Maine Diner · Portland
The Porthole
Diner-style restaurant on Custom House Wharf, serving breakfast and Casco Bay seafood; it came through the December 2025 wharf fire across the way.
20 Custom House Wharf, Portland, ME 04101
What we checked
- On our lists
- Diners
- Known for
- Twin Lobster Dinner; breakfast
- Kind of place
- Seafood
- Maine liquor license (BABLO)
- Class A Restaurant/Lounge
Checked open in October 2026 against a 2025 or 2026 source: the place's own site or menu, local news, or a town or chamber listing. Hours and menus change, so check with The Porthole before you go. Hours, photos and ratings are Apple Maps' own, in its place card. To look up inspections, use the State of Maine's health inspection search. Something wrong? Tell us.
Nearby on our lists
- ScalesPortland · 0.0 mi · James Beard honoree
- Gilbert's Chowder HousePortland · 0.0 mi · clam shack
- J's OysterPortland · 0.1 mi · oyster bar
- Luke's Lobster Portland PierPortland · 0.1 mi · lobster roll
- Standard Baking Co.Portland · 0.1 mi · James Beard honoree
- Fore StreetPortland · 0.1 mi · James Beard honoree
More: Diners · Portland page · Greater Portland & Casco Bay page
Save it for the drive
The free Maine Eats app has The Porthole and 4,215 other Maine places, sorted by distance from you, with Apple Maps' live hours and photos.
An iPhone and iPad app, free. Not in the App Store yet.