The Chimney at Great Dog Island
Dive site · British Virgin Islands
Is it worth the trip?
79Good out of 100 for your dates
2 days tie for best
Mon 2 · 78 out of 100
- Sea
- 0.6 m
- Wind
- 11 kn
- Gusts
- 18kn
- Air
- 29°C
Tue 3 · 78 out of 100
- Sea
- 0.6 m
- Wind
- 12 kn
- Gusts
- 16kn
- Air
- 29°C
Wed 4 · 80 out of 100
- Sea
- 0.4 m
- Wind
- 7 kn
- Gusts
- 10kn
- Air
- 29°C
Thu 5 · 81 out of 100
- Sea
- 0.3 m
- Wind
- 4 kn
- Gusts
- 8kn
- Air
- 28°C
Fri 6 · 80 out of 100
- Sea
- 0.3 m
- Wind
- 6 kn
- Gusts
- 9kn
- Air
- 28°C
Sat 7 · 81 out of 100
- Sea
- 0.2 mflat
- Wind
- 6 kn
- Gusts
- 13kn
- Air
- 28°C
Sun 8 · 72 out of 100
- Sea
- 0.2 mflat
- Wind
- 5 kn
- Gusts
- 12kn
- Air
- 28°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Sun 178, good
- Mon 278, good
- Tue 378, good
- Wed 480, good
- Thu 581, good
- Fri 680, good
- Sat 781, good
- Sun 872, good
- Mon 982, good
- Tue 1082, good
The site in five facts
- Down to 12 mits deepest
- From a boathow you get in
- Open Waterand up
- Water 29 °Crash vest or 1 to 2 mm
- Faces Nswell 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 Open Water divers and up, as a dive guide states it. Scored for Advanced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Sun 1Nov | 78, good | 0.5 m | 14 kn | 19kn | 29°C |
| Mon 2Nov | 78, good | 0.6 m | 11 kn | 18kn | 29°C |
| Tue 3Nov | 78, good | 0.6 m | 12 kn | 16kn | 29°C |
| Wed 4Nov | 80, good | 0.4 m | 7 kn | 10kn | 29°C |
| Thu 5Nov | 81, good | 0.3 m | 4 kn | 8kn | 28°C |
| Fri 6Nov | 80, good | 0.3 m | 6 kn | 9kn | 28°C |
| Sat 7Nov | 81, good | 0.2 mflat | 6 kn | 13kn | 28°C |
| Sun 8Nov | 72, good | 0.2 mflat | 5 kn | 12kn | 28°C |
| Mon 9Nov | 82, good | 0.3 m | 0 kn | 5kn | 28°C |
| Tue 10Nov | 82, good | 0.3 m | 3 kn | 9kn | 29°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 00:59 +0.0 mLow 06:55 −0.2 mHigh 14:18 +0.3 mLow 21:11 −0.1 m
- Mon 2 NovHigh 02:18 +0.1 mLow 08:10 −0.2 mHigh 15:18 +0.3 mLow 22:01 −0.1 m
- Tue 3 NovHigh 03:39 +0.1 mLow 09:34 −0.1 mHigh 16:16 +0.2 mLow 22:48 −0.1 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
The Chimney at Great Dog Island on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
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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
5 places
- Joe's Cave 0.9 km away
- Wall to Wall 1 km away
- Flintstones 1.1 km away
- Shark Point 2.2 km away
- Bronco Billy 2.7 km away
About
the place in full, sources, credits
About The Chimney at Great Dog Island
A cave dive. It goes down to 12 m. You get in from a boat. It suits Open Water divers and up, as a dive guide states it. The coast faces N: swell from the N reaches it, and wind from the S blows out to sea. 1 dive centre or shop within 10 km, the nearest 6.3 km away. The sea is about 27°C in January, its coldest month (3 mm wetsuit), and 29°C in July, its warmest (rash vest or 1 to 2 mm). The town to stay in is Spanish Town. Within 5 km we also list 9 dive sites.
- What it is Cave.
- How deep Down to 12 m.
- Getting in From a boat.
- Who it suits Suits Open Water divers and up, as a dive guide states it.
- Dive centres 1 dive centre or shop within 10 km, the nearest 6.3 km away.
Water about 29°C: rash vest or 1 to 2 mm. Typical sea temperature for the time of year, not a forecast.
Visibility about 15 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Mar, Apr and May (about 20 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$804–US$1,510 each
about US$804–US$1,510 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 30 October 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return ORD to STT, estimated from distance and season, 2 airlines on the route, with a hold bag | about US$281–US$590 |
| Hire car | 6 days, shared | about US$100–US$174 |
| Stay | 6 nights, a mid-range double, shared | about US$201–US$328 |
| Food | 7 days eating out | about US$221–US$415 |
| Total | about US$804–US$1,510 |
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: Spanish Town
12 min by car · 15 places to stay
About Spanish Town its beds, food and every spot near it
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 9h 55m
About 9h 55m door to door from Chicago
Fly ORD → STT, direct, then 1h 20m by road
Flights ORD → STT on your dates · Skyscanner
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Spanish Town · GetYourGuideDive gear hire in Spanish Town · GetYourGuide
Dive centres nearby
Dive BVI 6.3 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
Too few open records near this site to list its animals. Ask a dive centre what you are likely to see.
This week: visibility about 20 m, clearer than usual (satellite plankton reading, 24 Oct). Estimated from the month's typical visibility and this week's satellite chlorophyll against the site's normal; heavy rain before a dive can still muddy it.
The current and the life no free forecast gives. Ask a dive centre before you book.