Staying Home Sucks, home
Lighthouse on the breakwater, Portland Harbour
Countesse of Erne. Photo: Nicholas Mutton, CC BY-SA 2.0, Wikimedia Commons

Countesse of Erne

Dive site · UK

Open Water divers and up

Scored for Advanced divers

Is it worth the trip?

60Good out of 100 for your dates

Home sucks

Best on Sun 8: Sea: flat, Visibility about 5 m, Water 14 °C

Each day of your trip, out of 100

Tue 3 · 55 out of 100

Sea
0.3 m
Wind
17 kn
Gusts
24kn
Air
13°C

Wed 4 · 50 out of 100

Sea
0.7 m
Wind
20 kn
Gusts
28knboats in
Air
11°C

Thu 5 · 55 out of 100

Sea
0.5 m
Wind
16 kn
Gusts
24kn
Air
10°C

Fri 6 · 63 out of 100

Sea
0.3 m
Wind
10 kn
Gusts
14kn
Air
11°C

Sat 7 · 64 out of 100

Sea
0.1 mflat
Wind
5 kn
Gusts
10kn
Air
11°C

Sun 8 · 67 out of 100

Sea
0.0 mflat
Wind
0 kn
Gusts
10kn
Air
9°C

Mon 9 · 55 out of 100

Sea
0.2 mflat
Wind
16 kn
Gusts
24knboats in
Air
13°C

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

Forecast: next 9 days

Full forecast
  1. Mon 258, fair
  2. Tue 355, fair
  3. Wed 450, fair
  4. Thu 555, fair
  5. Fri 663, good
  6. Sat 764, good
  7. Sun 867, good
  8. Mon 955, fair
  9. Tue 1064, good

The site in four facts

  • Down to 15 mits deepest
  • Open Waterand up
  • Water 14 °C7 mm semi-dry or a drysuit
  • Faces NWswell 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 Countesse of Erne
DayScoreSeaWindGustsAir
Mon 2Nov58, fair0.3 m14 kn21kn12°C
Tue 3Nov55, fair0.3 m17 kn24kn13°C
Wed 4Nov50, fair0.7 m20 kn28knboats in11°C
Thu 5Nov55, fair0.5 m16 kn24kn10°C
Fri 6Nov63, good0.3 m10 kn14kn11°C
Sat 7Nov64, good0.1 mflat5 kn10kn11°C
Sun 8Nov67, good0.0 mflat0 kn10kn9°C
Mon 9Nov55, fair0.2 mflat16 kn24knboats in13°C
Tue 10Nov64, good0.2 mflat8 kn13kn15°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 04:36 −0.5 mHigh 12:06 +0.8 mLow 18:01 −0.6 m
  • Tue 3 NovHigh 01:02 +0.5 mLow 05:58 −0.3 mHigh 13:24 +0.7 mLow 21:01 −0.6 m
  • Wed 4 NovHigh 02:22 +0.5 mLow 09:29 −0.3 mHigh 14:39 +0.8 mLow 22:11 −0.8 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. Mar7of 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, its town, photos

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.

Photos of Countesse of Erne

East Ship Channel, Portland Harbour
Photo: Peter Barr, CC BY-SA 2.0, Wikimedia Commons
20220523.Portland Harbour & Weymouth Bay.-017
Photo: Bybbisch94, Christian Gebhardt, CC BY-SA 4.0, Wikimedia Commons
Disused buildings on breakwater
Photo: Nick Mutton, CC BY-SA 2.0, Wikimedia Commons

More diving near here

1 place

About

the place in full, sources, credits

About Countesse of Erne

A wreck dive. It goes down to 15 m. It suits Open Water divers and up, as a dive guide states it. The coast faces NW: swell from the NW reaches it, and wind from the SE blows out to sea. No dive centre within 10 km, the nearest 33 km away. The sea is about 9°C in February, its coldest month (drysuit), and 18°C in August, its warmest (7 mm wetsuit and hood). The town to stay in is Weymouth. Within 5 km we also list 1 surf spot, 1 wind sports spot and 1 dive site.

  • What it is Wreck.
  • How deep Down to 15 m.
  • Who it suits Suits Open Water divers and up, as a dive guide states it.
  • Dive centres No dive centre within 10 km, the nearest 33 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 Feb, Mar, Apr, 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$1,190–US$2,210 each

about US$1,190–US$2,210 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 LHR, estimated from distance and season, 3 airlines on the route, with a hold bagabout US$449–US$925
Hire car6 days, sharedabout US$141–US$234
Stay6 nights, a mid-range double, sharedabout US$281–US$469
Food7 days eating outabout US$315–US$583
Totalabout US$1,190–US$2,210

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: Weymouth

Closest

Weymouth

6 min by car · 184 places to stay

about US$107/nightcountry average

See 184 places to stay in Weymouth · Booking.com

About Weymouth 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 30 October 2026.

Getting there: about 15h 40m

About 15h 40m door to door from Chicago

Fly ORD → LHR, direct, then 3h 15m by road

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

In the water

Dive centres nearby

No dive centre mapped within 25 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.