Harbour Information (use the icons to find out more)


Your Comments: 8 Read or add your comments

Courtesy Flag

Flag, Red Ensign


52° 52.991N 004° 10.607W Red PHM


AC 1971 Cardigan Bay North Part, AC 1512 Approaches to Porthmadog, AC 1512 Porthmadog Harbour, SC 5609 North West Wales including the Menai Strait, Imray C51 Milford Haven to Tremadoc Bay (No plan Portmadog)

Rules & Regulations

Speed limit is 6kts from the No 8 buoy to the harbour


Sarn Badrig (St Patrick’s Causeway) to the South of the approach. Shifting sandbars in the approach marked by seasonal buoyage.

Tidal Data Times & Range

HW Porthmadog is HW Milford +0215 MHWS 5.1m MLWS 3.4m No LW data as it dries out   (links)

This site is designed for slower, roaming broadband connections, like you would get at sea, so it needs JavaScript enabled to expand the text.

General Description

Harbour Master  01766 512927, or mobile on 07879 433147
Madog Yacht Club 01766 512976, 
... read more


The Red and White Fairway Buoy is in the position marked on the 2022 UKHO chart............. ... read more

Berthing, Mooring & Anchoring

Your choice here depends on what you like; the Yacht Club owns..... ... read more

Your Ratings & Comments

Entrance to channel
Written by Merlin Taylor | 1st Sep 2023
Buoyed entrance has changed direction this year and needs to be approached from the north parallel to Black Rock Sands, liable to constant change
Written by Don Thomson 3 | 17th Aug 2021
I reviewed these notes in August 2021. A new chart and list of buoy positions has been added. The buoys here seem to go off station quite regularly so you should contact the harbour to get the latest info. Otherwise no changes.
Channel Buoys July 2018
Written by Navig8R | 14th Jul 2018
The channel buoys have moved again since the April NTM. The HM advised us to pass close to No 8 but there appeared to be plenty of water. There are some additional un-numbered buoys on the final stretch just before you enter the harbour. The pontoon at Madoc Yacht Club dries out just before the visitors berths so leave a little slack in your lines. The Yacht Club is excellent and there is a very authentic Thai Restaurant next door.
Written by Don Thomson | 20th Apr 2018
I've uploaded the Porthmadog channel details to the Navigation Gallery but there may be a typo on the Number 4 Fairway buoy. There is also doubt about the charted position of the R/W buoy and the harbour has issued a NOTAM saying use the No 2 PHM as the Entry point for the channel
Fairway 2017
Written by Don Thomson | 19th Apr 2017
Note that we have uploaded the 2017 fairway chart!!!
Find the Fairway First!
Written by Barbados Billy | 25th Sep 2016
We had a lovely time in Porthmadog summer '16. It took us two attempts to get in. The first with failing light and a boisterous sea. We failed to identify any buoys in the broken water and we didn't want to get too close as the bar was a lee shore. We came back in the morning when the sea had calmed and the channel was easily identifiable. It does lead almost onto the beach at one point but that is where the deep water is so don't fret too much. Of course next year it may have changed. We were made most welcome at the yacht club, thanks.
Make sure you do a good sea stow before leaving as the bar tossed us around a bit and we departed in mild conditions. Is it worth the effort? Most definitely. Would I go again? Yes!
Update Spring 2016
Written by dononshytalk | 13th Apr 2016
These notes were reviewed by Don in April 2016. There has been a massive change in the approach channel and we have included a chartlet of the new approach in our Nav Images gallery. It is not of the best quality and we hope eventually that Porthmadog may eventually post it somewhere on the net. Charges have gone up a bit, otherwise no other changes.
1 of 1 people found this helpful
Update Aug 2015
Written by dononshytalk | 8th Sep 2015
There have been some minor changes to the positions of the buoyage in the approach channel and a new chartlet of the channel has been uploaded to the Navigation images in the gallery
© visitMyHarbour.com | website design created by Black Culm Ltd