Advanced divers and up
Is it worth the trip?
56Fair out of 100 for your dates
Best on Tue 3: Sea 0.4 m, Visibility under 5 m, Water 10 °C
Tue 3 · 62 out of 100
- Sea
- 0.4 m
- Wind
- 0 kn
- Gusts
- 1kn
- Air
- 12°C
Wed 4 · 54 out of 100
- Sea
- 0.8 m
- Wind
- 12 kn
- Gusts
- 18kn
- Air
- 12°C
Thu 5 · 61 out of 100
- Sea
- 0.6 m
- Wind
- 1 kn
- Gusts
- 2kn
- Air
- 11°C
Fri 6 · 59 out of 100
- Sea
- 0.6 m
- Wind
- 9 kn
- Gusts
- 13kn
- Air
- 13°C
Sat 7 · 58 out of 100
- Sea
- 0.9 m
- Wind
- 7 kn
- Gusts
- 8kn
- Air
- 13°C
Sun 8 · 21 out of 100
- Sea
- 1.5 m
- Wind
- 6 kn
- Gusts
- 24knboats in
- Air
- 13°C
Mon 9 · 49 out of 100
- Sea
- 1.2 m
- Wind
- 12 kn
- Gusts
- 15kn
- Air
- 11°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Mon 255, fair
- Tue 362, good
- Wed 454, fair
- Thu 561, good
- Fri 659, fair
- Sat 758, fair
- Sun 821, poor
- Mon 949, fair
- Tue 1016, poor
- Wed 1151, fair
The site in six facts
- Down to 20 mits deepest
- From a boathow you get in
- Advancedand up
- Water 10 °C7 mm semi-dry or a drysuit
- Faces SEswell from there reaches it
- Best in Jul7 good days in 7
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 | 55, fair | 0.7 m | 12 kn | 16kn | 15°C |
| Tue 3Nov | 62, good | 0.4 m | 0 kn | 1kn | 12°C |
| Wed 4Nov | 54, fair | 0.8 m | 12 kn | 18kn | 12°C |
| Thu 5Nov | 61, good | 0.6 m | 1 kn | 2kn | 11°C |
| Fri 6Nov | 59, fair | 0.6 m | 9 kn | 13kn | 13°C |
| Sat 7Nov | 58, fair | 0.9 m | 7 kn | 8kn | 13°C |
| Sun 8Nov | 21, poor | 1.5 m | 6 kn | 24knboats in | 13°C |
| Mon 9Nov | 49, fair | 1.2 m | 12 kn | 15kn | 11°C |
| Tue 10Nov | 16, poor | 1.3 m | 20 kn | 30knboats in | 10°C |
| Wed 11Nov | 51, fair | 0.8 m | 16 kn | 27kn | 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 NovHigh 01:44 +0.6 mLow 08:05 −0.5 mHigh 13:51 +0.6 mLow 20:41 −0.7 m
- Tue 3 NovHigh 02:51 +0.6 mLow 09:18 −0.5 mHigh 15:02 +0.6 mLow 21:46 −0.7 m
- Wed 4 NovHigh 03:54 +0.6 mLow 10:24 −0.6 mHigh 16:11 +0.6 mLow 22:44 −0.7 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.
Best time to go
best in Jul
Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).
- Jan3of 7: a trip from Sat 2 Jan
- Feb3of 7: a trip from Sat 6 Feb
- Mar4of 7: a trip from Sat 6 Mar
- Apr4of 7: a trip from Sat 3 Apr
- May6of 7: a trip from Sat 1 May
- Jun6of 7: a trip from Sat 5 Jun
- Jul7of 7: a trip from Sat 3 Jul
- Aug6of 7: a trip from Sat 7 Aug
- Sep5of 7: a trip from Sat 4 Sept
- Oct5of 7: a trip from Sat 2 Oct
- Nov4of 7: a trip from Tue 3 Nov
- Dec3of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast: the sea and the mean wind of each day, with no gusts or rain in the history.
Map
the site and its town
Big Ledge 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
3 places
- Gull Ledge 20 km away
- Southwest Ledge 20.4 km away
- Ovens Reef 26.4 km away
About
the place in full, sources, credits
About Big Ledge
A reef dive. It goes down to 20 m. You get in from a boat. It suits Advanced divers and up, as a dive guide states it. The coast faces SE: swell from the SE reaches it, and wind from the NW blows out to sea. No dive centre within 10 km, the nearest 40 km away. The sea is about 2°C in February, its coldest month (drysuit), and 17°C in August, its warmest (7 mm wetsuit and hood). For Advanced divers the best month is usually July, with about 7 good days in 7; in January, February and December, about 3. From the weather of past years. The town to stay in is Lunenburg. Within 5 km we also list 1 dive site.
- What it is Reef.
- How deep Down to 20 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 40 km away.
Water about 10°C: 7 mm semi-dry or a 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 Jul (about 8 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$919–US$1,680 each
about US$919–US$1,680 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 ORD to YHZ, estimated from distance and season, 2 airlines on the route, with a hold bag | about US$201–US$423 |
| Hire car | 6 days, shared | about US$134–US$228 |
| Stay | 6 nights, a mid-range double, shared | about US$275–US$456 |
| Food | 7 days eating out | about US$309–US$577 |
| Total | about US$919–US$1,680 |
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: Lunenburg
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 50 min by car · 25 places to stay
about US$101/nightcountry average
About Lunenburg its beds, food and every spot near it
About US$101 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 05m
About 8h 05m door to door from Chicago
Fly ORD → YHZ, direct, then 1h 20m by road
Flights ORD → YHZ on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Lunenburg · GetYourGuideDive gear hire in Lunenburg · GetYourGuide
Dive centres nearby
No dive centre mapped within 25 km.
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's visibility, the current and the life no free forecast gives. Ask a dive centre before you book.