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Turn Rock
Dive site · United States
Advanced divers and up
Is it worth the trip?
64Good out of 100 for your dates
4 days tie for best
Tue 3 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 1 kn
- Gusts
- 5kn
- Air
- 11°C
Wed 4 · 64 out of 100
- Sea
- 0.1 mflat
- Wind
- 1 kn
- Gusts
- 6kn
- Air
- 13°C
Thu 5 · 63 out of 100
- Sea
- 0.1 mflat
- Wind
- 4 kn
- Gusts
- 9kn
- Air
- 11°C
Fri 6 · 60 out of 100
- Sea
- 0.2 mflat
- Wind
- 11 kn
- Gusts
- 29knboats in
- Air
- 12°C
Sat 7 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 2 kn
- Gusts
- 8kn
- Air
- 13°C
Sun 8 · 63 out of 100
- Sea
- 0.1 mflat
- Wind
- 6 kn
- Gusts
- 16knboats in
- Air
- 11°C
Mon 9 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 3 kn
- Gusts
- 9knboats in
- Air
- 11°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Mon 265, good
- Tue 364, good
- Wed 464, good
- Thu 563, good
- Fri 660, good
- Sat 764, good
- Sun 863, good
- Mon 964, good
- Tue 100, poor
- Wed 110, poor
The site in five facts
- Down to 21 mits deepest
- From a boathow you get in
- Advancedand up
- Water 9 °Cdrysuit
- Faces Sswell from there reaches it
Full forecast
every day, every number
The score doesn't know currents, the visibility on the day or your certification.
Suits Advanced divers and up, as a dive guide states it. Scored for Advanced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Mon 2Nov | 65, good | 0.0 mflat | 1 kn | 6kn | 10°C |
| Tue 3Nov | 64, good | 0.0 mflat | 1 kn | 5kn | 11°C |
| Wed 4Nov | 64, good | 0.1 mflat | 1 kn | 6kn | 13°C |
| Thu 5Nov | 63, good | 0.1 mflat | 4 kn | 9kn | 11°C |
| Fri 6Nov | 60, good | 0.2 mflat | 11 kn | 29knboats in | 12°C |
| Sat 7Nov | 64, good | 0.0 mflat | 2 kn | 8kn | 13°C |
| Sun 8Nov | 63, good | 0.1 mflat | 6 kn | 16knboats in | 11°C |
| Mon 9Nov | 64, good | 0.0 mflat | 3 kn | 9knboats in | 11°C |
| Tue 10Nov | 0, poor | 0.6 m | 23 kn | 44knboats in | 12°C |
| Wed 11Nov | 0, poor | 0.4 m | 16 kn | 35knboats in | 9°C |
Sea is the waves near the site, in metres; wind and gusts in knots. "Boats in": gusts that keep dive boats in. More
Tide
- Mon 2 NovLow 00:47 −1.4 mHigh 07:36 +0.6 mLow 13:36 −0.2 mHigh 18:30 +0.7 m
- Tue 3 NovLow 01:57 −1.2 mHigh 08:32 +0.7 mLow 14:52 −0.5 mHigh 20:07 +0.6 m
- Wed 4 NovLow 02:58 −1.1 mHigh 09:15 +0.9 mLow 15:51 −0.9 mHigh 21:32 +0.6 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Slack water, the safest time to dive where there is current, is about half an hour either side of each high and low. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Map
the site and its town
Turn Rock on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.
One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
More diving near here
2 places
- Shark Reef 6.7 km away
- Shirt Tail Reef 7.2 km away
About
the place in full, sources, credits
About Turn Rock
A reef dive. It goes down to 21 m. You get in from a boat. It suits Advanced divers and up, as a dive guide states it. The coast faces S: swell from the S reaches it, and wind from the N blows out to sea. No dive centre within 10 km, the nearest 26 km away. The sea is about 8°C in January, its coldest month (drysuit), and 14°C in August, its warmest (7 mm semi-dry or a drysuit). The town to stay in is Friday Harbor.
- What it is Reef.
- How deep Down to 21 m.
- Getting in From a boat.
- Who it suits Suits Advanced divers and up, as a dive guide states it.
- Dive centres No dive centre within 10 km, the nearest 26 km away.
Water about 9°C: drysuit. Typical sea temperature for the time of year, not a forecast.
Visibility under 5 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Jan, Feb, Mar, Apr, Sep, Oct and Nov (about 5 m).
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,050–US$1,910 each
about US$1,050–US$1,910 each · 6 nights, 2 sharing: flights, hire car, stay, food.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return MDW to SEA, estimated from distance and season, 1 airline on the route, with a hold bag | about US$248–US$517 |
| Hire car | 6 days, shared | about US$154–US$255 |
| Stay | 6 nights, a mid-range double, shared | about US$302–US$503 |
| Food | 7 days eating out | about US$342–US$637 |
| Total | about US$1,050–US$1,910 |
Guided dives are not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.
Where to stay: Friday Harbor
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 10 min by car · 33 places to stay
about US$114/nightcountry average
About Friday Harbor its beds, food and every spot near it
About US$114 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
Getting there: about 8h 35m
About 8h 35m door to door from Chicago
Fly MDW → SEA, direct, then 2h 35m by road
Flights MDW → SEA on your dates · AviasalesAd
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Friday Harbor · GetYourGuideDive gear hire in Friday Harbor · GetYourGuide
Dive centres nearby
No dive centre mapped within 25 km.
Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Too few records at this site itself, so these are the animals divers and surveys have recorded at other sites within 25 km in the last 15 years. A record says someone saw it there, not that you will.
Red Rock Crab Cancer productus
Seen in 282 records, mostly Aug to Oct.
Dungeness Crab Metacarcinus magister
Seen in 121 records, mostly May to Oct.
Slender Crab Metacarcinus gracilis
Seen in 43 records, mostly May to Oct.
Oregonia gracilis
Seen in 32 records, mostly Apr to Jun.
Telmessus cheiragonus
Seen in 7 records.
Agonopsis vulsa
Seen in 5 records.
Dasycottus setiger
Seen in 5 records.
Liparis dennyi
Seen in 5 records.
Gadus chalcogrammus
Seen in 3 records.
Icelinus borealis
Seen in 3 records.
Records: OBIS (Ocean Biodiversity Information System, IOC-UNESCO) and GBIF.org (1 November 2026, doi:10.15468/dl.jeesns), from the datasets named here, CC0 and CC BY records only. Names: WoRMS and GBIF; common names from the Catalogue of Life, the GBIF Backbone and Wikidata. Largest datasets here: debc8f44-f70f-4d30-821e-d3a705f62cfb; 28621175-b49c-4fbf-9f60-9b82d78b7b0c; 5061d21c-6161-4ea2-a8d4-38f8285dfc47; 4e88f9c8-868e-4b0a-bc48-3d409a5448fe; Harbour seal (Phoca vitulina) counts and haulout locations in the Strait of Georgia, British Columbia coast. Credits
This week's visibility and the current no free forecast gives. Ask a dive centre before you book.
Saved: this link opens the same trip
The link holds the trip itself: nothing about you is kept. Check the forecast again before you book.