
- Statewide exceptions statewide rule
- No pets allowed at Sebago Lake State Park campground; park staff may assign pet owners to less congested camping areas
Are dogs allowed at Mackworth Island State Park?
Pets are allowed at most Maine state parks year-round, including trails, but must be leashed, under the handler's physical control and never left unattended. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via maine.gov. More: Maine state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Mackworth Island State Park
From our editorial guides, matched to this park’s activities:
