Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 3 Jul 2026:
- Most powerful swell: Saturday 4 Jul, 7PM (local time) - 4.5ft (1.3m), 5s period, SW swell with 87 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 1.3m 5s and forecast to arrive on Saturday (Jul 04) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Jul 03) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sat 4th Jul) | 4.5ft (1.3m) 5s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. Let’s be honest, it’s a tough run ahead. Looking at the whole 16-day window for Porth Oer, there’s really nothing that’s going to get the heart racing. This is a sheltered spot, and for most of the stretch the swell just isn’t showing up with any sort of energy and the winds are mostly making a mess of things or blowing straight onshore. The first real surfable day isn’t until Friday the 4th of July, and even then it’s a massive letdown. We’re looking at a classic dry spell for this area.
The Outlook
Right through the early days, it’s bleak. Friday the 3rd of July has tiny ankle-slappers with a cross-off breeze, but the swell is far too weak to even bother with. The weekend of the 4th and 5th sees a little bump in size, with Saturday morning having waves around 3 ft from the SW and moderate wave energy (68). But the wind is a fresh cross-shore, so it’s going to be lumpy and messy. Sunday is even smaller. The best you can say is Monday the 7th morning has a period of no wind and a little 1 ft wave, but it’s basically flat. Don’t even look at the middle of the month – from the 8th to the 12th of July it’s a solid stretch of near-zero surf, mostly blown out by northing winds. There's a morning on the 13th of July that goes glassy again, but again, the wave is just 2 ft and weak – you’d be scratching for any ride.
The end of the forecast period isn't much better. A morning on the 16th of July has a 1 ft SW swell, but the wind is a strong breeze at 25 mph from the south. That’s just howling. Even the final day, the 18th, shows a 4 ft wave from the north, but it’s accompanied by a fresh cross-off wind. That’s clean, sure, but it’s a short period windswell (5 seconds) and the energy is still just moderate (62). For a spot that needs a good SW groundswell to work, this isn't it.
Forget about finding a standout here. There isn’t one. The swell quality is consistently poor. This whole run is one to skip. Get the gear ready for another day.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 21°C on Sat afternoon, min 14°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the SW by Sat morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sun night, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
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 6 | SW 11 | SW 5 | SW 6 | SW 5 | WSW 5 | SW 6 | SW 5 | SW 4 | SW 5 | SW 4 | SW 5 | SW 4 | W 12 | SW 12 | — | — | S 11 | SW 11 | S 12 | — |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 5 | 60 | 64 | 74 | 44 | 15 | 8 | 18 | 15 | 13 | 10 | 3 | 3 | 6 | 0 | 0 | 2 | 5 | 3 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross | cross-off | glassy | on | cross-off | cross-on | cross-on | cross-on | cross | on | cross-on | cross-on |
High Tide | 11:07AM3.41m | 11:25PM3.81m | 11:43AM3.36m | 00:01AM3.77m | 12:22PM3.31m | 00:41AM3.69m | 1:05PM3.23m | 1:25AM3.58m | 1:55PM3.16m | 2:17AM3.46m | 2:55PM3.10m | 3:20AM3.35m | 4:03PM3.10m | ||||||||
Low Tide | 5:55AM0.57m | 5:58PM0.68m | 6:33AM0.62m | 6:34PM0.76m | 7:11AM0.68m | 7:11PM0.86m | 7:50AM0.76m | 7:52PM0.98m | 8:34AM0.84m | 8:38PM1.09m | 9:24AM0.92m | 9:36PM1.17m | 10:25AM0.97m | 10:48PM1.17m | |||||||
 | |  |  | | | | |  | | | |  | | | | |  | |  |  | |
 | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — |
 | — | — | 9:45 | — | — | 9:45 | — | — | 9:45 | — | — | 9:44 | — | — | 9:44 | — | — | 9:43 | — | — | 9:42 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 |
Temp °C | 15 | 17 | 19 | 19 | 21 | 20 | 18 | 21 | 21 | 19 | 21 | 21 | 17 | 19 | 20 | 19 | 21 | 21 | 19 | 20 | 21 |
Feels °C | 12 | 12 | 17 | 13 | 16 | 17 | 16 | 17 | 19 | 16 | 18 | 21 | 17 | 18 | 20 | 17 | 18 | 18 | 18 | 17 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 6 | — | W 11 | NW 4 | — | W 10 | SW 6 | NNW 4 | — | SW 5 | NW 4 | SW 5 | SW 4 | NNW 4 | — | — | — | S 11 | SW 11 | S 12 | — |
| kJ | 11 | — | 2 | 2 | — | 2 | 15 | 1 | — | 14 | 1 | 10 | 3 | 1 | — | — | — | 2 | 5 | 3 | — |
Swell 2 Height (m) Direction Period (s) | NNW 4 | SW 11 | — | W 11 | — | W 10 | NW 4 | — | — | — | — | — | — | SW 4 | SW 4 | — | — | — | — | — | — |
| kJ | 1 | 5 | — | 2 | — | 2 | 6 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 11 | — | — | — | — | — | — | — | — | — | W 8 | — | — | W 12 | SW 12 | — | — | — | — | — | — |
| kJ | 5 | — | — | — | — | — | — | — | — | — | 1 | — | — | 3 | 6 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 4 | SW 5 | SW 6 | SW 5 | WSW 5 | — | SW 5 | SW 4 | WSW 5 | SW 4 | — | NW 4 | — | — | — | — | — | — | — | — |
| kJ | — | 18 | 60 | 64 | 74 | 44 | — | 8 | 18 | 15 | 13 | — | 2 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 241 | 288 | 284 | 145 | 498 | 256 | 150 | 256 | 228 | 296 | 308 | 292 | 306 | 308 | 252 | 252 | 302 | 193 | 204 | 228 | 204 |
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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