Early summer · Weather & things to do
Portland, Maine in June
Portland, Maine warms up: highs climb to 62°F (17°C), from 54°F in May, with lows of 56°F (13°C) and about 5.0 in (127 mm) of rain.
It scores 75/100 for comfort, 2nd of 12, which makes it a solid shoulder-season month.
- Avg high
- 62°F (17°C)
- Avg low
- 56°F (13°C)
- Rain
- 5.0 in (127 mm)
- Humidity
- 88%
- Cloud cover
- 62%
- Daylight
- ~15 h 14 min
- Comfort score
- 75/100 · Great
What June feels like
Highs near 62°F (17°C) make for comfortable sightseeing weather.
After dark, temperatures fall to about 56°F (13°C).
Expect regular rain: about 5.0 in (127 mm) falls in the month.
Long days help: there are roughly 15 h 14 min of daylight mid-month.
Plan around June
June is shoulder season: good weather, a step below the best months (September).
- Longest days of the year, about 15 h 14 min of daylight.
- The year's biggest warm-up: highs jump 5°C (8°F) from May.
- Comfort improves from 63/100 in May to 75/100.
- June sits inside the May – Oct window our Boston to Portland route recommends.
What to pack for June
- A warm layer for eveningsnights drop to 56°F
- Rain jacket and waterproof shoes5.0 in of rain on average
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Portland, Maine in June
With conditions on your side, the picks below favor time outside.
Casco Bay Lines
Ferries to Peaks Island and the outer islands for a cheap harbor cruise.
Why now Our curated notes say it's best summer.
Duckfat
Small sandwich shop famous for fries cooked in duck fat.
Eventide Oyster Co.
Oyster bar known for its brown-butter lobster roll on a steamed bun.
Eastern Promenade
Hilltop park and trail with views over Casco Bay and its islands.
Why now June scores 75/100 for comfort, good conditions for being outside.
Portland Head Light
Maine's oldest lighthouse (1791) on cliffs in Fort Williams Park.
Why now Highs near 62°F and 5.0 in of monthly rain make this an easy outdoor pick.
Nearby in June
- Portsmouth in June~48 mi · highs 67°F, 4.6 in rain · 3°C (5°F) warmer by day, about as wet
- Maine in June~51 mi · highs 73°F, 5.3 in rain · 6°C (11°F) warmer by day, about as wet
- White Mountains in June~67 mi · highs 53°F, 5.2 in rain · 5°C (10°F) cooler by day, about as wet
- New Hampshire in June~73 mi · highs 76°F, 4.5 in rain · 8°C (14°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.
Portland, Maine in June: quick answers
Is June a good time to visit Portland, Maine?
It's a good shoulder-season choice, scoring 75/100 against a best of 87 in September. Expect highs of 62°F (17°C) and 5.0 in (127 mm) of rain. June is inside the May – Oct window our Boston to Portland route recommends.
How cold is Portland, Maine in June?
Average highs are 62°F (17°C) and average lows 56°F (13°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Portland, Maine in June?
Yes: about 5.0 in (127 mm) of rain falls across June on average, the 3rd-wettest month of the year. The annual total is about 53.7 in (1363 mm).
What should I pack for Portland, Maine in June?
Bring a warm layer for evenings (nights drop to 56°F), rain jacket and waterproof shoes (5.0 in of rain on average) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Portland, Maine
Routes in season in June
- Boston to Portland May – Oct
Planning Portland, Maine in June?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.