# Boundary Bay, United States: what it is and when to go > Boundary Bay is a bay of the Salish Sea on the Canada–United States border. Interests: Nature. The best time to visit is April to October. In June there are 15 h 58 of daylight, and in December, 8 h 02. It has articles in 6 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/america/estados-unidos/boundary-bay/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Bay of the Salish Sea on the Canada–United States border · Nature - **Where:** United States - **Best time:** April to October. - **Nearest airport:** SFO San Francisco, 1,266 km as the crow flies - **Coordinates:** 48.98529, -122.93114 ## What it is and where Boundary Bay is a bay of the Salish Sea on the Canada–United States border. It has articles in 6 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. Boundary Bay, intersected by the Canada–US border, was named by the US Coast Survey in 1855. Earlier charted in 1792 by Galiano and Valdes as “Enseñada del Engaño” (Gulf of Deception). Officially adopted 30 June 1913. Its coordinates are 48.98529, -122.93114; the nearest main airport is San Francisco International Airport (SFO, San Francisco), 1,266 km as the crow flies. How to get around United States (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=48.985285%2C-122.931144) - [Directions](https://www.google.com/maps/dir/?api=1&destination=48.985285%2C-122.931144) It is one of the [Nature](https://kokai.app/en/paises/america/estados-unidos/naturaleza/) places in United States. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Boundary Bay is **April to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 27 | | February | Possible | 9 h 54 | | March | Possible | 11 h 34 | | April | Best time | 13 h 28 | | May | Best time | 15 h 04 | | June | Best time | 15 h 58 | | July | Best time | 15 h 36 | | August | Best time | 14 h 11 | | September | Best time | 12 h 20 | | October | Best time | 10 h 30 | | November | Possible | 8 h 52 | | December | Possible | 8 h 02 | In June there are 15 h 58 of daylight, and in December, 8 h 02. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to United States in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#cuando-ir). ## Before you go to United States To enter United States there are 9 things to sort out before you leave, starting with “Book national parks and cars in advance”: they are all, with their deadlines, in [the United States checklist](https://kokai.app/en/paises/america/estados-unidos/#antes-de-salir). Currency: US dollar (USD); plugs: Type A and B · 120 V · 60 Hz (you need an adapter, and check your devices' voltage); emergencies: 911 for everything. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Boundary Bay Wildlife Management Area](https://kokai.app/en/paises/america/estados-unidos/boundary-bay-wildlife-management-area/): Wildlife Management Area in British Columbia, Canada · 7.1 km - [Semiahmoo Bay](https://kokai.app/en/paises/america/estados-unidos/semiahmoo-bay/): Bay straddling the international border in British Columbia, Canada and Washington, United States of America · 8.6 km - [Peace Arch Park](https://kokai.app/en/paises/america/estados-unidos/peace-arch-provincial-park/): International park between Canada and the United States · 13 km - [Peace Arch](https://kokai.app/en/paises/america/estados-unidos/peace-arch-international-monument/): Monument at the Canada-USA border · 13 km - [Birch Bay Waterslides](https://kokai.app/en/paises/america/estados-unidos/birch-bay-waterslides/): With kids · 14 km Distances are as the crow flies. Everything else is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). ## More in United States: Nature - [Niagara Falls](https://kokai.app/en/paises/america/estados-unidos/niagara-falls-2/): three waterfalls that straddle the international border between Canada and the United States - [Grand Canyon](https://kokai.app/en/paises/america/estados-unidos/grand-canyon-2/): steep-sided canyon carved by the Colorado River in Arizona, United States - [Yellowstone National Park](https://kokai.app/en/paises/america/estados-unidos/parque-nacional-de-yellowstone/): first national park in the world, located in Wyoming, Montana, and Idaho in the United States - [Denali](https://kokai.app/en/paises/america/estados-unidos/monte-denali/): highest mountain in North America, located in Alaska - [Mount Rushmore](https://kokai.app/en/paises/america/estados-unidos/mount-rushmore/): mountain in South Dakota featuring a sculpture of four US presidents - [Mauna Kea](https://kokai.app/en/paises/america/estados-unidos/mauna-kea/): Hawaiian volcano Every United States place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/naturaleza/). ## Frequently asked questions ### What is Boundary Bay? It is a bay of the Salish Sea on the Canada–United States border. It has articles in 6 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. ### When is the best time to visit Boundary Bay? April to October. In June there are 15 h 58 of daylight, and in December, 8 h 02. ### How do you get to Boundary Bay? The nearest main airport is San Francisco International Airport (SFO), 1,266 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=48.985285%2C-122.931144) opens the route on the map, and how to get around United States is explained in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the United States map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Boundary Bay Wildlife Management Area](https://kokai.app/en/paises/america/estados-unidos/boundary-bay-wildlife-management-area/), [Semiahmoo Bay](https://kokai.app/en/paises/america/estados-unidos/semiahmoo-bay/), [Peace Arch Park](https://kokai.app/en/paises/america/estados-unidos/peace-arch-provincial-park/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). Data from [OpenStreetMap](https://www.openstreetmap.org/relation/13321585), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q4949917), CC0. More about Boundary Bay on [Wikipedia](https://en.wikipedia.org/wiki/Boundary_Bay). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).