Conch dive site
Dive site · Sri Lanka
Advanced divers and up
Is it worth the trip?
68Good out of 100 for your dates
Best on Mon 9: Sea 0.9 m, Visibility under 5 m, Water 29 °C
Tue 3 · 67 out of 100
- Sea
- 1.1 m
- Wind
- 2 kn
- Gusts
- 9kn
- Air
- 29°C
Wed 4 · 64 out of 100
- Sea
- 1.1 m
- Wind
- 4 kn
- Gusts
- 10kn
- Air
- 29°C
Thu 5 · 67 out of 100
- Sea
- 1.0 m
- Wind
- 5 kn
- Gusts
- 14kn
- Air
- 29°C
Fri 6 · 68 out of 100
- Sea
- 1.0 m
- Wind
- 3 kn
- Gusts
- 9kn
- Air
- 29°C
Sat 7 · 67 out of 100
- Sea
- 1.0 m
- Wind
- 2 kn
- Gusts
- 9kn
- Air
- 29°C
Sun 8 · 68 out of 100
- Sea
- 1.0 m
- Wind
- 2 kn
- Gusts
- 10kn
- Air
- 29°C
Mon 9 · 69 out of 100
- Sea
- 0.9 m
- Wind
- 2 kn
- Gusts
- 9kn
- Air
- 30°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 9 days
Full forecast- Mon 272, good
- Tue 367, good
- Wed 464, good
- Thu 567, good
- Fri 668, good
- Sat 767, good
- Sun 868, good
- Mon 969, good
- Tue 1070, good
The site in six facts
- Down to 20 mits deepest
- From a boathow you get in
- Advancedand up
- Water 29 °Crash vest or 1 to 2 mm
- Faces SWswell from there reaches it
- Best Dec–Mar7 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 | 72, good | 0.9 m | 4 kn | 12kn | 30°C |
| Tue 3Nov | 67, good | 1.1 m | 2 kn | 9kn | 29°C |
| Wed 4Nov | 64, good | 1.1 m | 4 kn | 10kn | 29°C |
| Thu 5Nov | 67, good | 1.0 m | 5 kn | 14kn | 29°C |
| Fri 6Nov | 68, good | 1.0 m | 3 kn | 9kn | 29°C |
| Sat 7Nov | 67, good | 1.0 m | 2 kn | 9kn | 29°C |
| Sun 8Nov | 68, good | 1.0 m | 2 kn | 10kn | 29°C |
| Mon 9Nov | 69, good | 0.9 m | 2 kn | 9kn | 30°C |
| Tue 10Nov | 70, good | 0.8 m | 2 kn | 16kn | 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 NovHigh 05:59 +0.1 mLow 12:58 −0.1 mHigh 20:14 −0.0 m
- Tue 3 NovLow 01:07 −0.1 mHigh 08:35 +0.0 mLow 15:35 −0.1 mHigh 22:57 +0.1 m
- Wed 4 NovLow 05:17 −0.1 mHigh 10:48 +0.1 mLow 17:02 −0.2 mHigh 23:48 +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.
Best time to go
best Dec–Mar
Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).
- Jan7of 7: a trip from Sat 2 Jan
- Feb7of 7: a trip from Sat 6 Feb
- Mar7of 7: a trip from Sat 6 Mar
- Apr6of 7: a trip from Sat 3 Apr
- May3of 7: a trip from Sat 1 May
- Jun0of 7: a trip from Sat 5 Jun
- Jul0of 7: a trip from Sat 3 Jul
- Aug1of 7: a trip from Sat 7 Aug
- Sep1of 7: a trip from Sat 4 Sept
- Oct4of 7: a trip from Sat 2 Oct
- Nov6of 7: a trip from Tue 3 Nov
- Dec7of 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
Conch dive site 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.
About
the place in full, sources, credits
About Conch dive site
A wreck 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 SW: swell from the SW reaches it, and wind from the NE blows out to sea. 3 dive centres or shops within 10 km, the nearest 8.4 km away. The sea is about 28°C in January, its coldest month (3 mm wetsuit), and 30°C in April, its warmest (rash vest or 1 to 2 mm). For Advanced divers the best months are usually January, February, March and December, with about 7 good days in 7; in June and July, about 0. From the weather of past years. The town to stay in is Ambalangoda. Within 5 km we also list 1 wind sports spot.
- What it is Wreck.
- 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 3 dive centres or shops within 10 km, the nearest 8.4 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 9 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 Dec (about 15 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$1,110–US$2,240 each
about US$1,110–US$2,240 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 CMB, estimated from distance and season, changing at IST, full-service airlines, with a hold bag | about US$898–US$1,860 |
| Hire car | 6 days, shared | about US$40–US$74 |
| Stay | 6 nights, a mid-range double, shared | about US$80–US$141 |
| Food | 7 days eating out | about US$94–US$167 |
| Total | about US$1,110–US$2,240 |
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: Ambalangoda
about 10 min by car · 54 places to stay
about US$33/nightcountry average
About Ambalangoda its beds, food and every spot near it
About US$33 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 31h
About 31h door to door from Chicago
Fly ORD → CMB, changing at İstanbul Airport (IST), then 3h 40m by road
Flights ORD → CMB on your dates · Skyscanner
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Ambalangoda · GetYourGuideDive gear hire in Ambalangoda · GetYourGuide
Dive centres nearby
Poseidon Diving Center 8.4 km
Blue Water Dive Center 9.2 km
Scuba Safaris Hikkaduwa 11 km
Diving with Mewan 11 km
Dodanduwa Diving and Water Sports Club 13 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.