Richelieu Rock
Dive site · Thailand
Advanced divers and up
Is it worth the trip?
82Good out of 100 for your dates
2 days tie for best
Tue 3 · 82 out of 100
- Sea
- 0.1 mflat
- Wind
- 6 kn
- Gusts
- 9kn
- Air
- 29°C
Wed 4 · 83 out of 100
- Sea
- 0.1 mflat
- Wind
- 3 kn
- Gusts
- 5kn
- Air
- 29°C
Thu 5 · 83 out of 100
- Sea
- 0.1 mflat
- Wind
- 2 kn
- Gusts
- 7kn
- Air
- 28°C
Fri 6 · 82 out of 100
- Sea
- 0.1 mflat
- Wind
- 3 kn
- Gusts
- 7kn
- Air
- 28°C
Sat 7 · 82 out of 100
- Sea
- 0.2 mflat
- Wind
- 4 kn
- Gusts
- 9kn
- Air
- 30°C
Sun 8 · 82 out of 100
- Sea
- 0.2 mflat
- Wind
- 4 kn
- Gusts
- 10kn
- Air
- 30°C
Mon 9 · 82 out of 100
- Sea
- 0.1 mflat
- Wind
- 1 kn
- Gusts
- 16kn
- Air
- 28°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 9 days
Full forecast- Tue 382, good
- Wed 483, good
- Thu 583, good
- Fri 682, good
- Sat 782, good
- Sun 882, good
- Mon 982, good
- Tue 1082, good
- Wed 1182, good
The site in four facts
- From a boathow you get in
- Advancedand up
- Water 29 °Crash vest or 1 to 2 mm
- Faces SEswell 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 Advanced divers and up, as a dive guide states it. Scored for Advanced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Tue 3Nov | 82, good | 0.1 mflat | 6 kn | 9kn | 29°C |
| Wed 4Nov | 83, good | 0.1 mflat | 3 kn | 5kn | 29°C |
| Thu 5Nov | 83, good | 0.1 mflat | 2 kn | 7kn | 28°C |
| Fri 6Nov | 82, good | 0.1 mflat | 3 kn | 7kn | 28°C |
| Sat 7Nov | 82, good | 0.2 mflat | 4 kn | 9kn | 30°C |
| Sun 8Nov | 82, good | 0.2 mflat | 4 kn | 10kn | 30°C |
| Mon 9Nov | 82, good | 0.1 mflat | 1 kn | 16kn | 28°C |
| Tue 10Nov | 82, good | 0.1 mflat | 5 kn | 19kn | 29°C |
| Wed 11Nov | 82, good | 0.1 mflat | 3 kn | 17kn | 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
- Tue 3 NovHigh 04:36 +0.7 mLow 11:27 −0.6 mHigh 17:55 +0.6 m
- Wed 4 NovLow 00:04 −0.4 mHigh 06:11 +0.7 mLow 12:44 −0.7 mHigh 19:07 +0.8 m
- Thu 5 NovLow 01:18 −0.6 mHigh 07:21 +0.8 mLow 13:39 −0.8 mHigh 19:57 +1.0 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.
Map
the site and its town
Richelieu Rock 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 Richelieu Rock
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 50 km on the map: book a liveaboard or a boat from further off. The sea is about 28°C in January, its coldest month (3 mm wetsuit), and 31°C in May, its warmest (rash vest or 1 to 2 mm). No town nearby. Nearest beds: Khao Lak, 87 km. Nearest airport: Ranong Airport (UNN), 77 km.
- What it is No source states what kind of site it is.
- How deep No source states how deep it goes.
- 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 50 km on the map: book a liveaboard or a boat from further off.
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 Feb, Mar, Apr, Jun and Aug (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$1,060–US$2,150 each
about US$1,060–US$2,150 each · 6 nights, 2 sharing: flights, hire car, 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 HKT, estimated from distance and season, changing at HKG, full-service airlines, with a hold bag | about US$899–US$1,870 |
| Hire car | 6 days, shared | about US$47–US$81 |
| Food | 7 days eating out | about US$114–US$208 |
| Total | about US$1,060–US$2,150 |
No town nearby, so no stay is in it. 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: nearest beds 87 km away
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
No town nearby
Nearest beds: Khao Lak, 87 km. Nearest airport: Ranong Airport (UNN), 77 km.
See places to stay near Khao Lak, 87 km away · Booking.comDistances are straight lines: a site out at sea is reached by boat.
Getting there: about 29h 30m
About 29h 30m door to door from Chicago
Fly ORD → HKT, changing at Hong Kong International Airport (HKG), then 2h 45m by road
Flights ORD → HKT 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 Richelieu Rock · GetYourGuideDive gear hire in Richelieu Rock · GetYourGuide
Dive centres nearby
No dive centre mapped within 50 km.
Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Too few records at this site itself, so these are the animals divers and surveys have recorded at other sites within 25 km in the last 15 years. A record says someone saw it there, not that you will.
Indo-Pacific sergeant Abudefduf vaigiensis
Seen in 7 records.
Magnificent rabbitfish Siganus magnificus
Seen in 6 records.
Chaetodon andamanensisButterflyfishes
Seen in 3 records.
Records: OBIS (Ocean Biodiversity Information System, IOC-UNESCO) and GBIF.org (1 November 2026, doi:10.15468/dl.jeesns), from the datasets named here, CC0 and CC BY records only. Names: WoRMS and GBIF; common names from the Catalogue of Life, the GBIF Backbone and Wikidata. Largest datasets here: iNaturalist Research-grade Observations. Credits
This week's visibility and the current 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.