
Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 9 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 4PM (local time) - 3.5ft (1.1m), 5s period, N swell with 55 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 1.1m 5s and forecast to arrive on Saturday (Aug 15) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 12) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 15th Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it. I’ve looked at what’s coming up for Whistling Sands (Porth Oer), and I’ve got to be honest with you – it’s a tough one. This spot is a sheltered, beginner-friendly nook, but it’s inconsistent, and for the next 16 days, the surf fairy is basically on holiday. There’s a big old gap of nothing worthwhile right from the start, with no real recommendations until the back half of the month.
The first few days are a write-off. Sunday the 9th through to the middle of the week is just poor surf – tiny, weak swell. On the 11th, we get a morning of clean, offshore winds from the SE, but the swell is a measly 0.7 ft from the SSW with a poor period of 6 seconds. The combined energy is just a whisper (4). It’s flat, mate. The water temp is about average for the time of year, so no shock there.
We drift through a long stretch of nothing. The wind is mostly cross-onshore, chopping up what little bump there is. By the 14th and 15th, the swell height ticks up slightly to 3 ft–4 ft, but it’s short-period windswell from the N with a period of only 4–5 seconds, and the wind is a fresh, lumpy cross-onshore. The energy is still weak, topping out at 57. This is more of a kite-surfing breeze than a paddle-surfing wave.
Now, the only real glimmer comes on the 16th of August. Sunday morning looks like a moment of peace. The wind turns glassy – dead calm, a slight air from the SE. The swell is a tiny 2 ft from the N, but with that glassy surface, it’ll be clean. It’s still a short-period, weak wave (energy of 18), so it’s not going to be a barrel, but for a beginner or a longboarder looking to get wet in clean conditions, this is the best on offer. Crowds are sometimes an issue here, so expect a few other hopefuls.
After that, it’s back to the doldrums. The 22nd sees a clean morning with a light offshore breeze from the ENE and a 2 ft SW swell (energy 50), but the period is a short 6 seconds. The 23rd has the biggest swell of the run at 4 ft from the SW, but it’s cross-onshore and choppy. It’s just not coming together. The long-range stuff on the 24th is a tease – a 14-second period swell but barely 0.3 ft of height and a fresh cross-onshore wind. It’s a no-go.
So, the honest truth? There’s no standout swell here. If you’re desperate, the 16th morning is your best bet for a glassy paddle. Otherwise, keep the board in the car and wait for a better forecast. This area tends to have these blank runs, so don’t lose hope.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue morning, min 14°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed night, min 16°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the N by Fri afternoon). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 12 | SW 4 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | WSW 10 | WSW 10 | SW 9 | SW 8 | SW 8 | SW 7 | N 4 | N 4 | N 3 | N 5 | N 5 | N 4 |
Wave Graph | |||||||||||||||||||||
7 | 6 | 13 | 11 | 5 | 6 | 4 | 4 | 5 | 10 | 9 | 21 | 17 | 15 | 8 | 16 | 21 | 5 | 41 | 55 | 17 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-on | cross-on | cross-off | off | cross-on | off | off | on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 10:02AM4.03m | 10:19PM4.55m | 10:42AM4.01m | 11:00PM4.46m | |||||||
Low Tide | 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 | 4:46AM-0.19m | 4:54PM0.07m | 5:26AM-0.15m | 5:32PM0.14m | ||||||||
5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | |
— | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 14 | 16 | 17 | 21 | 21 | 21 | 23 | 25 | 26 | 22 | 23 | 22 | 16 | 20 | 18 | 17 | 20 | 19 |
Feels °C | 14 | 13 | 13 | 12 | 12 | 14 | 20 | 19 | 21 | 21 | 21 | 24 | 19 | 20 | 20 | 11 | 15 | 12 | 14 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 12 | SW 4 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | WSW 10 | WSW 10 | SW 9 | SW 8 | SW 8 | SW 7 | WSW 6 | WSW 6 | WSW 7 | SW 6 | SW 7 | SW 7 |
7 | 6 | 13 | 11 | 5 | 6 | 4 | 4 | 4 | 10 | 9 | 21 | 17 | 15 | 8 | 4 | 3 | 4 | 2 | 2 | 2 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | — | S 10 | — | — | — | — | SSE 3 | SW 11 | SW 6 | SW 6 | — | — | WSW 9 | W 9 | — | SW 8 | — | — | — | — |
5 | — | 2 | — | — | — | — | 1 | 5 | 1 | 1 | — | — | 9 | 2 | — | 2 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | W 12 | — | — | — | — | — | — | — | — | SW 12 | — | — | — | — | — | — | — | — | — | — | — |
3 | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 3 | NNW 3 | NNW 4 | NNW 4 | NNE 3 | SE 3 | — | — | SE 3 | — | — | — | — | N 3 | N 4 | N 4 | N 3 | N 5 | N 5 | N 4 |
2 | 3 | 5 | 6 | 5 | 2 | 1 | — | — | 2 | — | — | — | — | 2 | 16 | 21 | 5 | 41 | 55 | 17 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 337 | 498 | 316 | 292 | 298 | 257 | 307 | 314 | 113 | 106 | 113 | 106 | 132 | 299 | 132 | 145 | 308 | 141 | 252 | 321 | 193 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











