Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 7 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 7AM (local time) - 2ft (0.6m), 6s period, SW swell with 34 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 0.6m 6s and forecast to arrive on Sunday (Aug 09) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Friday (Aug 07) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Sun 9th Aug) | 2ft (0.6m) 6s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: this outlook for Whistling Sands (Porth Oer) is a tough one. We’re looking at a 16-day window that starts with a whole lot of nothing. For the first week and a half, from August 7th right through to August 17th, it’s a real desert. The swell is tiny, the energy is basically non-existent, and the conditions are just flat-out poor for surfing. You’re looking at a long gap before anything even thinks about turning on.
The water temperature is about average for the time of year, which is fine, but it won’t matter much when you’re bobbing around on flat water.
The first real glimmer comes on Monday afternoon, August 18th. The swell bumps up to 5 ft from the SW with a period of 6 seconds. The combined energy hits 135 (moderate), and the wind is a clean cross-off, so the surface will be tidy. The waves are there, but they’re a bit short-period and ordinary. It’s surfable, but it’s not a classic.
Then, on Sunday, August 16th, we see a brief pulse of southwest swell. The morning brings 3 ft from the W (period 4 seconds) and the afternoon ramps up to 4 ft from the WSW (period 5 seconds), with cross-off winds keeping it clean. The energy is low, though, and the period is so short it’ll be a bit bumpy and weak. Not a standout, just a tease.
If you’re desperate, the Tuesday afternoon, August 18th session is the best on offer, but that’s not saying much. The Monday morning, August 17th has a bit more size at 4 ft from the NW (period 5 seconds) and a combined energy of 106 (moderate), but the wind is cross-shore, so it’ll be a bit crumbly.
For the second week, things stay pretty lean. Thursday, August 20th has some 4 ft swell from the WNW in the morning, but it’s choppy with a fresh cross-onshore. The afternoon cleans up with 4 ft from the SW and a cross-off breeze, but again, it’s just ordinary.
This break is *inconsistent* and *sheltered*, so this kind of blank run is more normal for the area. Don’t hold your breath. The best advice is to wait for a better forecast.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue morning, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 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) | SW 4 | SW 5 | SW 4 | SW 11 | SW 4 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 6 | SSW 6 | SSW 6 | WSW 10 | WSW 10 | SW 9 | SW 8 | SW 8 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 9 | 5 | 5 | 7 | 27 | 14 | 7 | 6 | 6 | 7 | 2 | 4 | 5 | 10 | 9 | 20 | 17 | 32 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross | cross-off | cross | glassy | cross | cross-on | cross-on | cross-off | off | cross-on | glassy | off | on | cross-off | cross | glassy | cross-off |
High Tide | 3:26PM3.07m | 4:04AM3.13m | 4:48PM3.08m | 5:29AM3.15m | 6:06PM3.28m | 6:42AM3.33m | 7:10PM3.62m | 7:42AM3.57m | 8:04PM3.98m | 8:33AM3.80m | 8:52PM4.29m | 9:19AM3.95m | 9:37PM4.49m | ||||||||
Low Tide | 9:50AM1.13m | 10:26PM1.23m | 11:20AM1.18m | 00:06AM1.13m | 12:46PM1.04m | 1:25AM0.83m | 1:53PM0.78m | 2:27AM0.46m | 2:46PM0.49m | 3:18AM0.13m | 3:32PM0.26m | 4:04AM-0.10m | 4:15PM0.11m | ||||||||
 | |  |  | | |  | |  | | | | | | | | | | | | | |
 | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 15 | 17 | 17 | 17 | 18 | 18 | 16 | 18 | 19 | 23 | 23 | 23 | 22 | 22 | 20 | 18 | 20 | 19 |
Feels °C | 14 | 11 | 12 | 12 | 14 | 15 | 18 | 19 | 18 | 15 | 14 | 14 | 20 | 22 | 21 | 21 | 18 | 17 | 19 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 4 | SW 5 | SW 4 | SW 11 | SW 8 | SW 7 | SW 12 | SW 6 | SW 6 | SW 6 | SW 6 | N 3 | SW 6 | SSW 6 | SSW 6 | WSW 10 | WSW 10 | SW 9 | SW 4 | SW 8 | SW 8 |
| kJ | 4 | 3 | 9 | 5 | 3 | 7 | 5 | 14 | 7 | 6 | 6 | 2 | 2 | 4 | 4 | 10 | 9 | 20 | 7 | 32 | 15 |
Swell 2 Height (m) Direction Period (s) | NNW 3 | — | SW 12 | SW 11 | — | SW 11 | — | SW 12 | S 10 | — | — | SW 7 | — | — | SW 12 | SW 6 | — | — | SW 8 | NNW 4 | — |
| kJ | 1 | — | 5 | 5 | — | 5 | — | 6 | 2 | — | — | 7 | — | — | 5 | 1 | — | — | 17 | 1 | — |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | — | W 9 | SW 11 | — | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — | — | — |
| kJ | 6 | 6 | — | 2 | 5 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | — | — | SSW 3 | SW 4 | SW 4 | SW 6 | — | — | NNW 3 | NNW 2 | ENE 3 | SE 3 | — | — | SE 3 | — | SW 4 | NNW 3 | — | — |
| kJ | 5 | — | — | 5 | 3 | 7 | 27 | — | — | 1 | 1 | 1 | 3 | — | — | 2 | — | 19 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 314 | 292 | 288 | 288 | 288 | 288 | 292 | 292 | 288 | 288 | 298 | 291 | 307 | 324 | 113 | 112 | 301 | 145 | 145 | 256 | 145 |
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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