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Portmarnock Sub-Aqua Club
Dive site · Ireland
Is it worth the trip?
64Good out of 100 for your dates
2 days tie for best
Tue 3 · 63 out of 100
- Sea
- 0.2 mflat
- Wind
- 7 kn
- Gusts
- 12kn
- Air
- 11°C
Wed 4 · 61 out of 100
- Sea
- 0.5 m
- Wind
- 12 kn
- Gusts
- 23kn
- Air
- 12°C
Thu 5 · 60 out of 100
- Sea
- 0.6 m
- Wind
- 12 kn
- Gusts
- 23kn
- Air
- 11°C
Fri 6 · 64 out of 100
- Sea
- 0.2 mflat
- Wind
- 3 kn
- Gusts
- 12kn
- Air
- 10°C
Sat 7 · 66 out of 100
- Sea
- 0.0 mflat
- Wind
- 2 kn
- Gusts
- 9kn
- Air
- 10°C
Sun 8 · 66 out of 100
- Sea
- 0.0 mflat
- Wind
- 3 kn
- Gusts
- 10kn
- Air
- 9°C
Mon 9 · 61 out of 100
- Sea
- 0.4 m
- Wind
- 12 kn
- Gusts
- 23kn
- Air
- 10°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 9 days
Full forecast- Tue 363, good
- Wed 461, good
- Thu 560, good
- Fri 664, good
- Sat 766, good
- Sun 866, good
- Mon 961, good
- Tue 1061, good
- Wed 1164, good
The site in three facts
- Open Waterand up
- Water 13 °C7 mm semi-dry or a drysuit
- Faces Eswell 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.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Tue 3Nov | 63, good | 0.2 mflat | 7 kn | 12kn | 11°C |
| Wed 4Nov | 61, good | 0.5 m | 12 kn | 23kn | 12°C |
| Thu 5Nov | 60, good | 0.6 m | 12 kn | 23kn | 11°C |
| Fri 6Nov | 64, good | 0.2 mflat | 3 kn | 12kn | 10°C |
| Sat 7Nov | 66, good | 0.0 mflat | 2 kn | 9kn | 10°C |
| Sun 8Nov | 66, good | 0.0 mflat | 3 kn | 10kn | 9°C |
| Mon 9Nov | 61, good | 0.4 m | 12 kn | 23kn | 10°C |
| Tue 10Nov | 61, good | 0.5 m | 10 kn | 26kn | 11°C |
| Wed 11Nov | 64, good | 0.3 m | 4 kn | 11kn | 11°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 06:18 +1.1 mLow 11:46 −1.0 mHigh 18:30 +1.4 m
- Wed 4 NovLow 00:35 −1.5 mHigh 07:26 +1.2 mLow 12:57 −1.1 mHigh 19:36 +1.5 m
- Thu 5 NovLow 01:40 −1.6 mHigh 08:23 +1.4 mLow 13:58 −1.3 mHigh 20:33 +1.6 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
Portmarnock Sub-Aqua Club 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 Portmarnock Sub-Aqua Club
It suits Open Water divers and up, as a dive guide states it. The coast faces E: swell from the E reaches it, and wind from the W blows out to sea. 1 dive centre or shop within 10 km, the nearest 6.6 km away. The sea is about 9°C in February, its coldest month (drysuit), and 15°C in July, its warmest (7 mm semi-dry or a drysuit). The town to stay in is Portmarnock. Within 5 km we also list 1 wind sports spot and 1 dive site.
- What it is No source states what kind of site it is.
- How deep No source states how deep it goes.
- Who it suits Suits Open Water divers and up, as a dive guide states it.
- Dive centres 1 dive centre or shop within 10 km, the nearest 6.6 km away.
Water about 13°C: 7 mm semi-dry or a drysuit. Typical sea temperature for the time of year, not a forecast.
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$1,050–US$1,990 each
about US$1,050–US$1,990 each · 6 nights, 2 sharing: flights, taxi, 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 DUB, estimated from distance and season, 3 airlines on the route, with a hold bag | about US$423–US$879 |
| Taxi | airport and back, shared | about US$20–US$34 |
| Stay | 6 nights, a mid-range double, shared | about US$289–US$483 |
| Food | 7 days eating out | about US$322–US$597 |
| Total | about US$1,050–US$1,990 |
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: Portmarnock
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 5 min by car · 5 places to stay
about US$107/nightcountry average
About Portmarnock 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 12h 20m
About 12h 20m door to door from Chicago
Fly ORD → DUB, direct, then 30 min by road
Flights ORD → DUB 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 Portmarnock · GetYourGuideDive gear hire in Portmarnock · GetYourGuide
Dive centres nearby
Feel Good Scuba 6.6 km
UCD Sub Aqua Club 15 km
Irish Underwater Council 16 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.
Shore crab Carcinus maenas
Seen in 4 records.
Sea-potato Echinocardium cordatum
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: Explore Your Shore; Great Eggcase Hunt - citizen science observations of chondrichthyian eggcases; iNaturalist Research-grade Observations. Credits
What is under the water this week (visibility, 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.