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Porth Colmon surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 12 am Sunday 04 May 2025 BST
Best Forecast Surf Conditions for Porth Colmon this week:
The most powerful waves expected at Porth Colmon in the next 12 days are 0.9m 6s and forecast to arrive on Sunday (May 04) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Sunday (May 04) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 4th May) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Porth Colmon over the next 12 days.
Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thu 15 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 6 | 12 | 9 | 4 | 3 | 4 | 3 | 11 | 3 | 3 | 4 | 4 | 8 | 3 | 4 | 7 | 4 | 16 | 15 | 15 | 3 | 3 | 5 | 4 | 4 | 5 | 4 | 4 | 5 | 5 | 6 | 12 | 4 | 4 | 4 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 64 | 3 | 8 | 15 | 6 | 14 | 4 | 2 | 2 | 2 | 6 | 31 | 1 | 5 | 12 | 1 | 0 | 5 | 5 | 8 | 8 | 8 | 12 | 9 | 7 | 25 | 31 | 10 | 39 | 37 | 120 | 6 | 25 | 6 | 21 | 74 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross- on | cross | cross | cross | cross- off | glass | cross- on | cross | cross- on | cross- on | cross | cross | cross | cross- off | glass | on | cross | glass | on | cross- on | cross | cross- on | cross | cross- on | cross- on | cross | glass | on | cross- off | cross | cross | cross | cross | cross |
High Tide / height (m) | 1:38AM 3.34 | 2:25PM 2.81 | 2:55AM 3.12 | 3:58PM 2.68 | 4:24AM 3.07 | 5:22PM 2.77 | 5:36AM 3.18 | 6:18PM 2.96 | 6:28AM 3.33 | 7:00PM 3.18 | 7:10AM 3.48 | 7:36PM 3.38 | 7:47AM 3.60 | 8:09PM 3.56 | 8:22AM 3.70 | 8:41PM 3.69 | 8:56AM 3.74 | 9:12PM 3.77 | 9:28AM 3.73 | 9:43PM 3.79 | 10:01AM 3.67 | 10:15PM 3.76 | 10:34AM 3.57 | |||||||||||||
Low Tide / height (m) | 9:10AM 0.95 | 9:30PM 1.33 | 10:28AM 1.06 | 10:48PM 1.37 | 11:43AM 1.01 | 12:00AM 1.27 | 12:43PM 0.89 | 12:57AM 1.11 | 1:29PM 0.76 | 1:42AM 0.95 | 2:07PM 0.65 | 2:19AM 0.79 | 2:39PM 0.58 | 2:52AM 0.66 | 3:10PM 0.53 | 3:25AM 0.57 | 3:40PM 0.53 | 3:58AM 0.52 | 4:12PM 0.57 | 4:32AM 0.53 | 4:45PM 0.65 | 5:09AM 0.61 | 5:21PM 0.76 | |||||||||||||
Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thu 15 | |||||||||||||||||||||||||
| Sunrise | - | 5:41 | - | - | 5:39 | - | - | 5:37 | - | - | 5:35 | - | - | 5:33 | - | - | 5:31 | - | - | 5:30 | - | - | 5:28 | - | - | 5:26 | - | - | 5:24 | - | - | 5:22 | - | - | 5:20 | - |
| Sunset | - | - | 8:50 | - | - | 8:52 | - | - | 8:53 | - | - | 8:54 | - | - | 8:57 | - | - | 8:59 | - | - | 9:00 | - | - | 9:01 | - | - | 9:04 | - | - | 9:05 | - | - | 9:07 | - | - | 9:08 |
 |  |  | | | | | | |  | | | | | | | | | |  | | | | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 11 | 11 | 9 | 9 | 10 | 10 | 9 | 11 | 11 | 12 | 12 | 14 | 11 | 14 | 14 | 12 | 15 | 15 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 16 | 18 | 17 | 15 | 17 | 16 | 13 | 13 |
| Feels °C (?) | 5 | 9 | 5 | 2 | 2 | 3 | 6 | 7 | 6 | 7 | 7 | 6 | 9 | 7 | 8 | 9 | 10 | 10 | 10 | 12 | 11 | 12 | 13 | 12 | 12 | 14 | 13 | 13 | 14 | 15 | 14 | 10 | 11 | 11 | 6 | 8 |
Short Range Forecast: Mostly dry. Very mild (max 11°C on Sun morning, min 7°C on Sun night). Winds decreasing (fresh winds from the NE on Sun afternoon, calm by Tue morning). | Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Fri afternoon, min 9°C on Thu morning). Winds decreasing (fresh winds from the NNE on Thu afternoon, calm by Fri morning). | Days 6-9 Weather Summary Mostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | Long Range Forecast: Mostly dry. Very mild (max 18°C on Mon night, min 11°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the NE by Thu morning). | |||||||||||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porth Colmon surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Porth Colmon Surf forecast
The above surf forecast table for Porth Colmon provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Porth Colmon can be found by selecting the local surf guide option on the grey menu. Our Porth Colmon surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Porth Colmon) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Porth Colmon may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Lleyn Peninsula? If you are looking for accommodation near Porth Colmon, camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 37 km (23 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Anglesey which is 42 km (26 miles) away, Holyhead, Bangor and Aberystwyth.
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