Decatur Reef
Dive site · United States
Advanced divers and up
Is it worth the trip?
64Good out of 100 for your dates
2 days tie for best
Mon 2 · 65 out of 100
- Sea
- 0.0 mflat
- Wind
- 0 kn
- Gusts
- 3kn
- Air
- 9°C
Tue 3 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 4 kn
- Gusts
- 7kn
- Air
- 12°C
Wed 4 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 5 kn
- Gusts
- 8kn
- Air
- 12°C
Thu 5 · 63 out of 100
- Sea
- 0.1 mflat
- Wind
- 6 kn
- Gusts
- 9kn
- Air
- 13°C
Fri 6 · 64 out of 100
- Sea
- 0.0 mflat
- Wind
- 3 kn
- Gusts
- 6kn
- Air
- 12°C
Sat 7 · 65 out of 100
- Sea
- 0.0 mflat
- Wind
- 2 kn
- Gusts
- 7kn
- Air
- 12°C
Sun 8 · 62 out of 100
- Sea
- 0.1 mflat
- Wind
- 8 kn
- Gusts
- 11kn
- Air
- 13°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Sun 165, good
- Mon 265, good
- Tue 364, good
- Wed 464, good
- Thu 563, good
- Fri 664, good
- Sat 765, good
- Sun 862, good
- Mon 964, good
- Tue 1064, good
The site in four facts
- Down to 18 mits deepest
- From a boathow you get in
- Advancedand up
- Faces Eswell 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 |
|---|---|---|---|---|---|
| Sun 1Nov | 65, good | 0.0 mflat | 1 kn | 4kn | 10°C |
| Mon 2Nov | 65, good | 0.0 mflat | 0 kn | 3kn | 9°C |
| Tue 3Nov | 64, good | 0.0 mflat | 4 kn | 7kn | 12°C |
| Wed 4Nov | 64, good | 0.0 mflat | 5 kn | 8kn | 12°C |
| Thu 5Nov | 63, good | 0.1 mflat | 6 kn | 9kn | 13°C |
| Fri 6Nov | 64, good | 0.0 mflat | 3 kn | 6kn | 12°C |
| Sat 7Nov | 65, good | 0.0 mflat | 2 kn | 7kn | 12°C |
| Sun 8Nov | 62, good | 0.1 mflat | 8 kn | 11kn | 13°C |
| Mon 9Nov | 64, good | 0.0 mflat | 2 kn | 8kn | 11°C |
| Tue 10Nov | 64, good | 0.0 mflat | 4 kn | 7kn | 12°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
- Sun 1 NovHigh 05:41 +0.6 mLow 11:05 −0.2 mHigh 16:47 +1.0 m
- Mon 2 NovLow 00:13 −1.4 mHigh 06:54 +0.6 mLow 12:46 −0.3 mHigh 18:18 +0.7 m
- Tue 3 NovLow 01:34 −1.1 mHigh 08:08 +0.6 mLow 14:21 −0.6 mHigh 20:03 +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
Decatur Reef 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
1 place
- Tyee Shoal 3.5 km away
About
the place in full, sources, credits
About Decatur Reef
A reef dive. It goes down to 18 m. You get in from a boat. It suits Advanced divers and up, as a dive guide states it. The coast faces E: swell from the E reaches it, and wind from the W blows out to sea. 1 dive centre or shop within 10 km, the nearest 6.2 km away. The town to stay in is Bainbridge Island. Within 5 km we also list 1 surf spot and 1 dive site.
- What it is Reef.
- How deep Down to 18 m.
- Getting in From a boat.
- Who it suits Suits Advanced divers and up, as a dive guide states it.
- Dive centres 1 dive centre or shop within 10 km, the nearest 6.2 km away.
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, May, Jun, Jul, Aug, Sep, Oct and Nov (under 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$945–US$1,740 each
about US$945–US$1,740 each · 6 nights, 2 sharing: flights, taxi, 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 30 October 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$516 |
| Taxi | airport and back, shared | about US$54–US$87 |
| Stay | 6 nights, a mid-range double, shared | about US$301–US$502 |
| Food | 7 days eating out | about US$342–US$636 |
| Total | about US$945–US$1,740 |
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: Bainbridge Island
15 min by car · 3 places to stay
about US$114/nightcountry average
About Bainbridge Island 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 30 October 2026.
Getting there: about 6h 45m
About 6h 45m door to door from Chicago
Fly MDW → SEA, direct, then 45 min by road
Flights MDW → SEA on your dates · Skyscanner
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Bainbridge Island · GetYourGuideDive gear hire in Bainbridge Island · GetYourGuide
Dive centres nearby
Exotic Aquatics 6.2 km
Jade Scuba Adventures 11 km
Seattle Scuba School 12 km
Discount Divers Supply 12 km
Underwater Sports 17 km
The nearest named dive centres and shops within 25 km, in a straight line; training agencies where the map states them. Listings, not a recommendation. Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Animals divers and surveys have recorded within 2 km of this site in the last 15 years. A record says someone saw it here, not that you will.
Common Porpoise Phocoena phocoenaWhale or dolphin
Seen in 3 records.
Zalophus californianusSeal or sea lion
Seen in 17 records, mostly Apr to Sep.
Common seal Phoca vitulinaSeal or sea lion
Seen in 9 records.
Records: OBIS (Ocean Biodiversity Information System, IOC-UNESCO), from the datasets named here, CC0 and CC BY records only. Names: WoRMS, through OBIS; common names from Wikidata. Largest datasets here: NWTRC JP04 Aerial Surveys 2014-2015; NWTRC Aerial Surveys in Puget Sound in 2016; NWTRC JP02 Marine Mammal Aerial Surveys in the Puget Sound 2013; 4e88f9c8-868e-4b0a-bc48-3d409a5448fe. 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.