Surf Forecasts:
Aberystwyth harbour trap surf forecast from 7 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 1AM (local time) - 5ft (1.6m), 7s period, WSW swell with 230 kJ wave energy.
Best Forecast Surf Conditions for Aberystwyth harbour trap this week:
The most powerful waves expected at Aberystwyth harbour trap in the next 16 days are 1.6m 7s and forecast to arrive on Tuesday (Sep 08) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Sep 09) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Tue 8th Sep) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Aberystwyth harbour trap over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for the next couple of weeks.
To be straight with you, the forecast is pretty grim for a long stretch. Aberystwyth harbour trap (reef) is a fairly exposed spot that likes a good SW groundswell, but for the first ten days, it’s just not happening. The wind is all over the place, mostly cross-onshore or onshore, and the combined swell energy is weak, barely cracking 60 on the Monday morning. It’s a frustrating start.
We’ve got a little pocket of hope later on, though. Thursday, 17th September, things finally line up. The morning brings a clean 4ft SW swell with a moderate ESE offshore breeze. The combined energy hits 106 – the only moderate energy in the whole window. The afternoon is even better, with the same offshore wind cleaning up a 4ft SW swell, energy up to 149. The period is 7 seconds, so it’s a short-period windswell, but it’ll be clean and surfable. That’s your best chance by a long way.
The water is running at 65°F on the Monday morning that we do have data for, which is much warmer than normal for this time of year. That’s a real bonus if you’re in the water.
The rest of the second week is a bit of a let-down. Friday 18th and Saturday 19th have clean offshore or cross-offshore winds, but the swell drops right back to under 3ft with weak energy. Nothing to get excited about. Sunday 20th and Monday 21st are even smaller, with less than 3ft and messy cross-shore breezes.
So, there’s a very clear standout: Thursday 17th September. Get on it if you can. The rest of the window is a write-off. The harbour trap is inconsistent at the best of times, and this forecast shows exactly why. But when it does work, even for one day, it’s worth it.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon night. Very mild (max 17°C on Mon morning, min 11°C on Wed night). Winds decreasing (fresh winds from the SW on Mon night, light winds from the SW by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Sat night. Very mild (max 17°C on Thu morning, min 10°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 14 | WSW 5 | WSW 7 | W 4 | W 5 | NW 6 | WNW 5 | WSW 8 | SW 8 | WSW 4 | WSW 5 | WSW 6 | WSW 7 | WSW 8 | WSW 8 | SW 4 | SW 6 | WSW 7 | W 7 | WSW 7 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 48 | 230 | 48 | 61 | 111 | 45 | 22 | 15 | 10 | 45 | 85 | 29 | 26 | 12 | 12 | 72 | 124 | 39 | 21 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross | cross-on | on | on | cross-off |
High Tide | 5:44PM4.07m | 6:23AM4.04m | 6:45PM4.48m | 7:16AM4.41m | 7:34PM4.88m | 7:59AM4.73m | 8:16PM5.20m | 8:38AM4.95m | 8:54PM5.39m | 9:15AM5.05m | 9:31PM5.41m | 9:50AM5.03m | 10:07PM5.29m | ||||||||
Low Tide | 12:21PM1.68m | 1:03AM1.28m | 1:26PM1.35m | 2:00AM0.91m | 2:18PM1.03m | 2:48AM0.61m | 3:02PM0.77m | 3:30AM0.43m | 3:41PM0.61m | 4:08AM0.37m | 4:17PM0.56m | 4:42AM0.45m | 4:49PM0.62m | ||||||||
 |  |  |  | |  |  | | | | |  | | |  | |  | | | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:46 | — | — |
 | — | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — |
mm | — | — | 9 | 1 | 1 | — | — | — | — | — | — | 5 | — | — | — | — | 2 | 5 | — | — | — |
Temp °C | 17 | 17 | 15 | 14 | 15 | 14 | 14 | 14 | 12 | 17 | 17 | 16 | 15 | 15 | 13 | 17 | 15 | 17 | 16 | 16 | 15 |
Feels °C | 13 | 12 | 9 | 9 | 9 | 7 | 9 | 11 | 10 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 13 | 13 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | — | — | — | — | WSW 6 | WSW 8 | NW 5 | SW 8 | — | — | — | WSW 7 | NW 4 | WSW 8 | — | — | — | W 7 | WSW 7 | WSW 7 |
| kJ | 40 | — | — | — | — | 20 | 6 | 10 | 15 | — | — | — | 29 | 9 | 12 | — | — | — | 39 | 21 | 10 |
Swell 2 Height (m) Direction Period (s) | WSW 10 | — | — | — | — | WSW 9 | — | WSW 8 | NNW 4 | — | — | — | — | WSW 8 | NNW 4 | — | — | — | — | NW 4 | — |
| kJ | 9 | — | — | — | — | 8 | — | 22 | 2 | — | — | — | — | 26 | 1 | — | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | WSW 5 | WSW 7 | W 4 | W 5 | NW 6 | WNW 5 | — | — | WSW 4 | WSW 5 | WSW 6 | NW 4 | — | — | SW 4 | SW 6 | WSW 7 | — | — | SW 3 |
| kJ | 11 | 48 | 230 | 48 | 61 | 111 | 45 | — | — | 10 | 45 | 85 | 10 | — | — | 12 | 72 | 124 | — | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 236 | 220 | 98 | 1001 | 251 | 100 | 252 | 97 | 269 | 307 | 157 | 89 | 99 | 89 | 146 | 222 | 278 | 324 | 358 | 95 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Aberystwyth harbour trap Surf forecast
The above surf forecast table for Aberystwyth harbour trap provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Aberystwyth harbour trap can be found by selecting the local surf guide option on the grey menu. Our Aberystwyth harbour trap 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 (Aberystwyth harbour trap) 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 Aberystwyth harbour trap 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 Mid Wales? If you are looking for accommodation near Aberystwyth harbour trap, camping, hotels and holiday cottages in Mid Wales, consider staying in Aberystwyth which is 5 km (3 miles) away. Other places in and around Mid Wales where you can find information about places to rent, and car hire include Trawscoed which is 15 km (9 miles) away, Aberporth, Porthmadog and Builth Wells.
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