Johnstone StraitJohnstone Strait is a roughly 110 km channel that runs along the northeast coast of Vancouver Island, bordered by a string of islands and the mainland British Columbia coast; it narrows to between about 2.5 km and 5 km in places. The strait was named by George Vancouver for James Johnstone, master of the armed tender Chatham, whose party helped show Vancouver Island is an island in 1792.
The waterway is a major navigation channel on the west coast of North America and forms part of the route vessels use when traveling between the Strait of Georgia, Queen Charlotte Strait and the open Pacific. There are no cities along the length of the strait; small settlements and access points on Vancouver Island include Telegraph Cove and Robson Bight near the north end, with Sayward and Kelsey Bay farther south.
Ecologically the strait is important: a resident population of orcas frequents the area in summer and Robson Bight (Michael Bigg) Ecological Reserve protects key shoreline habitat. Visiting the strait usually means joining a boat or kayak trip from a coastal launch point, and conditions can be changeable because of tides and weather.
- Orca watching: Summer months bring regular sightings of a locally studied orca population, often visible from guided boats and sea kayaks.
- Robson Bight (Michael Bigg) Ecological Reserve: A protected shoreline reserve important for marine mammals and a focus of conservation and research in the strait.
- Island-studded coastline: The strait is lined with many forested islands and narrow channels that make for dramatic coastal scenery from the water.
- Telegraph Cove access: Telegraph Cove near the strait’s north end is a common launch point for wildlife tours and small-boat excursions.
Best Time to Visit Johnstone Strait#
Weather and wildlife patterns guide the best times to visit the strait; summer offers the calmest conditions and the most reliable orca presence, while other seasons are quieter but wetter.
Weather & Climate near Johnstone Strait#
Johnstone Strait's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in August) and cold winters (coldest in January). Temperatures range from 0°C to 20°C. Heavy rainfall (2341 mm/year), wettest in November.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | 0° - 5° | -1° | 327 mm | overcast | 94% | 4.0 m/s | 0.1 low | 8.4h |
| February | Poor | 1° - 7° | 1° | 210 mm | overcast | 89% | 3.8 m/s | 0.2 low | 9.9h |
| March | Poor | 2° - 9° | 2° | 191 mm | overcast | 87% | 3.6 m/s | 0.4 low | 11.7h |
| April | Poor | 3° - 12° | 5° | 147 mm | overcast | 81% | 3.6 m/s | 0.8 moderate | 13.6h |
| May | Acceptable | 6° - 15° | 10° | 107 mm | overcast | 79% | 3.4 m/s | 1.2 high | 15.3h |
| June | Good | 8° - 18° | 13° | 97 mm | overcast | 80% | 3.4 m/s | 1.4 high | 16.2h |
| July | Good | 10° - 20° | 15° | 64 mm | partly cloudy | 82% | 3.3 m/s | 1.5 very high | 15.7h |
| August | Good | 10° - 21° | 15° | 90 mm | partly cloudy | 83% | 3.0 m/s | 1.2 high | 14.3h |
| September | Good | 8° - 18° | 13° | 105 mm | partly cloudy | 85% | 2.9 m/s | 0.8 moderate | 12.5h |
| October | Poor | 5° - 13° | 7° | 305 mm | overcast | 88% | 3.4 m/s | 0.3 low | 10.6h |
| November | Poor | 3° - 8° | 3° | 383 mm | overcast | 92% | 4.0 m/s | 0.1 low | 8.8h |
| December | Poor | 1° - 5° | -1° | 315 mm | overcast | 94% | 3.9 m/s | 0.0 low | 7.9h |
How to Get to Johnstone Strait#
Primary local access points on Vancouver Island are small coastal settlements such as Telegraph Cove and Sayward; larger population centers on the island include Nanaimo to the south. Regional airports serving northern Vancouver Island include Campbell River and Comox/Comox Valley, while the nearest major long-distance rail and intercity passenger hub is on the mainland at Vancouver (Pacific Central Station).
The final stretch into the strait is by water: most visitors join a tour, charter or kayak from a harbour or marina at Telegraph Cove or other nearby launch points, or arrange private boat transfers; expect limited road access and sparse services along much of the shoreline.
Tips for Visiting Johnstone Strait#
- Book wildlife boat or kayak trips in advance during summer as operators and spaces can fill up.
- Follow local guidelines and give orcas and other marine mammals plenty of space; do not attempt to approach them by small craft.
- Bring warm, waterproof layers and a windproof outer layer because conditions on the water can be chilly and change quickly.
- Expect limited facilities along much of the strait; plan fuel, food and overnight arrangements in advance.
- Check tidal and weather conditions before setting out and consider guided trips if unfamiliar with coastal navigation.