Grid Iron
Dive site · Saint Kitts and Nevis
Advanced divers and up
Is it worth the trip?
76Good out of 100 for your dates
Best on Thu 5: Sea 0.6 m, Visibility about 15 m, Water 29 °C
Tue 3 · 75 out of 100
- Sea
- 1.0 m
- Wind
- 10 kn
- Gusts
- 13kn
- Air
- 29°C
Wed 4 · 78 out of 100
- Sea
- 0.8 m
- Wind
- 7 kn
- Gusts
- 10kn
- Air
- 29°C
Thu 5 · 79 out of 100
- Sea
- 0.6 m
- Wind
- 5 kn
- Gusts
- 10kn
- Air
- 29°C
Fri 6 · 78 out of 100
- Sea
- 0.6 m
- Wind
- 8 kn
- Gusts
- 11kn
- Air
- 29°C
Sat 7 · 74 out of 100
- Sea
- 1.0 m
- Wind
- 11 kn
- Gusts
- 15kn
- Air
- 28°C
Sun 8 · 67 out of 100
- Sea
- 0.9 m
- Wind
- 8 kn
- Gusts
- 12kn
- Air
- 28°C
Mon 9 · 71 out of 100
- Sea
- 0.6 m
- Wind
- 1 kn
- Gusts
- 6kn
- Air
- 28°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 9 days
Full forecast- Mon 268, good
- Tue 375, good
- Wed 478, good
- Thu 579, good
- Fri 678, good
- Sat 774, good
- Sun 867, good
- Mon 971, good
- Tue 1071, good
The site in six facts
- Down to 24 mits deepest
- From a boathow you get in
- Advancedand up
- Water 29 °Crash vest or 1 to 2 mm
- Faces NEswell from there reaches it
- Best May, Aug–Sep6 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 | 68, good | 1.2 m | 13 kn | 17kn | 30°C |
| Tue 3Nov | 75, good | 1.0 m | 10 kn | 13kn | 29°C |
| Wed 4Nov | 78, good | 0.8 m | 7 kn | 10kn | 29°C |
| Thu 5Nov | 79, good | 0.6 m | 5 kn | 10kn | 29°C |
| Fri 6Nov | 78, good | 0.6 m | 8 kn | 11kn | 29°C |
| Sat 7Nov | 74, good | 1.0 m | 11 kn | 15kn | 28°C |
| Sun 8Nov | 67, good | 0.9 m | 8 kn | 12kn | 28°C |
| Mon 9Nov | 71, good | 0.6 m | 1 kn | 6kn | 28°C |
| Tue 10Nov | 71, good | 0.6 m | 1 kn | 7kn | 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
- Mon 2 NovLow 04:58 −0.1 mHigh 14:46 +0.1 m
- Tue 3 NovLow 05:57 −0.1 mHigh 14:41 +0.1 mLow 22:33 +0.0 m
- Wed 4 NovHigh 01:02 +0.1 mLow 06:57 +0.0 mHigh 14:34 +0.1 mLow 21:33 +0.0 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 May, Aug–Sep
Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).
- Jan4of 7: a trip from Sat 2 Jan
- Feb3of 7: a trip from Sat 6 Feb
- Mar4of 7: a trip from Sat 6 Mar
- Apr5of 7: a trip from Sat 3 Apr
- May6of 7: a trip from Sat 1 May
- Jun5of 7: a trip from Sat 5 Jun
- Jul5of 7: a trip from Sat 3 Jul
- Aug6of 7: a trip from Sat 7 Aug
- Sep6of 7: a trip from Sat 4 Sept
- Oct5of 7: a trip from Sat 2 Oct
- Nov5of 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
Grid Iron 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
- Brassball Wreck 5.3 km away
- Nag's Head 6.2 km away
- Monkey Shoals 6.7 km away
- MV River Taw Wreck 6.7 km away
- Coconut Tree Reef 8.8 km away
About
the place in full, sources, credits
About Grid Iron
A reef dive. It goes down to 24 m. You get in from a boat. It suits Advanced 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. 1 dive centre or shop within 10 km, the nearest 9.4 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). For Advanced divers the best months are usually May, August and September, with about 6 good days in 7; in February and December, about 3. From the weather of past years. The town to stay in is Basseterre. Within 5 km we also list 1 surf spot, 1 wind sports spot and 1 dive site.
- What it is Reef.
- How deep Down to 24 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 9.4 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 Jan, Feb, Mar, Apr, May and Sep (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$811–US$1,520 each
about US$811–US$1,520 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 SXM, estimated from distance and season, 2 airlines on the route, with a hold bag | about US$288–US$603 |
| 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$811–US$1,520 |
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: Basseterre
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 20 min by car · 8 places to stay
About Basseterre 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 10h 40m
About 10h 40m door to door from Chicago
Fly ORD → SXM, direct, then 1h 55m by road
Flights ORD → SXM 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 Basseterre · GetYourGuideDive gear hire in Basseterre · GetYourGuide
Dive centres nearby
Kenneth's Dive Shop 9.4 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's visibility, the current and the life 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.