Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 12 Jul 2026:
- Most powerful swell: Saturday 18 Jul, 1AM (local time) - 3ft (0.9m), 7s period, SW swell with 73 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 0.9m 7s and forecast to arrive on Saturday (Jul 18) 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 0.9m 6s period and expected on Saturday (Jul 18) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sat 18th Jul) | 3ft (0.9m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
Right then, let’s have a look at what’s on the cards for Whistling Sands (Porth Oer). I’ll be straight with you – it’s a tough run ahead. This spot is a sheltered beginner’s wave that’s inconsistent, and unfortunately, the next 16 days reflect that. We’ve got a big old gap of poor conditions to start with.
The water temperature is sitting at 60°, which is about 1° warmer than usual for this time of year – nothing too crazy, just a touch on the mild side.
Honestly, for the first week and a half, there’s next to nothing. From Sunday the 12th right through to the afternoon of Wednesday the 22nd, the data shows "poor surf conditions" with scores of zero. We’re talking flat spells, tiny wind swell, and messy winds. The combined energy of all swells is basically a whisper, often in the single digits (3, 29, 33). It’s a long, quiet period.
Now, we finally get a glimmer on Wednesday the 22nd. The afternoon session isn’t a standout, but it’s the only thing on the board. We’ve got a 6ft swell coming from the WSW with a period of 7 seconds and the combined energy hitting 282 – that’s moderate energy. The wind swings to a cross-off from the SSW at 9 mph, which will clean the faces up. The report even says “surfable waves but very ordinary conditions” – it’s not going to be pretty, but there’ll be something to push you around. That’s it though. Thursday the 23rd and beyond drop right back off into tiny, weak, and choppy junk with the energy numbers dropping hard (9, 107, 70...).
So, the one and only time to even think about getting wet is Wednesday afternoon, the 22nd of July. Don’t expect perfection, but if you’re desperate, that’s your window.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 16°C on Sun night). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the NNE by Mon afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 25°C on Wed night, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 | N 4 | N 5 | NNE 3 | N 4 | NNE 4 | NNE 5 | N 5 | SW 14 | N 4 | NNE 3 | SSW 6 | SW 14 | SW 8 | SW 7 | SSW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 3 | 0 | 2 | 14 | 23 | 12 | 17 | 7 | 0 | 2 | 4 | 8 | 3 | 14 | 19 | 25 | 73 | 52 | 16 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross | cross-off | cross | cross-on | cross-off | cross-off | on | cross-on | cross-on | cross-on | cross-off | glassy | on | cross-on |
High Tide | 7:19PM3.69m | 7:48AM3.73m | 8:13PM3.98m | 8:41AM3.88m | 9:03PM4.23m | 9:31AM3.97m | 9:51PM4.40m | 10:19AM3.97m | 10:38PM4.46m | 11:05AM3.88m | 11:24PM4.39m | 11:50AM3.73m | 00:09AM4.20m | ||||||||
Low Tide | 1:58PM0.68m | 2:30AM0.51m | 2:55PM0.48m | 3:26AM0.22m | 3:45PM0.31m | 4:17AM-0.00m | 4:32PM0.20m | 5:05AM-0.11m | 5:16PM0.18m | 5:51AM-0.10m | 5:59PM0.24m | 6:35AM0.04m | 6:41PM0.39m | ||||||||
 | |  | | | | | | | |  |  |  |  |  | | | | | | | |
 | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — |
 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:32 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — |
Temp °C | 23 | 28 | 24 | 20 | 23 | 24 | 23 | 26 | 25 | 22 | 24 | 25 | 22 | 21 | 19 | 20 | 21 | 20 | 18 | 20 | 19 |
Feels °C | 21 | 24 | 19 | 16 | 17 | 19 | 21 | 21 | 19 | 22 | 20 | 22 | 22 | 20 | 20 | 19 | 19 | 17 | 17 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | NNW 4 | N 5 | N 5 | ESE 3 | W 19 | SW 15 | — | SW 18 | N 5 | N 4 | N 4 | ESE 3 | N 5 | N 5 | SW 7 | SSW 7 | SW 7 | SW 13 | SW 6 | SW 6 | SW 5 |
| kJ | 3 | 1 | 8 | 1 | 7 | 8 | — | 12 | 18 | 2 | 1 | 4 | 2 | 2 | 14 | 19 | 25 | 6 | 52 | 16 | 5 |
Swell 2 Height (m) Direction Period (s) | E 3 | — | — | SE 4 | SW 15 | W 15 | SW 18 | W 14 | SW 14 | ESE 3 | N 5 | N 5 | SSW 6 | SW 6 | — | SW 12 | SW 12 | — | SW 11 | NNW 4 | NNW 4 |
| kJ | 1 | — | — | 1 | 8 | 4 | 12 | 4 | 7 | 1 | 2 | 8 | 4 | 1 | — | 6 | 6 | — | 5 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | N 5 | — | — | N 6 | — | — | W 14 | — | S 7 | N 5 | E 3 | SSW 6 | SW 14 | SW 8 | SW 12 | — | — | — | — | SW 11 | SW 11 |
| kJ | 1 | — | — | 1 | — | — | 4 | — | 1 | 1 | 1 | 4 | 8 | 3 | 6 | — | — | — | — | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | N 4 | ESE 3 | NNE 3 | N 4 | NNE 4 | NNE 5 | N 5 | E 4 | ENE 3 | NNE 3 | — | ESE 2 | — | SSW 3 | S 4 | SW 4 | SW 7 | NW 3 | NW 4 | — |
| kJ | — | 3 | 4 | 2 | 14 | 23 | 7 | 17 | 13 | 1 | 2 | — | 1 | — | 1 | 6 | 7 | 73 | 3 | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 324 | 257 | 349 | 397 | 258 | 252 | 134 | 113 | 257 | 257 | 178 | 88 | 284 | 113 | 134 | 106 | 112 | 45 | 8 | 621 | 307 |
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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