Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 28 Jul 2026:
- Best quality surf: Monday 3 Aug, 4PM (local time) - 3.5ft (1.0m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 4 Aug, 1AM (local time) - 5.5ft (1.7m), 7s period, SW swell with 261 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 4PM (local time) - 3.5ft (1.0m), 8s 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 Monday (Aug 03) at 4PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 1.7m 7s and forecast to arrive on Tuesday (Aug 04) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Wednesday (Jul 29) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Mon 3rd Aug) | 3.5ft (1.0m) 8s |
| Best Surf | 4PM (Mon 3rd Aug) | 3.5ft (1.0m) 8s |
| Most Powerful | 1AM (Tue 4th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, Rusty here, let’s have a look at what’s cookin’ for Whistling Sands (Porth Oer).
Honestly, it’s a tough stretch ahead. For the next week and a half, we’re looking at a whole lot of nothing special. The swell is just tiny, the wind is mostly messy, and the energy is weak. There’s a real gap here – from now until Monday the 3rd of August, it’s all poor surf conditions with hardly any rideable waves. You’ll be staring at flat, clean water more than anything surfable.
The water temp is sitting at 61°F, which is pretty much bang on average for the time of year, so no need for a thicker suit just yet.
Now, finally, on Monday the 3rd of August in the afternoon, we get a flicker of life. The swell bumps up to 3ft from the SSW, with a period of 8 seconds, and the combined energy jumps to a moderate 154. The wind is a light cross-off, so it’ll be clean. The comment says “surfable waves but very ordinary conditions,” and I’d agree – it’s not a standout, but it’s the only real window we get. This spot is sheltered and inconsistent, so a session like this is a rare little treat. It’s a beginner spot, so that 3ft is perfect for a learner.
After that, things get messy again. Tuesday the 4th has a bit more size (4ft, 187 energy) but the wind is cross-shore with a chop, making it a write-off. By the 11th of August, we see a 5ft swell from the north, but it’s onshore wind and a short period, so it’s lumpy and not for the faint-hearted.
If you’re looking for the best of a bad bunch, that Monday the 3rd of August afternoon is your one and only shot. It’s clean, small, and beginner-friendly. Don’t expect much else.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Wed morning, min 13°C on Thu morning). Winds decreasing (fresh winds from the SSW on Tue morning, calm by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun night, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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 5 | SW 5 | SW 5 | SW 4 | SW 4 | SW 5 | W 4 | NW 4 | SW 5 | SW 5 | SW 3 | WSW 5 | SW 5 | SW 5 | WSW 4 | SW 8 | W 11 | WSW 9 | WSW 8 | SSW 8 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 71 | 55 | 33 | 0 | 10 | 22 | 26 | 12 | 8 | 5 | 7 | 35 | 6 | 3 | 3 | 3 | 3 | 8 | 27 | 128 | 261 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | on | on | cross-off | off | cross | cross-off | on | cross-on | cross-off | glassy | cross-off | cross-on | off | off | cross-off | cross-off |
High Tide | 8:49PM3.59m | 9:07AM3.41m | 9:24PM3.79m | 9:40AM3.52m | 9:56PM3.95m | 10:12AM3.60m | 10:28PM4.05m | 10:45AM3.65m | 11:01PM4.09m | 11:19AM3.67m | 11:35PM4.06m | 11:55AM3.63m | 00:13AM3.95m | ||||||||
Low Tide | 3:19PM0.77m | 3:46AM0.61m | 3:53PM0.60m | 4:21AM0.46m | 4:26PM0.49m | 4:56AM0.36m | 5:00PM0.43m | 5:30AM0.33m | 5:33PM0.45m | 6:04AM0.36m | 6:06PM0.52m | 6:38AM0.44m | 6:40PM0.64m | ||||||||
 |  |  | | |  |  | | | | | | | | | | | | | | | |
 | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — |
 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 | — | — | 9:10 | — | — | 9:08 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 18 | 18 | 17 | 13 | 15 | 16 | 14 | 15 | 17 | 13 | 15 | 15 | 17 | 20 | 22 | 19 | 19 | 18 |
Feels °C | 14 | 13 | 14 | 15 | 14 | 16 | 8 | 12 | 13 | 12 | 10 | 12 | 10 | 13 | 12 | 15 | 16 | 20 | 16 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | SW 5 | — | NW 4 | SW 5 | NW 4 | NNW 4 | WSW 5 | SW 5 | NW 4 | WSW 4 | — | SW 8 | N 3 | WSW 8 | WSW 8 | — |
| kJ | — | — | — | — | — | 22 | — | 10 | 8 | 5 | 1 | 35 | 6 | 4 | 1 | — | 3 | 2 | 27 | 26 | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 4 | — | SW 5 | — | W 11 | W 9 | SW 5 | SW 8 | SW 8 | — | WSW 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | 12 | — | 5 | — | 2 | 2 | 3 | 3 | 3 | — | 8 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 9 | — | — | W 11 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | SW 5 | SW 4 | SW 4 | — | W 4 | SW 4 | NW 4 | — | SW 3 | — | NW 4 | — | — | — | — | — | SE 3 | SSW 8 | SW 7 |
| kJ | 71 | 55 | 33 | 14 | 10 | — | 26 | 10 | 2 | — | 7 | — | 5 | — | — | — | — | — | 2 | 128 | 261 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 258 | 282 | 256 | 292 | 288 | 288 | 629 | 537 | 302 | 306 | 538 | 538 | 307 | 318 | 193 | 288 | 252 | 113 | 139 | 77 | 61 |
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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