Late spring · Weather & things to do
Maine in May
Maine warms up: highs climb to 65°F (18°C), from 52°F in April, with lows of 45°F (7°C) and about 4.1 in (103 mm) of rain.
It scores 80/100 for comfort, 2nd of 12, which makes it a solid shoulder-season month.
- Avg high
- 65°F (18°C)
- Avg low
- 45°F (7°C)
- Rain
- 4.1 in (103 mm)
- Humidity
- 79%
- Cloud cover
- 67%
- Daylight
- ~14 h 35 min
- Comfort score
- 80/100 · Great
What May feels like
Highs near 65°F (18°C) make for comfortable sightseeing weather.
After dark, temperatures fall to about 45°F (7°C).
Showers are part of the month, adding up to about 4.1 in (103 mm).
Plan around May
May is shoulder season: good weather, a step below the best months (September).
- Comfort improves from 60/100 in April to 80/100.
- Our New England Fall Foliage route recommends Sep – Oct, so May falls outside its suggested window.
What to pack for May
- A warm layer for eveningsnights drop to 45°F
- Packable rain jacket or umbrellaabout 4.1 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Maine in May
May is good outdoor weather here, so these picks lean toward the open air.
Ocean Path
Easy 2-mile shoreline walk from Sand Beach past Thunder Hole to Otter Cliff.
Why now May scores 80/100 for comfort, good conditions for being outside.
Jordan Pond House
Popovers and tea on the lawn facing Jordan Pond and the Bubbles, a tradition since the 1890s.
Cadillac Mountain
Highest point on the Atlantic coast and one of the first U.S. spots to see sunrise in fall.
Why now Highs near 65°F and 4.1 in of monthly rain make this an easy outdoor pick.
Thurston's Lobster Pound
Dockside pound in Bernard: pick a lobster by weight and eat it on the deck over the harbor.
Park Loop Road
27-mile road linking Acadia's lakes, cliffs and beaches, mostly one-way.
Why now One to do outside while the weather is on your side.
Nearby in May
- Portland, Maine in May~51 mi · highs 54°F, 4.0 in rain · 6°C (11°F) cooler by day, about as wet
- White Mountains in May~75 mi · highs 44°F, 4.3 in rain or snow · 12°C (21°F) cooler by day, about as wet
- Portsmouth in May~99 mi · highs 58°F, 4.0 in rain · 4°C (7°F) cooler by day, about as wet
- New Hampshire in May~118 mi · highs 67°F, 3.7 in rain · 2°C (3°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Maine in May: quick answers
Is May a good time to visit Maine?
It's a good shoulder-season choice, scoring 80/100 against a best of 87 in September. Expect highs of 65°F (18°C) and 4.1 in (103 mm) of rain. Our New England Fall Foliage route recommends Sep – Oct, so May is outside its suggested window.
How hot is Maine in May?
Average highs are 65°F (18°C) and average lows 45°F (7°C), making it the 5th-warmest month by daytime highs.
Does it rain a lot in Maine in May?
Some: about 4.1 in (103 mm) of rain falls across May on average, the 5th-driest month of the year. The annual total is about 48.9 in (1241 mm).
What should I pack for Maine in May?
Bring a warm layer for evenings (nights drop to 45°F), packable rain jacket or umbrella (about 4.1 in of rain) and comfortable walking shoes (most picks involve some walking).
Planning Maine in May?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.