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Porth Nobla surfForecast / Wales – Anglesy / UK
12 Day Weather and Surf, issued 11 pm Friday 19 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porth Nobla surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Nobla sea temperature is
10.6° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Porth Nobla this week:
The surf forecast for Porth Nobla over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 9AM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.4m and 16s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Porth Nobla in the next 12 days are 2.5m 10s and forecast to arrive on Sunday (Dec 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Wednesday (Dec 24) at 12AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 21st Dec) | 4.5ft (1.4m) 9s |
| Best Surf | 9AM (Sun 21st Dec) | 4.5ft (1.4m) 9s |
| Most Powerful | 12AM (Sun 21st Dec) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Porth Nobla over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 5mm), mostly falling on Sun night. Very mild (max 10°C on Fri night, min 8°C on Sat morning). Winds decreasing (strong winds from the SE on Sat night, calm by Mon afternoon). | Days 3-6 Weather Summary Mostly dry. Very mild (max 10°C on Mon night, min 1°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the N by Tue night). | |||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Fri 26 | ||||||||||||||||
| 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 | 7 | 8 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 4 | 7 | 7 | 7 | 3 | 5 | 5 | 14 | 5 | 5 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 277 | 498 | 713 | 1155 | 322 | 161 | 59 | 31 | 15 | 8 | 5 | 12 | 2 | 2 | 2 | 0 | 0 | 0 | 4 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross- off | cross- off | off | glass | glass | glass | cross | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | off | |
High Tide / height (m) | 9:03PM 3.56 | 9:18AM 3.77 | 9:38PM 3.57 | 9:53AM 3.83 | 10:13PM 3.55 | 10:27AM 3.85 | 10:46PM 3.49 | 11:01AM 3.85 | 11:20PM 3.41 | 11:35AM 3.82 | 11:57PM 3.33 | 12:13PM 3.75 | 12:40AM 3.24 | 12:56PM 3.66 | ||||||||
Low Tide / height (m) | 3:43AM 0.62 | 4:06PM 0.49 | 4:18AM 0.58 | 4:43PM 0.45 | 4:54AM 0.57 | 5:21PM 0.45 | 5:30AM 0.60 | 6:00PM 0.50 | 6:07AM 0.68 | 6:40PM 0.57 | 6:46AM 0.80 | 7:22PM 0.65 | 7:29AM 0.94 | |||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Fri 26 | ||||||||||||||||
| Sunrise | - | 8:29 | - | - | 8:30 | - | - | 8:30 | - | - | 8:30 | - | - | 8:30 | - | - | 8:30 | - | - | 8:32 | - | |
| Sunset | - | - | 4:00 | - | - | 4:00 | - | - | 4:01 | - | - | 4:01 | - | - | 4:02 | - | - | 4:02 | - | - | 4:04 | |
 |  |  |  |  | |  | | | | | | | | | | | |  | | | ||
Rain (mm) | - | - | - | 1 | - | - | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| Temp. °C | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 6 | 3 | 2 | 3 | 4 | 5 | 5 | |
| Feels °C (?) | 3 | 0 | 0 | 1 | 6 | 6 | 5 | 9 | 9 | 9 | 5 | 3 | 1 | 2 | -1 | -4 | -4 | -2 | -2 | -2 | -2 | |
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porth Nobla 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.
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Information about the Porth Nobla Surf forecast
The above surf forecast table for Porth Nobla provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Porth Nobla can be found by selecting the local surf guide option on the grey menu. Our Porth Nobla 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 Nobla) 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 Nobla 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 Anglesy? If you are looking for accommodation near Porth Nobla, camping, hotels and holiday cottages in Anglesy, consider staying in Anglesey which is 2 km (1 miles) away. Other places in and around Anglesy where you can find information about places to rent, and car hire include Holyhead which is 12 km (7 miles) away, Bangor, Porthmadog and Llandudno.
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