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Benllech Bay surfForecast / Wales – Anglesy / UK
12 Day Weather and Surf, issued 6 am Sunday 14 Sep 2025 BST
Best Forecast Surf Conditions for Benllech Bay this week:
The most powerful waves expected at Benllech Bay in the next 12 days are 0.9m 4s and forecast to arrive on Sunday (Sep 14) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Monday (Sep 15) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sun 14th Sep) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for Benllech Bay over the next 12 days.
Short Range Forecast Heavy rain (total 26mm), heaviest during Tue night. Very mild (max 16°C on Sun afternoon, min 12°C on Sun morning). Winds decreasing (near gales from the SW on Mon morning, light winds from the S by Tue night). | Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 18°C on Wed morning, min 13°C on Thu night). Winds decreasing (strong winds from the SW on Wed afternoon, light winds from the SE by Fri night). | ||||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 5 | 4 | 6 | 8 | 8 | 7 | 6 | 6 | 5 | 6 | 6 | 5 | 8 | 6 | 5 | 5 | 4 | 5 | 4 | 4 | 3 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1 | 32 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 2 | 8 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | off | off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | cross- off | cross- off | cross | cross | off | cross- off |
High Tide / height (m) | 4:16PM 5.76 | 4:57AM 5.52 | 5:33PM 5.36 | 6:29AM 5.17 | 7:07PM 5.29 | 8:03AM 5.23 | 8:30PM 5.59 | 9:13AM 5.55 | 9:30PM 6.03 | 10:03AM 5.93 | 10:16PM 6.46 | 10:43AM 6.27 | 10:54PM 6.79 | ||||||||
Low Tide / height (m) | 10:18AM 1.45 | 10:51PM 1.55 | 11:30AM 1.95 | 12:16AM 1.86 | 12:59PM 2.16 | 1:49AM 1.81 | 2:24PM 2.00 | 3:05AM 1.46 | 3:28PM 1.63 | 4:01AM 1.03 | 4:17PM 1.23 | 4:45AM 0.66 | 4:57PM 0.90 | ||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||
| Sunrise | 6:47 | - | - | 6:48 | - | - | 6:50 | - | - | 6:52 | - | - | 6:54 | - | - | 6:56 | - | - | 6:58 | - | - |
| Sunset | - | 7:36 | - | - | 7:34 | - | - | 7:30 | - | - | 7:29 | - | - | 7:25 | - | - | 7:23 | - | - | 7:21 | - |
 |  |  | | |  | |  |  | | | |  | | | |  | | | | | |
Rain (mm) | 2 | 5 | 2 | 3 | 3 | - | 1 | - | 10 | 2 | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 13 | 16 | 15 | 13 | 14 | 13 | 14 | 15 | 14 | 18 | 17 | 15 | 16 | 16 | 15 | 15 | 15 | 17 | 21 | 20 | 18 |
| Feels °C (?) | 10 | 9 | 8 | 2 | 5 | 4 | 7 | 9 | 11 | 11 | 9 | 8 | 10 | 10 | 10 | 13 | 14 | 16 | 20 | 19 | 16 |
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Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - Anglesy
Onshore wind has changed to cross-on at Rhosneigr (moderate winds from the S at Valley RAF Airport 2 km from Rhosneigr). 0.7m 7s swell from the SW with a 0.3m 4s local chop from the NW and a 0.3m 4s local chop from the SW. 3 swells combining to make bigger set waves.
Actual: 33 min ago
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Information about the Benllech Bay Surf forecast
The above surf forecast table for Benllech Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Benllech Bay can be found by selecting the local surf guide option on the grey menu. Our Benllech Bay 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 (Benllech Bay) 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 Benllech Bay 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 Benllech Bay, camping, hotels and holiday cottages in Anglesy, consider staying in Bangor which is 9 km (6 miles) away. Other places in and around Anglesy where you can find information about places to rent, and car hire include Anglesey which is 22 km (14 miles) away, Llandudno, Holyhead and Colwyn Bay.
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