Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 18 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 7PM (local time) - 4.5ft (1.4m), 6s period, N swell with 132 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 1.4m 6s and forecast to arrive on Wednesday (Jul 22) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Jul 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 22nd Jul) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – if you’re lookin’ for waves at Whistling Sands (Porth Oer) over the next sixteen days, you’re gonna be disappointed. This is a tough one. The whole forecast window, from Friday 17th July right through to Saturday 1st August, is a total write‑off for surf. Every single session shows poor surf conditions, with nothing but cross‑onshore chop, tiny windswell, or flat spells. The water’s warm – about 61°F – a degree above normal for this time of year, but that’s the only bit of good news.
The break itself is a sheltered, inconsistent beginner spot, and that’s part of the problem. It rarely gets proper swell, and when it does, the wind’s never in the right place. The first few days are just hopeless: on Friday 17th there’s a puny 2 ft of 4‑second windswell from the north, with a stiff 16 mph cross‑onshore. That’s not surf, that’s whitecaps. Saturday 18th is even worse – 4 ft but with a fresh 22 mph cross‑onshore, lumpy as hell. The combined energy hits 101 on Saturday afternoon, but it’s just messy energy – no shape, no hope.
There’s a brief moment on Friday 24th July when the wind goes glassy, but the swell is only 0.3 ft – a flat calm, not a wave. Then on Monday 27th July, we get a 5 ft swell from the west‑southwest, period 5 seconds, combined energy 112 – that’s a moderate pulse. But the wind is onshore (NW 9 mph) and the conditions are still ranked poor. For a beginner spot like this, 5 ft is already pushing it, and with onshore wind it’s just a choppy mess. Not worth paddling out.
The rest of the window is more of the same: tiny swell, cross‑onshore winds, and occasional glassy moments but with zero height. The last few days into early August offer nothing. If you’re after a surf, you’re better off finding a different coastline. This is a proper flat spell – don’t hold your breath. The forecasts can always change, but right now it’s a blank run. For a spot that’s already inconsistent, this kind of stretch is pretty normal.
Stay hopeful, but stay dry.
Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Fri night, min 13°C on Fri night). Winds decreasing (fresh winds from the NNW on Sat afternoon, light winds from the NNE by Sat night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Tue afternoon, min 12°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 4 | NNW 5 | N 5 | NNW 4 | NNW 3 | N 4 | N 5 | N 5 | N 4 | N 5 | N 5 | N 4 | N 6 | N 6 | N 6 | N 6 | N 5 | N 5 | SW 13 | SW 13 | SW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 102 | 22 | 5 | 3 | 10 | 33 | 59 | 23 | 34 | 53 | 35 | 88 | 127 | 0 | 40 | 20 | 7 | 7 | 7 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | glassy |
High Tide | 11:50AM3.73m | 00:09AM4.20m | 12:36PM3.54m | 00:55AM3.91m | 1:23PM3.32m | 1:44AM3.57m | 2:14PM3.10m | 2:38AM3.23m | 3:13PM2.92m | 3:43AM2.96m | 4:24PM2.82m | 4:58AM2.82m | 5:36PM2.84m | ||||||||
Low Tide | 6:35AM0.04m | 6:41PM0.39m | 7:19AM0.27m | 7:23PM0.61m | 8:02AM0.55m | 8:07PM0.85m | 8:45AM0.85m | 8:54PM1.09m | 9:33AM1.12m | 9:52PM1.30m | 10:33AM1.32m | 11:08PM1.41m | 11:50AM1.39m | 00:34AM1.37m | |||||||
 | |  |  | |  | | | | | | | | | | | | | | |  | |
 | 5:15 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — |
 | — | — | 9:32 | — | — | 9:31 | — | — | 9:30 | — | — | 9:29 | — | — | 9:28 | — | — | 9:27 | — | — | 9:24 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 |
Temp °C | 13 | 16 | 18 | 15 | 16 | 17 | 13 | 16 | 17 | 15 | 18 | 16 | 14 | 16 | 15 | 14 | 16 | 17 | 16 | 18 | 18 |
Feels °C | 8 | 11 | 15 | 13 | 12 | 11 | 9 | 11 | 13 | 11 | 14 | 12 | 9 | 11 | 11 | 11 | 13 | 15 | 15 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 5 | SW 11 | SW 11 | S 10 | — | — | — | — | W 7 | — | — | — | — | — | W 14 | W 14 | — | N 4 | — | SW 4 |
| kJ | 1 | 1 | 5 | 5 | 2 | — | — | — | — | 1 | — | — | — | — | — | 4 | 4 | — | 2 | — | 3 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 13 | — |
| kJ | 5 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | N 5 | NNW 4 | NNW 3 | N 4 | N 5 | N 5 | N 4 | N 5 | N 5 | N 4 | N 6 | N 6 | N 6 | N 6 | N 5 | N 5 | — | — | — |
| kJ | 16 | 102 | 22 | 3 | 3 | 10 | 33 | 59 | 23 | 34 | 53 | 35 | 88 | 127 | 74 | 40 | 20 | 7 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 325 | 325 | 218 | 321 | 308 | 310 | 325 | 311 | 310 | 256 | 308 | 85 | 85 | 85 | 85 | 218 | 329 | 310 | 292 | 281 | 292 |
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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