Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 1 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 10ft (3.0m), 8s period, SW swell with 1,237 kJ wave energy.
Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 3.0m 8s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 02) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Tue 8th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for Whistling Sands (Porth Oer).
To be straight with you, this is a pretty lean run. We’re looking at a full 16 days, and honestly, there isn’t a single session I’d paddle out for. The break itself is inconsistent and sheltered, and the forecast just doesn’t deliver the goods.
We start off with a bit of small, weak swell on Tuesday 1st September, but with a cross-shore wind at 19 mph and lumpy chop, it’s a write-off. That pattern sticks around for days. On Wednesday 2nd, the swell bumps up to 6 ft in the afternoon, but the energy is still moderate (255) and the period is short at 6 seconds, so it’s just messy and weak. The wind stays cross-off, which is clean, but the wave quality is poor.
Thursday 3rd brings a little more energy (154) and 5 ft swell, but again, it’s a short period and cross-shore wind spoils it. Friday 4th is a mess with cross-onshore winds. Saturday 5th drops right off to tiny 1 ft junk. Sunday 6th is a total flat spell with 0.3 ft and a very long 13-second period, but there’s no power behind it.
The only moment that looks interesting is Tuesday 8th September. The swell jumps to 8 ft from the WSW with a massive energy reading of 719. That’s a lot of juice, but the wind is a near gale from the SW at 31 mph, creating a cross-shore mess. For a sheltered, inconsistent spot like this, that’s going to be a washing machine. It’s too big and wild for beginners, and the wind makes it unrideable for everyone else. On a beach setup like this, that’s more of a kite-surfing day than a paddle-surfing day.
After that, the rest of the window is a long, slow fade into tiny, onshore, or glassy flat spells. The water temperature sits around 62°F, which is about 2°F warmer than the long-term average for this time of year, so it’s a touch warm but nothing crazy.
So, there’s no standout here. Not a single session I’d call good. Sometimes you get a blank run like this, and it’s just how it goes. The forecasts can change, but for now, leave the boards at home.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Wed morning. Very mild (max 19°C on Wed night, min 15°C on Tue morning). Winds increasing (moderate winds from the SW on Wed night, near gales from the SW by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sun night, min 13°C on Fri night). Winds increasing (light winds from the W on Sat morning, fresh winds from the SSW by Sun night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | SW 4 | SW 5 | SW 5 | SSW 6 | SW 6 | SW 7 | SW 7 | SW 6 | SW 7 | SW 7 | SW 7 | NW 5 | SW 6 | SW 6 | SW 6 | SW 13 | SW 13 | SW 12 | SW 6 | SW 7 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 58 | 60 | 0 | 255 | 368 | 109 | 154 | 290 | 158 | 93 | 35 | 13 | 9 | 7 | 7 | 6 | 6 | 40 | 63 | 411 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross-off | cross | cross | cross-off | cross | cross-on | cross | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross |
High Tide | 11:28AM3.91m | 11:47PM4.09m | 12:08PM3.76m | 00:30AM3.83m | 12:53PM3.53m | 1:20AM3.49m | 1:48PM3.26m | 2:25AM3.15m | 3:02PM3.03m | 3:52AM2.93m | 4:36PM3.02m | 5:28AM2.98m | 6:01PM3.28m | ||||||||
Low Tide | 6:13PM0.48m | 6:41AM0.53m | 6:51PM0.67m | 7:22AM0.79m | 7:39PM0.91m | 8:16AM1.08m | 8:50PM1.14m | 9:38AM1.30m | 10:31PM1.24m | 11:19AM1.31m | 00:09AM1.06m | 12:42PM1.09m | 1:21AM0.71m | ||||||||
 | |  |  |  |  | | |  |  | |  | | | | | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — |
mm | — | — | 5 | 10 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 17 | 17 | 19 | 17 | 17 | 18 | 15 | 17 | 16 | 14 | 14 | 14 | 16 | 17 | 18 | 17 | 18 | 16 |
Feels °C | 11 | 12 | 13 | 12 | 13 | 16 | 14 | 12 | 10 | 10 | 12 | 10 | 12 | 11 | 11 | 11 | 12 | 14 | 13 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | N 4 | W 18 | W 16 | — | — | — | SW 14 | — | — | SW 7 | NW 4 | SW 7 | NNW 5 | SW 6 | SW 6 | SW 13 | SW 13 | SW 12 | SW 6 | WSW 12 | — |
| kJ | 1 | 6 | 5 | — | — | — | 8 | — | — | 158 | 6 | 27 | 15 | 9 | 5 | 7 | 6 | 6 | 40 | 57 | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 6 | NNW 4 | SW 13 | W 13 | — | — | WSW 13 | NW 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | 8 | 8 | 8 | 13 | 4 | 7 | 3 | — | — | 17 | 4 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 13 | — | W 9 | — | — | WSW 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | — | 2 | — | — | 7 | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | SW 5 | SSW 6 | SW 6 | SW 7 | SW 7 | SW 6 | SW 7 | — | SW 7 | NW 5 | — | — | S 2 | SSW 4 | SSW 6 | SW 6 | NW 5 | SW 7 | SW 6 |
| kJ | 31 | 58 | 60 | 181 | 255 | 368 | 109 | 154 | 290 | — | 93 | 35 | — | — | 1 | 36 | 131 | 112 | 22 | 63 | 411 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 256 | 270 | 233 | 295 | 288 | 270 | 256 | 292 | 292 | 130 | 15 | 132 | 129 | 200 | 113 | 141 | 331 | 258 | 250 | 256 | 278 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Whistling Sands (Porth Oer) Surf forecast
The above surf forecast table for Whistling Sands (Porth Oer) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Whistling Sands (Porth Oer) can be found by selecting the local surf guide option on the grey menu. Our Whistling Sands (Porth Oer) 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 (Whistling Sands (Porth Oer)) 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 Whistling Sands (Porth Oer) 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 Whistling Sands (Porth Oer), camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 41 km (25 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 48 km (30 miles) away, Holyhead, Bangor and Aberystwyth.
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