Staying Home Sucks, home
ISS026-E-5109 - View of The Bahamas
Black Point, the nearest town, 17 km away. Photo: Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center, Public domain, Wikimedia Commons

Thunderball Grotto

Dive site · Bahamas

Open Water divers and up

Scored for Advanced divers

Is it worth the trip?

84Good out of 100 for your dates

Home sucks

2 days tie for best

Each day of your trip, out of 100

Tue 3 · 68 out of 100

Sea
0.8 m
Wind
5 kn
Gusts
9kn
Air
27°C

Wed 4 · 69 out of 100

Sea
0.8 m
Wind
3 kn
Gusts
8kn
Air
28°C

Thu 5 · 85 out of 100

Sea
0.9 m
Wind
12 kn
Gusts
17kn
Air
28°C

Fri 6 · 81 out of 100

Sea
1.1 m
Wind
12 kn
Gusts
17kn
Air
28°C

Sat 7 · 86 out of 100

Sea
0.9 m
Wind
8 kn
Gusts
13kn
Air
27°C

Sun 8 · 88 out of 100

Sea
0.7 m
Wind
5 kn
Gusts
13kn
Air
28°C

Mon 9 · 88 out of 100

Sea
0.6 m
Wind
7 kn
Gusts
12kn
Air
28°C

Tap a day for sea, wind and water. Full forecast

Forecast: next 9 days

Full forecast
  1. Mon 276, good
  2. Tue 368, good
  3. Wed 469, good
  4. Thu 585, good
  5. Fri 681, good
  6. Sat 786, good
  7. Sun 888, good
  8. Mon 988, good
  9. Tue 1085, good

The site in five facts

  • Down to 8 mits deepest
  • From a boathow you get in
  • Open Waterand up
  • Water 28 °C3 mm wetsuit
  • Faces NEswell 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.

Sea and wind forecast and score for each day at Thunderball Grotto
DayScoreSeaWindGustsAir
Mon 2Nov76, good1.1 m9 kn18kn28°C
Tue 3Nov68, good0.8 m5 kn9kn27°C
Wed 4Nov69, good0.8 m3 kn8kn28°C
Thu 5Nov85, good0.9 m12 kn17kn28°C
Fri 6Nov81, good1.1 m12 kn17kn28°C
Sat 7Nov86, good0.9 m8 kn13kn27°C
Sun 8Nov88, good0.7 m5 kn13kn28°C
Mon 9Nov88, good0.6 m7 kn12kn28°C
Tue 10Nov85, good0.5 m10 kn19kn27°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 01:17 +0.3 mLow 07:15 −0.3 mHigh 13:51 +0.5 mLow 20:17 −0.3 m
  • Tue 3 NovHigh 02:24 +0.3 mLow 08:26 −0.3 mHigh 14:51 +0.5 mLow 21:12 −0.3 m
  • Wed 4 NovHigh 03:26 +0.4 mLow 09:35 −0.3 mHigh 15:48 +0.4 mLow 22:02 −0.3 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

No month stands out

Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).

  1. Jan6of 7: a trip from Sat 2 Jan
  2. Feb6of 7: a trip from Sat 6 Feb
  3. Mar6of 7: a trip from Sat 6 Mar
  4. Apr7of 7: a trip from Sat 3 Apr
  5. May7of 7: a trip from Sat 1 May
  6. Jun7of 7: a trip from Sat 5 Jun
  7. Jul7of 7: a trip from Sat 3 Jul
  8. Aug7of 7: a trip from Sat 7 Aug
  9. Sep7of 7: a trip from Sat 4 Sept
  10. Oct6of 7: a trip from Sat 2 Oct
  11. Nov6of 7: a trip from Tue 3 Nov
  12. Dec6of 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

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.

About

the place in full, sources, credits

About Thunderball Grotto

A cave dive. It goes down to 8 m. You get in from a boat. It suits Open Water divers and up, as a dive guide states it. The coast faces NE: swell from the NE reaches it, and wind from the SW blows out to sea. No dive centre within 50 km on the map: book a liveaboard or a boat from further off. The sea is about 25°C in January, its coldest month (3 mm wetsuit), and 30°C in August, its warmest (rash vest or 1 to 2 mm). The town to stay in is Black Point.

  • What it is Cave.
  • How deep Down to 8 m.
  • Getting in From a boat.
  • Who it suits Suits Open Water divers and up, as a dive guide states it.
  • Dive centres No dive centre within 50 km on the map: book a liveaboard or a boat from further off.

Water about 28°C: 3 mm wetsuit. Typical sea temperature for the time of year, not a forecast.

Visibility about 30 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Apr, Jul, Aug and Sep (over 30 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$1,080–US$1,960 each

about US$1,080–US$1,960 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 
Rough cost per person for this trip
WhatHow we worked it outEach
Flightsreturn ORD to NAS, estimated from distance and season, 2 airlines on the route, with a hold bagabout US$208–US$435
Hire car6 days, sharedabout US$167–US$275
Stay6 nights, a mid-range double, sharedabout US$328–US$549
Food7 days eating outabout US$375–US$697
Totalabout US$1,080–US$1,960

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: Black Point

Closest

Black Point

about 30 min by car

about US$121/nightcountry average

See places to stay in Black Point · Booking.com

About Black Point its beds, food and every spot near it

Nearest town: Black Point, 17 km. We have not checked places to stay in Black Point yet. The nearest beds we have counted are in Jimmy Hill, 88 km away. Search before you plan on staying there.

About US$121 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 9h 40m

About 9h 40m door to door from Chicago

Fly ORD → NAS, direct, then 2h 50m by road

An estimate, one way; the journey never changes the score.

In the water

Dive centres nearby

No dive centre mapped within 50 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.