Places › Portland, ME
Portland, ME — best months to visit
Lighthouses, lobster, and a working waterfront in Maine.
Best months for Portland: June, September — cool days around 71°F, rain on about 9 days a month.
32°F
Rain 11 days
Daylight 9h 16mFEB
35°F
Rain 10 days
Daylight 10h 25mMAR
42°F
Rain 11 days
Daylight 11h 47mAPR
54°F
Rain 11 days
Daylight 13h 22mMAY
64°F
Rain 12 days
Daylight 14h 41mJUN
74°F
★ Best
Rain 12 days
Daylight 15h 25mJUL
80°F
Rain 11 days
Daylight 15h 08mAUG
79°F
Rain 9 days
Daylight 13h 59mSEP
71°F
★ Best
Rain 9 days
Daylight 12h 27mOCT
60°F
Rain 11 days
Daylight 10h 56mNOV
48°F
Rain 11 days
Daylight 9h 36mDEC
38°F
Rain 12 days
Daylight 8h 57m
Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.
Temperature band (low to high) in each month's color; pale bars behind = total rain for the month. 1991–2020 normals.
All twelve months
| Month | Score | Avg high | Avg low | Rain | Rain days | Daylight | Verdict |
|---|---|---|---|---|---|---|---|
| January | 18 | 32° | 16° | 3.50 in | 11 | 9h 16m | The toughest month |
| February | 24 | 35° | 17° | 3.54 in | 10 | 10h 25m | The toughest month |
| March | 39 | 42° | 26° | 4.08 in | 11 | 11h 47m | An off month |
| April | 74 | 54° | 35° | 4.41 in | 11 | 13h 22m | A good month |
| May | 88 | 64° | 46° | 3.67 in | 12 | 14h 41m | One of the best months |
| June ★ Best | 92 | 74° | 55° | 4.15 in | 12 | 15h 25m | One of the best months |
| July | 86 | 80° | 61° | 3.43 in | 11 | 15h 08m | One of the best months |
| August | 89 | 79° | 60° | 3.57 in | 9 | 13h 59m | One of the best months |
| September ★ Best | 93 | 71° | 52° | 3.77 in | 9 | 12h 27m | One of the best months |
| October | 79 | 60° | 41° | 5.25 in | 11 | 10h 56m | A good month |
| November | 64 | 48° | 32° | 4.25 in | 11 | 9h 36m | A shoulder month |
| December | 25 | 38° | 22° | 4.50 in | 12 | 8h 57m | The toughest month |
Score is rule-derived from the same normals — the rules are published on How we pick. Rain days = days with at least 0.01 in of precipitation.
June in Portland: one of the best months (score 92 of 100)
Typical June days in Portland reach about 74°F with nights near 55°F; days are long — about 15h 25m of daylight in mid-June.
- A light jacket or fleece for evenings.
- Layers — afternoons run about 19° warmer than mornings.
- A waterproof shell — rain falls on about 12 days in a typical June.
September in Portland: one of the best months (score 93 of 100)
Typical September days in Portland reach about 71°F with nights near 52°F.
- A light jacket or fleece for evenings.
- Layers — afternoons run about 19° warmer than mornings.
- A compact rain layer — about 9 days see rain in a typical September.