Dartmouth Mewstone
Dive site · UK
Advanced divers and up
Is it worth the trip?
54Fair out of 100 for your dates
Best on Sat 7: Sea: flat, Visibility under 5 m, Water 14 °C
Mon 2 · 53 out of 100
- Sea
- 0.5 m
- Wind
- 18 kn
- Gusts
- 24kn
- Air
- 12°C
Tue 3 · 50 out of 100
- Sea
- 0.7 m
- Wind
- 19 kn
- Gusts
- 26kn
- Air
- 13°C
Wed 4 · 2 out of 100
- Sea
- 1.0 m
- Wind
- 24 kn
- Gusts
- 33knboats in
- Air
- 11°C
Thu 5 · 25 out of 100
- Sea
- 0.8 m
- Wind
- 20 kn
- Gusts
- 28knboats in
- Air
- 11°C
Fri 6 · 64 out of 100
- Sea
- 0.2 mflat
- Wind
- 5 kn
- Gusts
- 8kn
- Air
- 13°C
Sat 7 · 66 out of 100
- Sea
- 0.1 mflat
- Wind
- 4 kn
- Gusts
- 9kn
- Air
- 11°C
Sun 8 · 65 out of 100
- Sea
- 0.1 mflat
- Wind
- 6 kn
- Gusts
- 10kn
- Air
- 12°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Mon 253, fair
- Tue 350, fair
- Wed 42, poor
- Thu 525, poor
- Fri 664, good
- Sat 766, good
- Sun 865, good
- Mon 949, fair
- Tue 1051, fair
- Wed 1154, fair
The site in five facts
- Down to 35 mits deepest
- From a boathow you get in
- Advancedand up
- Water 14 °C7 mm semi-dry or a drysuit
- 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 |
|---|---|---|---|---|---|
| Mon 2Nov | 53, fair | 0.5 m | 18 kn | 24kn | 12°C |
| Tue 3Nov | 50, fair | 0.7 m | 19 kn | 26kn | 13°C |
| Wed 4Nov | 2, poor | 1.0 m | 24 kn | 33knboats in | 11°C |
| Thu 5Nov | 25, poor | 0.8 m | 20 kn | 28knboats in | 11°C |
| Fri 6Nov | 64, good | 0.2 mflat | 5 kn | 8kn | 13°C |
| Sat 7Nov | 66, good | 0.1 mflat | 4 kn | 9kn | 11°C |
| Sun 8Nov | 65, good | 0.1 mflat | 6 kn | 10kn | 12°C |
| Mon 9Nov | 49, fair | 0.6 m | 21 kn | 29kn | 13°C |
| Tue 10Nov | 51, fair | 0.7 m | 19 kn | 27kn | 13°C |
| Wed 11Nov | 54, fair | 0.7 m | 15 kn | 24kn | 14°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 04:43 −1.1 mHigh 11:33 +1.2 mLow 17:32 −1.2 m
- Tue 3 NovHigh 00:37 +0.8 mLow 05:56 −0.9 mHigh 13:06 +1.1 mLow 18:54 −1.1 m
- Wed 4 NovHigh 02:04 +0.9 mLow 07:21 −0.9 mHigh 14:26 +1.2 mLow 20:17 −1.2 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).
- Jan7of 7: a trip from Sat 2 Jan
- Feb6of 7: a trip from Sat 6 Feb
- Mar7of 7: a trip from Sat 6 Mar
- Apr7of 7: a trip from Sat 3 Apr
- May7of 7: a trip from Sat 1 May
- Jun7of 7: a trip from Sat 5 Jun
- Jul7of 7: a trip from Sat 3 Jul
- Aug7of 7: a trip from Sat 7 Aug
- Sep7of 7: a trip from Sat 4 Sept
- Oct7of 7: a trip from Sat 2 Oct
- Nov7of 7: a trip from Tue 3 Nov
- 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, its town, photos
Dartmouth Mewstone 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.
Photos of Dartmouth Mewstone
About
the place in full, sources, credits
About Dartmouth Mewstone
It goes down to 35 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 24 km away. The sea is about 9°C in March, its coldest month (drysuit), and 17°C in July, its warmest (7 mm wetsuit and hood). The town to stay in is Dartmouth. Within 5 km we also list 1 wind sports spot and 3 dive sites.
- What it is No source states what kind of site it is.
- How deep Down to 35 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 24 km away.
Water about 14°C: 7 mm semi-dry or a drysuit. Typical sea temperature for the time of year, not a forecast.
Visibility about 5 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, Jun, Jul, Aug, Sep, Oct and Nov (about 7 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$1,170–US$2,200 each
about US$1,170–US$2,200 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 EXT, estimated from distance and season, changing at DUB, full-service airlines, with a hold bag | about US$436–US$913 |
| Hire car | 6 days, shared | about US$141–US$235 |
| Stay | 6 nights, a mid-range double, shared | about US$282–US$470 |
| Food | 7 days eating out | about US$315–US$584 |
| Total | about US$1,170–US$2,200 |
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: Dartmouth
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 10 min by car · 72 places to stay
about US$107/nightcountry average
About Dartmouth its beds, food and every spot near it
About US$107 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 16h 40m
About 16h 40m door to door from Chicago
Fly ORD → EXT, changing at Dublin Airport (DUB), then 1h 05m by road
Flights ORD → EXT 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 Dartmouth · GetYourGuideDive gear hire in Dartmouth · GetYourGuide
Dive centres nearby
Teign Diving Centre 24 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
Animals divers and surveys have recorded within 2 km of this site in the last 15 years. A record says someone saw it here, not that you will.
Nursehound Scyliorhinus stellarisShark
Seen in 21 records, mostly Apr to Sep.
Small-spotted catshark Scyliorhinus caniculaShark
Seen in 15 records, mostly Apr to Sep.
Thorny doris Acanthodoris pilosaNudibranch
Seen in 8 records.
Doto fragilisNudibranch
Seen in 7 records.
Edmundsella pedataNudibranch
Seen in 7 records.
Polycera faeroensisNudibranch
Seen in 7 records.
Antiopella cristataNudibranch
Seen in 6 records.
Coryphella browniNudibranch
Seen in 6 records.
Candiella odhneriNudibranch
Seen in 3 records.
Fried egg sea slug Diaphorodoris luteocinctaNudibranch
Seen in 3 records.
Orange-clubbed sea slug Limacia clavigeraNudibranch
Seen in 3 records.
Fourline nudibranch Polycera quadrilineataNudibranch
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: Seasearch Marine Surveys in England; Marine Recorder Snapshot extract of surveys entered by SeaSearch; Marine Recorder Snapshot extract of surveys entered by Natural England; Protected and Invasive Species Records Collected Through Environment Agency Survey 1995 - 2021; 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.