Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 21 Aug 2026:
- Best quality surf: Thursday 27 Aug, 10AM (local time) - 3ft (0.9m), 7s period, SSW swell with offshore winds.
- Most powerful swell: Thursday 27 Aug, 1PM (local time) - 3ft (0.9m), 8s period, SSW swell with 103 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 10AM (local time) - 3ft (0.9m), 7s period with SSW swell.
Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:
The surf forecast for Whistling Sands (Porth Oer) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 10AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 0.9m 8s and forecast to arrive on Thursday (Aug 27) at 1PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Aug 26) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 27th Aug) | 3ft (0.9m) 7s |
| Best Surf | 10AM (Thu 27th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 1PM (Thu 27th Aug) | 3ft (0.9m) 8s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
G'day, I'm Rusty, and here's the outlook. It's a rough one for the next couple of weeks. The first few days are a total write-off, with tiny, weak swell and onshore winds making for a grim picture. The whole first week is a bust, with no real surf. We're looking at a gap of several days before anything worthwhile turns up.
The best chance of a wave comes around Thursday, August 27th. Whistling Sands (Porth Oer) will see a 3 ft swell from the SSW, with a short period of 7 seconds. The combined energy is moderate (110). The real kicker here is the light offshore wind from the SE in the morning, which will keep the waves clean. It's a rare bright spot in a bleak forecast, but given the shallow, sheltered nature of the spot, it might be worth a look for a beginner-friendly session. The water temperature anomaly is not mentioned, so it's about average for the time of year.
The following weekend, particularly Saturday, August 29th, sees a jump in size with a 7 ft to 8 ft groundswell from the WSW, but it's paired with a strong 19 mph onshore wind. The combined energy will be strong (350 to 485), but the conditions will be lumpy and messy. This is one for the experts only, and honestly, the setup looks more interesting for kite surfing than paddle surfing.
After that, there's nothing else of note. The forecast is a bleak one, with very few consistent breaks on offer. We'll have to wait and see if the forecasts change. Keep your eyes peeled.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri morning. Very mild (max 16°C on Fri afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu night, light winds from the N by Sun morning). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Wed morning. Warm (max 24°C on Tue afternoon, min 15°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | NNW 5 | NNW 5 | N 4 | NNW 5 | NNW 5 | N 5 | SW 14 | SW 14 | SW 11 | SW 10 | WSW 9 | SW 13 | SW 13 | SW 13 | SSW 8 | SW 12 | SW 12 | SW 12 | SSW 7 | SSW 8 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 57 | 32 | 11 | 20 | 18 | 10 | 8 | 7 | 19 | 14 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 88 | 73 | 37 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off |
High Tide | 3:22PM2.70m | 4:14AM2.59m | 5:01PM2.65m | 5:49AM2.62m | 6:22PM2.82m | 6:54AM2.80m | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | 8:14AM3.26m | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | ||||||||
Low Tide | 9:23AM1.49m | 10:11PM1.52m | 10:58AM1.60m | 00:02AM1.51m | 12:37PM1.49m | 1:19AM1.30m | 1:36PM1.24m | 2:08AM1.03m | 2:17PM0.97m | 2:46AM0.75m | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | |||||||
 | |  |  | | | | | |  |  |  | |  |  |  |  |  | | | | |
 | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 14 | 2 | 3 | — | 1 | — |
Temp °C | 14 | 16 | 15 | 13 | 14 | 14 | 14 | 16 | 16 | 19 | 22 | 22 | 20 | 24 | 19 | 17 | 18 | 17 | 18 | 18 | 17 |
Feels °C | 9 | 12 | 10 | 9 | 10 | 11 | 13 | 13 | 13 | 17 | 17 | 16 | 15 | 19 | 17 | 12 | 14 | 11 | 15 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 6 | SW 13 | SW 15 | SW 15 | SW 15 | N 4 | SW 14 | SW 11 | SW 10 | WSW 9 | SW 9 | SW 13 | SW 8 | SSW 6 | SW 12 | SW 12 | SW 12 | SSW 7 | SSW 8 | SSW 7 |
| kJ | 4 | 3 | 7 | 8 | 8 | 8 | 3 | 7 | 19 | 14 | 8 | 3 | 7 | 3 | 4 | 6 | 6 | 5 | 88 | 73 | 37 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 6 | W 6 | SW 12 | SW 12 | SW 14 | W 9 | N 3 | SW 14 | SW 13 | SW 13 | SW 9 | SW 13 | SSW 8 | — | W 12 | W 12 | WSW 7 | — | — |
| kJ | 7 | 7 | 1 | 1 | 6 | 6 | 8 | 2 | 1 | 8 | 7 | 7 | 3 | 7 | 7 | — | 3 | 3 | 18 | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 16 | SW 16 | W 10 | W 6 | W 9 | W 9 | — | — | — | — | — | — | — | SW 13 | — | — | — | SW 10 | SW 10 | — |
| kJ | — | 5 | 10 | 2 | 1 | 2 | 2 | — | — | — | — | — | — | — | 7 | — | — | — | 4 | 4 | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | N 4 | NNW 5 | NNW 5 | N 5 | — | NNW 4 | — | ESE 2 | — | ESE 4 | ESE 5 | ESE 4 | SSE 4 | SSW 4 | S 5 | SSW 6 | SE 4 | SE 3 | SSW 3 |
| kJ | 57 | 32 | 11 | 20 | 18 | 10 | — | 1 | — | 1 | — | 23 | 48 | 31 | 10 | 30 | 45 | 126 | 11 | 2 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 145 | 297 | 189 | 134 | 309 | 140 | 133 | 273 | 113 | 288 | 113 | 291 | 349 | 333 | 282 | 178 | 307 | 191 | 42 | 305 | 139 |
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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